vue學習04 v-on指令
v-on的作用是爲元素綁定事件，比如click單擊，dbclick雙擊
v-on指令可簡寫爲@
代碼測試
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<!-- 2.html的結構 -->
<div id="app">
<input type="button" value="v-on指令" v-on:click="doIt">
<input type="button" value="v-on指令" @click="doIt">
<input type="button" value="v-on雙擊事件" @dblclick="doIt">
<h3 @click="changeFood">{{ food }}</h3>
</div>
<!-- 1.開發環境版本 -->
<script src="js/vue.js"> </script>
<!-- 3.創建vue實例 -->
<script>
var app = new Vue({
el:"#app",
data:{
food: "西紅柿炒雞蛋"
},
methods:{
doIt: function(){
alert("點我嘎哈！");
},
changeFood: function(){
console.log(this.food);
this.food+="好好喫!"
}
},
})
</script>
</body>
</html>
效果圖
![image-20200925071919925]()
