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class="sidebar-sub-header level2"><a href="/blog/pages/055ecee9a4325386/#具名插槽" class="sidebar-link">具名插槽</a></li><li class="sidebar-sub-header level2"><a href="/blog/pages/055ecee9a4325386/#作用域插槽" class="sidebar-link">作用域插槽</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header level4"><a href="/blog/pages/055ecee9a4325386/#作用" class="sidebar-link">作用：</a></li></ul></li><li class="sidebar-sub-header level2"><a href="/blog/pages/055ecee9a4325386/#具名插槽的缩写" class="sidebar-link">具名插槽的缩写</a></li><li class="sidebar-sub-header level2"><a href="/blog/pages/055ecee9a4325386/#demo" class="sidebar-link">Demo</a></li></ul></li><li><a href="/blog/pages/636ca33122e9a64b/" class="sidebar-link">动态组件与 v-once 指令</a></li><li><a href="/blog/pages/e6cec47efa42d7f1/" class="sidebar-link">vue父子组件的生命周期顺序</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>过渡&amp;动画</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>可复用性&amp;组合</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>工具</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>规模化</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Vuex</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>其他</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <div><main class="page"><div class="theme-vdoing-wrapper "><div class="articleInfo-wrap" data-v-06970110><div class="articleInfo" data-v-06970110><ul class="breadcrumbs" data-v-06970110><li data-v-06970110><a href="/blog/" title="首页" class="iconfont icon-home router-link-active" data-v-06970110></a></li> <li data-v-06970110><a href="/blog/note/vue/#《Vue》笔记" data-v-06970110>《Vue》笔记</a></li><li data-v-06970110><a href="/blog/note/vue/#组件" data-v-06970110>组件</a></li></ul> <div class="info" data-v-06970110><div title="作者" class="author iconfont icon-touxiang" data-v-06970110><a href="https://github.com/heBody" target="_blank" title="作者" class="beLink" data-v-06970110>heBody</a></div> <div title="创建时间" class="date iconfont icon-riqi" data-v-06970110><a href="javascript:;" data-v-06970110>2020-02-16</a></div> <!----></div></div></div> <!----> <div class="content-wrapper"><div class="right-menu-wrapper"><div class="right-menu-margin"><div class="right-menu-title">目录</div> <div class="right-menu-content"></div></div></div> <h1><img src="data:image/png;base64,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">插槽slot<!----></h1>  <div class="theme-vdoing-content content__default"><h1 id="插槽slot"><a href="#插槽slot" class="header-anchor">#</a> 插槽slot</h1> <p><a href="https://cn.vuejs.org/v2/guide/components-slots.html" target="_blank" rel="noopener noreferrer">API<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <h2 id="插槽"><a href="#插槽" class="header-anchor">#</a> 插槽</h2> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>root<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>child</span><span class="token punctuation">&gt;</span></span> <span class="token comment">&lt;!-- 组件标签 --&gt;</span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>h1</span><span class="token punctuation">&gt;</span></span>hello<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>h1</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>child</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>text/javascript<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span><span class="token script"><span class="token language-javascript">
    Vue<span class="token punctuation">.</span><span class="token function">component</span><span class="token punctuation">(</span><span class="token string">'child'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span> <span class="token comment">// 子组件</span>
        <span class="token literal-property property">template</span><span class="token operator">:</span> <span class="token string">'&lt;div&gt;&lt;slot&gt;&lt;/slot&gt;&lt;/div&gt;'</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>

