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                # 插槽使用 ## 了解 > 在子組件中,使用特殊的元素`<slot>`就可以為子組件開啟一個插槽。 > 該插槽插入什么內容取決于父組件如何使用。 ``` <div id="app"> <my-com>你好</my-com> </div> <template id="myCom"> <div> <slot></slot> </div> </template> <script src="js/vue.js"></script> <script> Vue.component('my-com',{ template:'#myCom' }) var vm = new Vue({ el:'#app' }) </script> ``` :-: ![](https://img.kancloud.cn/59/8e/598e9ba1c51bf47c61621a26dffa5b29_176x133.png) ## 插槽默認值 > 如果父組件沒有對子組件的插槽傳遞內容,那么插槽可不可以顯示默認值呢? > 如果傳值,則顯示傳遞的內容 ``` <div id="app"> <my-com></my-com> <my-com>你好</my-com> <my-com> <h2>插槽</h2> <p>果然好用</p> </my-com> </div> <template id="myCom"> <div> <slot>我是默認值</slot> </div> </template> <script src="js/vue.js"></script> <script> Vue.component('my-com',{ template:'#myCom' }) var vm = new Vue({ el:'#app' }) </script> ``` :-: ![](https://img.kancloud.cn/b2/ba/b2ba307da9856b231f0e94c682908e5c_207x158.png)
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