<!DOCTYPE html>
<html lang="en">
<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>Document</title>
</head>
<body>
<div id="app">
<input type="text" name="input" v-model="{{name}}"><br/>
<p>{{name}}</p>
</div>
<script src="vm.js"></script>
<script>
let vm = new Vue({
el: '
data: {
name: '大白鑫'
}
})
</script>
</body>
</html>
class Vue {
constructor(options) {
this.el = document.querySelector(options.el)
this._data = options.data
this.dep = {}
this.initData()
this.initDom()
}
initDom() {
let childNodes = this.el.childNodes
const _this = this
for(let item of childNodes){
console.log('child', item)
if(item.nodeType === 1){
const value = item.getAttribute('v-model')
if(value){
const modelName = value.match(/\{\{(.+?)\}\}/)[1]
item.value = _this.data[modelName]
item.addEventListener('input', function (e) {
_this.data[modelName] = e.target.value
console.log('aaaa', _this.data[modelName])
})
}
}
if(item.childNodes.length != 0){
const value = item.childNodes[0].data.trim()
const modelName = value.match(/\{\{(.+?)\}\}/)
if(modelName){
console.log('sssss', modelName)
item.innerHTML = this.data[modelName[1]]
this.dep[modelName[1]] = item
}
}
}
}
initData() {
this.data = {}
let _this = this
for(let key in _this._data){
Object.defineProperty(_this.data, key, {
set(newValue) {
_this._data[key] = newValue
console.log('setProperty', _this.dep[key])
if(_this.dep[key]) {
_this.dep[key].innerHTML = newValue
}
},
get(){
return _this._data[key]
}
})
}
this.data['name'] = '11'
}
}```