    <span class="token keyword">var</span> vm <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
        <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#root'</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br></div></div><p>上面代码中，组件标签内的<code>h1</code>是要插入子组件内部的元素，子组件内使用<code>slot</code>标签接收父组件插入的<code>h1</code>标签。</p> <h4 id="默认值"><a href="#默认值" class="header-anchor">#</a> 默认值</h4> <div class="language-js line-numbers-mode"><pre class="language-js"><code>Vue<span class="token punctuation">.</span><span class="token function">component</span><span class="token punctuation">(</span><span class="token string">'child'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
    <span class="token literal-property property">template</span><span class="token operator">:</span> <span class="token string">'&lt;div&gt;&lt;slot&gt;默认值&lt;/slot&gt;&lt;/div&gt;'</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><p>子组件<code>slot</code>标签内可以添加默认值，它只会在父组件没有传入内容的时候被渲染。</p> <h2 id="具名插槽"><a href="#具名插槽" class="header-anchor">#</a> 具名插槽</h2> <div class="custom-block warning"><p class="custom-block-title">注意</p> <p>自 2.6.0 起有所更新。使用 <code>slot</code> attribute 的语法已废弃。</p></div> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>root<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>child</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">slot</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>header<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>header<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span> <span class="token comment">&lt;!--旧语法 使用template标签或其他标签都可以--&gt;</span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">slot</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>footer<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>footer<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>child</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>text/javascript<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span><span class="token script"><span class="token language-javascript">
    Vue<span class="token punctuation">.</span><span class="token function">component</span><span class="token punctuation">(</span><span class="token string">'child'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
        <span class="token literal-property property">template</span><span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token string">&lt;div&gt;
                        &lt;slot name=&quot;header&quot;&gt;&lt;/slot&gt;
                        &lt;div&gt;content&lt;/div&gt;
                        &lt;slot name=&quot;footer&quot;&gt;&lt;/slot&gt;
                    &lt;/div&gt;</span><span class="token template-punctuation string">`</span></span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>

    <span class="token keyword">var</span> vm <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
        <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#root'</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br></div></div><p>上面代码中，组件标签内有两个元素，分别添加了<code>slot</code>属性赋予不同的值，子组件内分别有两个<code>slot</code>插槽，添加了对应的<code>name</code>属性，用于分别接收父组件传入的内容。</p> <div class="custom-block tip"><p class="custom-block-title">提示</p> <p>自 2.6.0 起，使用<code>v-slot</code>指令代替<code>slot</code> attribute 的语法。</p></div> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>root<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>child</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>template</span> <span class="token attr-name"><span class="token namespace">v-slot:</span>header</span><span class="token punctuation">&gt;</span></span> <span class="token comment">&lt;!--新语法 只能使用template标签--&gt;</span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>h1</span><span class="token punctuation">&gt;</span></span>标题<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>h1</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>template</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>p</span><span class="token punctuation">&gt;</span></span>内容<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>p</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>template</span> <span class="token attr-name"><span class="token namespace">v-slot:</span>footer</span><span class="token punctuation">&gt;</span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>p</span><span class="token punctuation">&gt;</span></span>页脚<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>p</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>template</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>child</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>text/javascript<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span><span class="token script"><span class="token language-javascript">
	Vue<span class="token punctuation">.</span><span class="token function">component</span><span class="token punctuation">(</span><span class="token string">'child'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
		<span class="token literal-property property">template</span><span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token string">&lt;div&gt;
						&lt;header&gt;
						   &lt;slot name=&quot;header&quot;&gt;&lt;/slot&gt;
						&lt;/header&gt;
						&lt;main&gt;
						  &lt;slot&gt;&lt;/slot&gt;
						&lt;/main&gt;
						&lt;footer&gt;
						  &lt;slot name=&quot;footer&quot;&gt;&lt;/slot&gt;
						&lt;/footer&gt;
					&lt;/div&gt;</span><span class="token template-punctuation string">`</span></span>
	<span class="token punctuation">}</span><span class="token punctuation">)</span>

