直接上代码：
<!DOCTYPE html>
<html>
<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>vue bind</title>
</head>
<body>
<input type="text" id="text">
<span id="span"></span>
<script>
function getEle (idName){
return document.querySelector(idName)
}
let obj = {
text: ''
}
var text = getEle('#text');
var span = getEle('#span');
Object.defineProperty(obj, 'text', {
set (value){
console.log(span)
span.innerText = value
text.value = value
},
get (){
console.log('get value')
}
})
console.log(text)
text.addEventListener('keyup', function (e){
obj.text = e.target.value;
})
</script>
</body>
</html>标签： Vue
