准备一个HTML的页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script type="text/javascript" src="../js/myVue.js"></script>
</head>
<body>
<!-- <div id="app">
<h1>{{msg}}</h1>
</div> -->
<script type="text/javascript">
const vm = new Vue({
data : {
msg : "Hello",
name : "Jack",
age : 30
}
});
</script>
</body>
</html>VUE的实现
class Vue
{
//定义构造函数
constructor(Options)//一个简单的纯粹的JS对象
{
//options对象类有一个data配置项
Object.keys(Options.data).forEach((propertyName,index) => {
console.log(propertyName,index);
Object.defineProperty(this,propertyName,{
get()
{
return Options.data[propertyName];
},
set(val)
{
Options.data[propertyName] = val;
}
});
});
}
}