vue中的nextTick主要用于处理数据动态变化后，DOM还未及时更新的问题，用nextTick就可以获取数据更新后最新DOM的变化
<!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 src="js/vue.min.js"></script>
</head>
<body>
<div id="app">
<div id="div" v-if="showDiv">这是一段文本</div>
<button @click="getText">获取div内容</button>
</div>
</body>
</html>
<script>
var app = new Vue({
el : "#app",
data:{
showDiv : false
},
methods:{
// getText:function(){
// this.showDiv = true;
// var text = document.getElementById('div').innnerHTML;
// console.log(text);
// }
getText:function(){
this.showDiv = true;
this.$nextTick(function(){
var text = document.getElementById('div').innnerHTML;
console.log(text);
});
}
}
})
</script>