    <span class="token keyword">var</span> vm <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
        <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#root'</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br></div></div><p>自2.6.0版本起，具名插槽由原来的<code>slot</code>标签属性改为<code>v-slot</code>指令，例<code>v-slot:header</code>。子组件内仍然是在<code>slot</code>插槽标签添加<code>name</code>属性用于分别接收内容。未具名的插槽接收未使用<code>v-slot</code>指定的内容。</p> <p>另外，<strong>具名插槽同样可以使用默认值</strong>。</p> <p>注意 <strong><code>v-slot</code> 只能添加在 <code>&lt;template</code> 上</strong> (只有<a href="https://cn.vuejs.org/v2/guide/components-slots.html#%E7%8B%AC%E5%8D%A0%E9%BB%98%E8%AE%A4%E6%8F%92%E6%A7%BD%E7%9A%84%E7%BC%A9%E5%86%99%E8%AF%AD%E6%B3%95" target="_blank" rel="noopener noreferrer">一种例外情况<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>)，这一点和已经废弃的 <a href="https://cn.vuejs.org/v2/guide/components-slots.html#%E5%BA%9F%E5%BC%83%E4%BA%86%E7%9A%84%E8%AF%AD%E6%B3%95" target="_blank" rel="noopener noreferrer"><code>slot</code>attribute<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>不同。</p> <h2 id="作用域插槽"><a href="#作用域插槽" class="header-anchor">#</a> 作用域插槽</h2> <div class="custom-block warning"><p class="custom-block-title">注意</p> <p>自 2.6.0 起有所更新。使用 <code>slot-scope</code> attribute 的语法已废弃。</p></div> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>root<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>child</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>template</span> <span class="token attr-name">slot-scope</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>dataObj<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span> <span class="token comment">&lt;!--可使用其他标签，但注意其他标签将会被带到插槽里面--&gt;</span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>li</span><span class="token punctuation">&gt;</span></span>{{dataObj.dataItem}}<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>li</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>template</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>child</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>text/javascript<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span><span class="token script"><span class="token language-javascript">
	Vue<span class="token punctuation">.</span><span class="token function">component</span><span class="token punctuation">(</span><span class="token string">'child'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
        <span class="token function">data</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            <span class="token keyword">return</span> <span class="token punctuation">{</span>
                <span class="token literal-property property">list</span><span class="token operator">:</span> <span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">]</span>
            <span class="token punctuation">}</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>
        <span class="token literal-property property">template</span><span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token string">&lt;div&gt;
						&lt;ul&gt;
							&lt;slot
								v-for=&quot;item of list&quot;
								:dataItem=item
							&gt;
							&lt;/slot&gt;
						&lt;/ul&gt;
					  &lt;/div&gt;</span><span class="token template-punctuation string">`</span></span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>

