1. 最简单的vue
- el: dom节点
- data: 数据
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue 测试实例 - 菜鸟教程(runoob.com)</title>
<script src="https://cdn.staticfile.org/vue/2.4.2/vue.min.js"></script>
</head>
<body>
<div id="app">
<p> {{ message }}</p>
<input type="text" v-model="message">
</div>
<script type="text/javascript">
var app = new Vue({
el: '#app',
data: {
message: 'Hello Vue!'
}
})
</script>
</body>
</html>
2. Vue 数据里的数组对象更新,但是视图不更新
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue 测试实例 - 菜鸟教程(runoob.com)</title>
<script src="https://cdn.staticfile.org/vue/2.4.2/vue.min.js"></script>
</head>
<body>
<div id="app">
<p>arr:{{arr}}</p>
<p>obj:{{obj}}</p>
<button @click="btn">默认方法</button>
<button @click="btn2">this.$set</button>
</div>
<script type="text/javascript">
var vm = new Vue({
el: '#app',
data() {
return {
arr: [1, 2, 3],
obj: {
a: 1,
b: 2
}
}
},
methods: {
btn() {
this.arr[0] = '11';
this.arr.length = 1;
console.log(this.arr); // ['OBKoro1'];
this.obj.c = '11';
delete this.obj.a;
console.log(this.obj); // {b:2,c:'OBKoro1'}
},
btn2() {
this.$set(this.arr, 0, "11"); // 改变数组
this.$set(this.obj, "c", "11"); // 改变对象
}
}
})
</script>
</body>
</html>
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