【发布时间】:2017-11-18 15:48:21
【问题描述】:
有人可以解释一下为什么我在控制台中出现错误
app.js:12666 TypeError: Cannot read property 'uuid' of undefined
at Proxy.render (app.js:95774)
at VueComponent.Vue._render (app.js:15384)
at VueComponent.updateComponent (app.js:13674)
at Watcher.get (app.js:14017)
at new Watcher (app.js:14006)
at mountComponent (app.js:13678)
at VueComponent.Vue$3.$mount (app.js:19232)
at VueComponent.Vue$3.$mount (app.js:21567)
at init (app.js:14980)
at createComponent (app.js:16419)
但是我在页面中获得的链接可以吗?
Vue 文件是这样的
<template>
<div class="main-container">
<h1 class="page-title">Protocols</h1>
<div class="wrapper">
<router-link :to="`/protocol/${protocolListObject.protocol.uuid}/edit`" class="dropdown-item">Click to edit</router-link>
</div>
</div>
</template>
<script>
import moment from 'moment'
export default {
data() {
return {
protocolListObject: {},
error: {},
}
},
created() {
axios.post('/getSingleProtocol/:uuid')
.then((response) => this.protocolListObject = JSON.parse(response.data))
.catch(error => console.log(error.response));
},
mounted() {
}
}
</script>
app.js 看起来像这样(我将删除路由和一些与此无关的内容,以使其更短)
window.Vue = require('vue');
import Vue from 'vue'
import VueRouter from 'vue-router'
import moment from 'moment'
Vue.use(VueRouter)
let ProtocolSummary = Vue.component('protocol-summary', require('./components/ProtocolSummary.vue'));
let ProtocolEdit = Vue.component('protocol-edit', require('./components/ProtocolEdit.vue'));
const routes = [
{ path: '/protocol/:uuid', component: ProtocolSummary },
{ path: '/protocol/:uuid/edit', component: ProtocolEdit },
]
const router = new VueRouter({
mode: 'history',
routes // short for `routes: routes`
})
Vue.prototype.moment = moment
const app = new Vue({
router
}).$mount('#app');
但是当我加载页面时,我得到了一个带有我需要的 UUID 的链接,但是那个控制台错误看起来很糟糕,我想摆脱它
【问题讨论】:
-
可能
protocol.uuid为空 -
组件挂载时没有
protocolListObject.protocol.uuid这样的属性,所以报错。稍后,axios请求设置属性,vue更新链接。 -
@yuriy636 是正确的,protocolListObject 的初始值是一个空数组,因为这是在 URL 内部任何方法来获取它以避免错误?
-
@yuriy636 谢谢它解决了我的问题会回答它,你把我引向正确的方向
标签: javascript vuejs2 vue-router