“Unexpected side effect in computed function”错误通常表示在计算属性函数中发生了不应该有的“副作用”或“影响”。在Vue中,计算属性应该是纯粹的,即它们应该只依赖于它们的响应式依赖,并返回一个新的值,而不应该产生任何可观察到的副作用,比如修改组件的状态、执行异步操作、操作DOM等。 3. 分析导致computed函...
This Vue 3 plugin allows you to create computed properties that are computed asynchronously. Latest version: 3.0.0, last published: 4 years ago. Start using vue3-async-computed in your project by running `npm i vue3-async-computed`. There is 1 other proj
vue/eslint_vue/no-side-effects-in-computed-properties报错 出现这个错误的缘由是因为我在vue3中的computed中, 把computed的回调函数当做数据监听器处理程序, 在里面修改了ref定义的变量数据的值. constcurArticle =computed(() =>{if(curArticleList.value.length===0) { articleData.value.name= articleData....
setvalue(newVal){raw=newValtrigger(r,'value')},}returnr}functioncomputed(getter){letresult=ref()effect(()=>(result.value=getter()))returnresult}letproduct=reactive({price:5,quantity:2})lettotal=computed(()=>{returnproduct.price*product.quantity})console.log('beforeupdatedquantityt...
new Vue({ data: { user: { email: "1231231231@qq.com", nickname: "小白", phone: "13812345678"//手机号用string存,因为有时候会出现+86 } }, computed: { //计算属性 displayName: { get() { const user = this.user; return user.nickname || user.email || user.phone; ...
<Vue 源码笔记系列6>计算属性 computed 的实现 · 语雀www.yuque.com/chenshier/chuyi/hyt12u 上一章我们已经学习过 watch,这一章就来看一下计算属性 computed 的实现。 2. 流程图 老规矩,先上图。但是本期的流程图比较简略,因为 computed 的实现很大程度上依赖了之前我们讲的数据响应式原理的部分,这部分...
vue-async-computed With this plugin, you can have computed properties in Vue that are computed asynchronously. Without using this plugin, you can't do this: exportdefault{data(){return{userId:1}},computed:{username(){returnfetch(`/get-username-by-id/${this.userId}`)// This assumes that...
I've already updated to Vue 3.4.19 and Pinia 2.1.7 - but still same issue. Usage in Component: computed: { ...mapWritableState(useTemporaryStore, ["currentObject"]), }, Store: import { defineStore } from "pinia"; export const useTemporaryStore = defineStore("TemporaryStore", { state...
在运行的时候出现vue.js:634 [Vue warn]: Error in render: "TypeError: currentTimeA is not a function" 在查看网上的解决办法时了解到computed(计算属性)中的内容会被看作是一个属性,正确的书写方法为。 computed:{ currentTimeA:function() {returnfunction(){Date.now();} ...
import { readonly, shallowRef, watchEffect } from 'vue-demi'/** * Note: If you are using Vue 3.4+, you can straight use computed instead. * Because in Vue 3.4+, if computed new value does not change, * computed, effect, watch, watchEffect, render dependencies will not be triggered. ...