实现点击按钮输入框里+1
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
//这里选择自己的vue地址
<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div id="app">
<!-- v-model双向数据绑定 显示在输入框里 -->
<input type="text" v-model="num"/>
<!-- num++点击按钮加1 -->
<button type="button" @click="num++">点击加1</button>
</div>
</body>
<script type="text/javascript">
var vm=new Vue({
el:"#app",
data(){
return{
num:1
}
}
})
</script>
</html>
