我有一个如下所示的父组件,它实现了动态组件切换 . 挑战在于我想确保索引0处的componentArgs name
数据有效 . 第 this.components.indexOf(componentArgs[0]) > -1
行抛出TypeError .
Parent.vue?e9d7:xx Uncaught TypeError:无法读取未定义的属性'indexOf'
显然, this.components
不是访问父组件的正确方法 . 我该如何做到这一点?
<template>
<component v-bind:is="currentForm" v-on:switchcomponent="switchComponent"></component>
</template>
<script>
import Login from '@/components/Login'
import Signup from '@/components/Signup'
export default {
name: 'Parent',
components: {
login: Login,
signup: Signup
},
data () {
return {
title: 'Sign Up or Login',
email: '',
currentForm: 'login'
}
},
methods: {
switchComponent: function (componentArgs) {
// componentArgs format: [name, title, email (Use empty string if N/A.)]
let name = 0
let title = 1
let email = 2
console.log('component: ' + componentArgs)
if (this.isValidComponent(componentArgs)) {
this.currentForm = componentArgs[name]
this.title = componentArgs[title]
this.email = componentArgs[email]
}
},
isValidComponent: function (componentArgs) {
let exactLength = 3
if (componentArgs.length === exactLength) {
console.log('components ' + this.components)
if (this.components.indexOf(componentArgs[0]) > -1) {
console.log('component exists')
return true
}
return false
}
return false
}
}
}
</script>
1 回答
可以从中访问components属性
所以你的功能可以
其中name是组件的名称 . 我无法真正告诉你在传递的是什么
componentArgs
.Example .