ReferenceError: Cannot access ‘xxxx‘ before initialization ,原因之前已经初始化过,但页面组件嵌套,需要被重复引用。 1、开启异步引用来解决 components: { DeviceManage: defineAsyncComponent (()=> import('@/views/operation/mechanism/index.vue')) } 2、用ifrme来解决重复嵌套,缺点:用iframe 传递参数的话,...
Cannotaccessxxxbeforeinitialization Cannotaccessxxxbeforeinitialization 因为在变量未初始化的情况下就访问变量 在使⽤let以及const声明变量不会提升,所以就会抛错,⽽使⽤var声明的变量,会声明提升,所以会打印出undefined function test() { console.log(b); // undefined console.log(a); // 报错(Ca...
简介:ReferenceError: Cannot access ‘xxx‘ before initialization 执行下面代码 let myname= 'kaimo666'{console.log(myname)let myname= 'kaimo777'} 最终打印结果 分析原因 在块作用域内,let声明的变量被提升,但变量只是创建被提升,初始化并没有被提升,在初始化之前使用变量,就会形成一个暂时性死区。 另外...
watchEffect里收集了函数依赖,而变量形式函数定义在watchEffect之后时,控制台报错 Cannot access 'xxx' before initialization 解决方法: watchEffect位置放在变量函数之后 函数声明为function形式(待测试) watchEffect配置选项 flush: "post",等同于watchPostEffect
letmyname='kaimo666' { console.log(myname) letmyname='kaimo777' } 1. 2. 3. 4. 5. 最终打印结果 分析原因 在块作用域内,let声明的变量被提升,但变量只是创建被提升,初始化并没有被提升,在初始化之前使用变量,就会形成一个暂时性死区。
ReferenceError: Cannot access 't' before initialization at H (app.js:1) at z (app.js:1) at U (app.js:1) at app.js:1 at app.js:1 at E (app.js:1) at T (app.js:1) at new A (app.js:1) at o.mounted (app.js:1) at He (app.js:1) ...
报错:ReferenceError: Cannot access 'X' before initialization 将let换成var,let只能声明一次
(node:19652) UnhandledPromiseRejectionWarning: ReferenceError: Cannot access 'password' before initializationAsk Question Asked 3 years, 6 months ago Modified 3 years, 6 months ago Viewed 1k times Report this ad 3 I don't know how should i resolve this error.. also , i got a wa...
When I run my angular application v15 in live development, everything works as expected. But when I run the serve in production or build the code an run it in a docker container, it throws me an error: 402.js:1 Error: Uncaught (in promise): ReferenceError: Cannot access '...
I am not quite sure how to describe what the situation actually is, but the bottom line is that in some rare cases importing a module in the wrong order causes ReferenceError: Cannot access '<something>' before initialization. Enabling both innerGraph and usedExports seems to allow one to wor...