vue中的计算属性 computed 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

</head>
<body>
<div id="app">
    <p>{{msg}}</p>
    <button @click="clickHandler">点击修改</button>

</div>
<script src="vue.js"></script>
<script>
    let vm=new Vue({
         el: '#app',
        data() {
            return {
                msg: "alex",
                age: 18
            }

        },
        methods: {
            clickHandler() {
                //this的指向就是当前对象  Vue
                this.msg = "wusir";
                this.age = 20;
                console.log(11,this);
            },
            // clickHandler: function () {
            //      this.msg = "daahuadan";
            //     console.log(22,this);//Vue
            // }

        },
        computed:{
             myMsg:function(){
                 //计算属性只有getter方法
                 return `我的名字是$(this.msg)`
             }
        }
    })
</script>
</body>
</html>
posted @ 2018-12-01 16:52  团子emma  阅读(80)  评论(0)    收藏  举报