我使用Element-UI component NavMenu在我的网络应用程序中创建导航栏。我正在使用Vue.JS + TypeScript。
所以我在文件夹" navBar"中创建了一个Vue组件,在其中我已经:
组件navBar.vue
:
<template src="./navBar.html">
</template>
<script src="./navBar.ts" lang="ts">
</script>
html navBar.html
:
<div id="navbar">
<el-menu
mode="horizontal"
:select="handleSelect"
background-color="rgba(95, 75, 139, 1)"
text-color="#fff"
active-text-color="rgba(255, 255, 255, 1)">
<el-menu-item index="1">Item 1</el-menu-item>
</el-menu>
</div>
TypeScript navBar.ts
:
import Vue from 'vue'
import Component from 'vue-class-component'
export default class NavBar extends Vue {
handleSelect (key: string, keyPath: string) {
console.log(key, keyPath)
}
}
但是当我点击&#34;第1项&#34; 时,我收到错误:
[Vue warn]: Property or method "handleSelect" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.
我无法解释为什么,任何想法?
我已经看过其他问题,例如this,但没有人使用过TypeScript。
答案 0 :(得分:1)
您没有使用@Component
装饰器,因此NavBar
类可能没有正确设置Vue
实例的方法。
在类定义之前添加装饰器:
import Vue from 'vue'
import Component from 'vue-class-component'
@Component
export default class NavBar extends Vue {
handleSelect (key: string, keyPath: string) {
console.log(key, keyPath)
}
}
Here's the GitHub repo's README for the vue-class-component
module.