Uncaught TypeError: Right-hand side of 'instanceof' is not an object

以你之姓@ 2022-03-19 14:19 526阅读 0赞

1、错误描述

log.js?1afd:24 [HMR] Waiting for update signal from WDS...
    vue.runtime.esm.js?2b0e:3261 
    Uncaught TypeError: Right-hand side of 'instanceof' is not an object
    at assertType (vue.runtime.esm.js?2b0e:1703) 
    at assertProp (vue.runtime.esm.js?2b0e:1662)
    at validateProp (vue.runtime.esm.js?2b0e:1596)  
    at loop (vue.runtime.esm.js?2b0e:3442) 
    at initProps (vue.runtime.esm.js?2b0e:3475)
    at initState (vue.runtime.esm.js?2b0e:3416) 
    at VueComponent.Vue._init (vue.runtime.esm.js?2b0e:4720)
    at new VueComponent (vue.runtime.esm.js?2b0e:4888)
    at createComponentInstanceForVnode (vue.runtime.esm.js?2b0e:4391) 
    at init (vue.runtime.esm.js?2b0e:4222)

2、错误原因

message后面应该是一个数据类型，如String、Number

<template>
    	<div></div>
    </template>
    
    <script>
    	export default{
    		name: 'You',
    		props: {
    			message: '欢迎光临！'
    		}
    	}
    </script>
    
    <style>
    </style>

3、解决办法

由于message是个字符串类型，需要写成message:String

<template>
    	<div>{
       {message}}</div>
    </template>
    
    <script>
    	export default{
    		name: 'You',
    		props: {
    			message: String
    		}
    	}
    </script>
    
    <style>
    </style>

Uncaught TypeError: Right-hand side of 'instanceof' is not an object

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