javascript - vue组件在加载页面时不显示。如何让它显示？

Question

<project-comp></project-comp>加载页面时组件不显示。我设置了projects使用 created 的属性 Hook 。但它不起作用。

这是我的代码:

Vue.component('project-comp',{
        template: `
        <div class='box'>            
            <div v-for='one in this.$parent.projects'>
               <h2> @{{one.place}}</h2>
               <h2> @{{one.time}}</h2>
            </div>
        </div>
        `,
});

var app = new Vue({
        el: '#root',

        props:['projects'],

        created: function () {
            $.post(
                'url',
                {'city':'beijing'},
                function(data){
                    this.projects = data;
                },
                'json'
            );
        },


});

Answer 1

似乎这个范围不正确，你应该有它:

var app = new Vue({
        el: '#root',    
        props:['projects'],
        created: function () {
            var self = this
            $.post(
                'url',
                {'city':'beijing'},
                function(data){
                    self.projects = data;
                },
                'json'
            );
        },
});

对于 ES-6，它可以是:

var app = new Vue({
        el: '#root',    
        props:['projects'],
        created: function () {
            $.post(
                'url',
                {'city':'beijing'},
                (data) => {
                    this.projects = data;
                },
                'json'
            );
        },
});

检查 this进行解释。