setup中定义响应式数据 (1)、引入reactive函数 (2)、通过reactive定义对象类型的响应式数据 通过reactive函数定义数据。 <template> {{obj.msg}} 点我 点我修改变量 </template> import { reactive }from'vue'exportdefault{ name:'App', setup(){constobj =reactive({ msg:'hello'})constchange = () =>{...
至于 Vue 3 的数据响应式原理这里不展开说,可以参考我之前写的另一篇文章关于vue3的Proxy[6] 。 reactive.png 双向绑定实现 父组件 <template> 打开弹窗 <Modalv-model="visible"></Modal> </template> <setuplang="ts"> importModalfrom'./modal-setup.vue' defineProps<{msg: string }> constvisible ...
一、首先确保有两个文件: tsconfig.json vite.config.ts(注:如果是vue.config.js,则手动改为vite.config.js) 二、 在ts.config.json中修改 {"compilerOptions": { ..."paths": {"@/*": ["src/*"] } } } 三、在vite.config.ts中修改 exportdefaultdefineConfig({ ...resolve: {...
如题所述:显示无法找到方法,代码如下: <template> <vab-card shadow="hover"> <el-date-picker v-model="item.value" :key="item.id" end-placeholder="结束日期" range-separator="至" start-placeholder="开始日期" type="datetimerange" /> 0" onclick="subDatePickerFun(i)" class="leftLine"> ...
ref的优先级更高//定义const myForm = reactive({name: '小明',age: 18})<el-form ref="myForm" v-model="myForm"></el-form>console.log(myForm)// 打印出来的是el-form的组件DOM实例,模板找不到v-model的值,就会报`Property "myForm" was accessed during render but is not defined on ...
options.lazy){reaction()}returnreaction}exportfunctionrunAsReaction(reaction,fn,context,args){// do not build reactive relations, if the reaction is unobservedif(reaction.unobserved){returnReflect.apply(fn,context,args)}// only run the reaction if it is not already in the reaction stack// TODO...
isProxy, isReactive, isReadonly, isRef, isShallow, markRaw, onScopeDispose, pauseTracking, proxyRefs, reactive, readonly, ref, resetTracking, shallowReactive, shallowReadonly, shallowRef, stop, toRaw, toRef, toRefs, toValue, track,
const obj = reactive({ a: 1, b: 2, c: { d: 1, e: 2 }, f: [] }) //法一:深层次,当直接侦听一个响应式对象时,侦听器会自动启用深层模式: //可以监听到obj.f = [1]和obj.c.d ++ watch(obj, (newValue, oldValue) => { ...
3. 4. 5. 6. 7. 8. 9. 10. 但是在vue3中报错了~~~ require is not defined 然后想使用vue3中的import.meta.glob 动态导入试试,发现还是不行,404 letimgs=reactive([ import.meta.glob('../../assets/img/index/*')['../../assets/img/index/index1.jpg'], ...
* 为解决 reactiveObj直接赋值targetObj还能在页面上进行响应 * @param {reactive} reactiveObj [setup中需要赋值的reactive对象] * @param {Object} targetObj [目标对象] */exportconstsetReactiveObj=(reactiveObj,targetObj)=>{if(Array.isArray(targetObj)){if(reactiveObj&&reactiveObj.length){reactiveObj.le...