<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app">
<input type="text" v-model='msg'>
<input type="text" :value='msg1'>
</div>
</body>
</html>
<script src="./vue.js"></script>
<script>
new Vue({
el:'#app',
data () {
return {
msg:"",
msg1:'test'
}
}
})
</script>
我先输入msg1 然后在输入msg,为啥msg1的值会被重置
因为你绑定了value为msg1,而你并没有去修改msg1,那么在下一次渲染的时候就会设置input的value为msg1也就是空