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                ## 1. 什么是數據的雙向綁定mvvm **vue數據雙向綁定是通過數據劫持結合發布者-訂閱者模式的方式來實現的** * **單向**:指vue中data渲染頁面 * **雙向**:指vue中data渲染頁面,和修改頁面數據影響vue中data數據 ![](https://img.kancloud.cn/63/a7/63a799910283055df31a76afabde4850_493x168.png) ## 2. 頁面中實現雙向綁定 **v-bind :** 只能實現單向綁定,即vue決定頁面的值(修改頁面的值不會影響vue中的data) **v-model:** 實現頁面和vue的值相互影響 ***** ***下面展示了v-bind與v-model的區別*** ![](https://img.kancloud.cn/4a/eb/4aebb544e8e20ef77a25b6dd4fa97d8b_502x203.gif) ~~~ <div id="root"> <!--單向數據:value Vue決定頁面的值,修改輸入框的值,不會改變content的值--> 不可修改:<input :value="content"/><br/><br/> <!--雙向數據綁定v-model 可以實現頁面修改數據的值--> 可以修改:<input v-model="content"/> <div>{{content}}</div> </div> <script> new Vue({ el:"#root", data:{ title1:"v-bind對應的屬性值", content:"Please enter your name" } }) </script> ~~~
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