    <span class="token keyword">var</span> vm <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
        <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#root'</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br></div></div><p>上面代码中，组件标签内需要使用<code>template</code>标签并且设置<code>slot-scope</code>属性 用于接收子组件内传递的值，<code>template</code>标签内的<code>li</code>标签是传入插槽的元素，<code>dataObj.dataItem</code>数据由子组件内提供。子组件内通过<code>v-for</code>循环插入父组件提供的<code>li</code>标签，并且通过<code>:dataItem=item</code>把每个<code>item</code>数据传递出去。</p> <blockquote><p>子组件提供数据，父组件中接收数据，可以对数据处理并插入到元素，然后把元素放入子组件插槽。</p></blockquote> <h4 id="作用"><a href="#作用" class="header-anchor">#</a> 作用：</h4> <p>数据由子组件提供，但渲染什么元素由父组件决定，并且可以对数据做二次处理。</p> <div class="custom-block tip"><p class="custom-block-title">提示</p> <p>自 2.6.0 起。使用<code>v-slot</code>代替 <code>slot-scope</code> attribute 的语法。</p></div> <p>为了让 <code>user</code> 在父级的插槽内容中可用，我们可以将 <code>user</code> 作为 <code>&lt;slot&gt;</code> 元素的一个 attribute 绑定上去：</p> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>span</span><span class="token punctuation">&gt;</span></span>
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>slot</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>user</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>user<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    {{ user.lastName }}
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>slot</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>span</span><span class="token punctuation">&gt;</span></span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><p>绑定在 <code>&lt;slot&gt;</code> 元素上的 attribute 被称为<strong>插槽 prop</strong>。现在在父级作用域中，我们可以使用带值的 <code>v-slot</code> 来定义我们提供的插槽 prop 的名字：</p> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>current-user</span><span class="token punctuation">&gt;</span></span>
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>template</span> <span class="token attr-name"><span class="token namespace">v-slot:</span>default</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>slotProps<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    {{ slotProps.user.firstName }}
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>template</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>current-user</span><span class="token punctuation">&gt;</span></span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><p>在这个例子中，我们选择将包含所有插槽 prop 的对象命名为 <code>slotProps</code>，但你也可以使用任意你喜欢的名字。</p> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>root<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>child</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>template</span> <span class="token attr-name"><span class="token namespace">v-slot:</span>default</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>dataObj<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span> <span class="token comment">&lt;!--default是默认具名，可省略。但有多个插槽时不能省略。--&gt;</span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>li</span><span class="token punctuation">&gt;</span></span>{{dataObj.dataItem}}<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>li</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>template</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>child</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>text/javascript<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span><span class="token script"><span class="token language-javascript">
	Vue<span class="token punctuation">.</span><span class="token function">component</span><span class="token punctuation">(</span><span class="token string">'child'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
        <span class="token function">data</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            <span class="token keyword">return</span> <span class="token punctuation">{</span>
                <span class="token literal-property property">list</span><span class="token operator">:</span> <span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">]</span>
            <span class="token punctuation">}</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>
        <span class="token literal-property property">template</span><span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token string">&lt;div&gt;
						&lt;ul&gt;
							&lt;slot
								v-for=&quot;item of list&quot;
								:dataItem=item
							&gt;
							&lt;/slot&gt;
						&lt;/ul&gt;
					  &lt;/div&gt;</span><span class="token template-punctuation string">`</span></span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>

    <span class="token keyword">var</span> vm <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
        <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#root'</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br></div></div><h2 id="具名插槽的缩写"><a href="#具名插槽的缩写" class="header-anchor">#</a> 具名插槽的缩写</h2> <p>跟 <code>v-on</code> 和 <code>v-bind</code> 一样，<code>v-slot</code> 也有缩写，即把参数之前的所有内容 (<code>v-slot:</code>) 替换为字符 <code>#</code>。例如 <code>v-slot:header</code> 可以被重写为 <code>#header</code>：</p> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>base-layout</span><span class="token punctuation">&gt;</span></span>
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>template</span> <span class="token attr-name">#header</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>h1</span><span class="token punctuation">&gt;</span></span>Here might be a page title<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>h1</span><span class="token punctuation">&gt;</span></span>
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>template</span><span class="token punctuation">&gt;</span></span>

  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>p</span><span class="token punctuation">&gt;</span></span>A paragraph for the main content.<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>p</span><span class="token punctuation">&gt;</span></span>
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>p</span><span class="token punctuation">&gt;</span></span>And another one.<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>p</span><span class="token punctuation">&gt;</span></span>

  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>template</span> <span class="token attr-name">#footer</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>p</span><span class="token punctuation">&gt;</span></span>Here's some contact info<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>p</span><span class="token punctuation">&gt;</span></span>
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>template</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>base-layout</span><span class="token punctuation">&gt;</span></span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br></div></div><p>然而，和其它指令一样，该缩写只在其有参数的时候才可用。这意味着以下语法是无效的：</p> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token comment">&lt;!-- 这样会触发一个警告 --&gt;</span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>current-user</span> <span class="token attr-name">#</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>{ user }<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
  {{ user.firstName }}
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>current-user</span><span class="token punctuation">&gt;</span></span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><p>如果你希望使用缩写的话，你必须始终以明确插槽名取而代之：</p> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>current-user</span> <span class="token attr-name">#default</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>{ user }<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
  {{ user.firstName }}
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>current-user</span><span class="token punctuation">&gt;</span></span>
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