v-bind指令用于为元素绑定指令。完整写法为：v-bind：属性名，简写方法仅保留：属性名
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>v-if</title>
</head>
<body>
<!-- 导入vue包 -->
<script src="https://cdn.jsdelivr.net/npm/vue@2"></script>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<div id="app">
<!-- 完整写法 -->
<img v-bind:src="imgSrc" alt="">
<!-- 简写 -->
<img :src="imgSrc" alt="" :title="imgTitle">
<script>
var app=new Vue({
el:"#app",
data:{
imgSrc:"https://www.xxsirs.top/xxsirs.jpg",
imgTitle:"博客logo"
},
})
</script>
</body>
</html>