确认是否已经正确导入了ref函数: 在Vue 3中,ref需要从vue包中导入。确保你的文件中有类似下面的导入语句: javascript import { ref } from 'vue'; 如果没有这行代码,或者导入路径错误,就会导致ref未定义。 确认ref的使用方式是否正确: ref应该被用来创建一个响应式的引用对象。例如: javascript const myRef...
另外引入 vue 文件需要加上后缀.vue,否则也会报相同错误。 ERROR: 'ref' is not defined 错误代码: setup(){ const isOpen = ref(false); return { isOpen, } } 运行都没报错,怎么突然 undefined 了?? 等等,因为偷懒,vue 的语法糖都是unplugin-auto-import每个文件自动引入的: // vite.config.js import...
console.log(props.mymoney)constmoney =ref(0)if(props.mymoney ==='一套房') { money.value=100000}return{ money } } 结果为: 我们还可以解构attrs setup(props, {attrs}){ console.log(props,attrs.name) console.log(props.mymoney)constmoney =ref(0)if(props.mymoney ==='一套房') { money....
vue3常见问题及解决方案(二)——Property "" was accessed during render but is not defined on instance. instancelistrendersampleundefined [Vue warn]: Property "handleTableSave" was accessed during render but is not defined on instance. at at <List onVnodeUnmounted=fn ref=Ref< undefined > key=...
[Vue warn]: Property "handleTableSave" was accessed during render but is not defined on instance. at at <List onVnodeUnmounted=fn ref=Ref< undefined > key="/lims/wf/resultentry/bysample/sample/List" > 原因分析 在文件"/lims/wf/resultentry/bysample/sample/List" 中某组件设置了其事件的响应...
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 export...
constvisible = ref(false) constshowModal ==>{ visible.value =true } </> .hello{ position: relative; width:100px; } 复制代码 子组件 <template> <teleportto="#app"> modal </teleport> </template> <setuplang="ts"> constprops = defineProps<...
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 ...
constvisible = ref(false) constshowModal =()=>{ visible.value =true } .hello{ position: relative; width:100px; } 子组件 <template> <teleportto="#app"> modal </teleport> </template> constprops = defineProps<{modelValue:Boolean}>() const...
问题描述 [Vue warn]: Property "handleTableSave" was accessed during render but is not defined on instance. at at <List onVnodeUnmounted=fnref=Ref< undefined > key="/lims/wf/resultentry/bysample/sample/List" > 原因分析 在文件"/lims/wf/resultentry/bysample/sample/List" 中某组件设置了其事...