解决方案: 确保生命周期钩子按正确的顺序调用,并理解每个钩子的作用时间点。 import { onMounted, onUnmounted } from'vue'; onMounted(()=>{ console.log('Component mounted'); }); onUnmounted(()=>{ console.log('Component unmounted'); }); 6. 模板语法错误 错误示例: <template> {{ isVisible ?'Vi...
Composition API 又名组合式API,我们要知道 我们常用的vue2使用的是OptionAPI,简单的说就是我们熟悉的 data, computed , method等等,但是在vue3中 我们并不建议使用OptionAPI。 在Vue2中 我们一个功能得分不同的许多地方 比如数据放在data中 方法放在methods中 分开的特别散乱 一两个功能还好 但是页面可能功能很多 ...
<template> <editor :initial-value="editorText" :options="defaultEditorOptions" height="500px" initial-edit-type="wysiwyg" preview-style="vertical" /> </template> import { reactive, ref, onMounted, onUnmounted, nextTick } from 'vue' import '@toast-ui/editor/dist/toastui-editor.css' import...
beforeCreate -> use setup() created -> use setup() beforeMount -> onBeforeMount mounted -> onMounted beforeUpdate -> onBeforeUpdate updated -> onUpdated beforeUnmount -> onBeforeUnmount unmounted -> onUnmounted errorCaptured -> onErrorCaptured renderTracked -> onRenderTracked renderTriggered -> on...
import { ref, onMounted, onUnmounted } from "vue"; import * as THREE from "three"; const amountX = ref(50); const amountY = ref(50); const color = ref("#e1b284"); const topOffset = ref(350); let count = 0; let mouseX = 0; ...
In vue3, assembly not is defined as all events listener component triggered, Vue now will add them as a native event listener to the root element subassembly (unless you have set the option subassembly inheritAttrs: false ) <!-- vue3 --> <my-component v-on:close="handleComponentEvent"...
onUnmounted:用于在组件从DOM中移除之前执行一些操作。可以在setup函数中使用onUnmounted来注册一个回调函数,在组件被销毁之前执行。 provide和inject:用于在组件树中进行依赖注入。通过provide可以向子组件提供一个值,而子组件可以使用inject来接收这个值。 组合API的优势在于它提供了一种更灵活、更可组合的方式来组织组件...
beforeDestroy onBeforeUnmount destroyed onUnmounted errorCaptured onErrorCapturedNew hookIn addition to the 2.x life cycle equivalent, the Composition API also provides the following debugging hooks:-onRenderTracked -onRenderTriggeredBoth hooks received the options of DebuggerEvent and onTrack and onTrigger...
< setuplang= "ts"name= "module"> import{ ref, onMounted, onUnmounted } from'vue'; import{ ElForm, ElTab…
const isArray = Array.isArray; const isMap = (val) => toTypeString(val) === "[object Map]"; const isSet = (val) => toTypeString(val) === "[object Set]"; const isDate = (val) => toTypeString(val) === "[object Date]"; ...