I have a SFC component and everything works great, but vue-tsc keeps throwing an error about a v-if expression saying that the object is possibly undefined, but it says that regardless of things I'm trying to do to handle it. I'll post the full SFC below but here's the variations ...
如图,编译时报了bject is possibly 'undefined的错。确实我的obj打印出来是undefined,但是这个方法其实是有的,if下面是走得通的。但是因为构建用了fix规范,以至于会一直报错。百度搜了是ts的问题,然后在ts的compilerOptions里面把 "strict": false,确实不报错了,但是担心统一改成 false会影响项目,因此求问大佬有没有...
鼠标移上去 Object is possibly 'undefined',意思是treeRef.value可能是一个undefined,undefined.function() 浏览器肯定会报错对不对,typescript的好处就是让我们在编译阶段就给我们抛出错误越早发现问题,后期修复工作量就越少,其实这个问题好解决,因为我们知道组件内部是有这个方法,那么我们就给treeRef.value后面强制跟...
理解“object is possibly null”错误的含义 在Vue(以及TypeScript环境)中,“object is possibly null”是一个编译时错误,表示在尝试访问可能为null或undefined的对象的属性或方法时,TypeScript编译器无法确保该对象不是null或undefined。这通常发生在未正确初始化或检查对象的情况下。 分析Vue代码中可能导致“object is...
ts对resourceId: number = -1这种已经做了推断,不需要再指定类型 直接resourceId = -1就可以 vue中使用this.$refs.createOrEdit.openRole()报错误Object is possibly ‘undefined’. 改用了这种调用形式 components: { CreateOrEdit }, methods: {
vue:168:9 - error TS1117: An object literal cannot have multiple properties with the same name. 168 grid: { ~~~ src/directives/canvasMakeWaterMark.ts:30:3 - error TS18047: 'ctx' is possibly 'null'. 30 ctx.rotate((rotate * Math.PI) / 180); ~~~ src/directives/canvasMakeWaterMark....
❯ npm run build > hello-vue3@0.0.0 build > vue-tsc --noEmit && vite build src/views/home.vue:27:7 - error TS2532: Object is possibly 'undefined'. 27 child.value.isShowDialog = true ~~~ Found 1 error in src/views/home.vue:27 这是因为在默认情况下 null 和undefined 是所有...
Object is possibly 'undefined'.Vetur(2532) 第二个问题:addChecked如下,res.data就是menuData和topicData数组对象如下: function addChecked(data) {for (let i = 0; i < data.length; i++) { data[i].checked = false;}return data; } 参数类型改成了这样:function addChecked(data: Array) { ....
通常，当我们需要将数据从父组件传递到子组件时，我们使用 props。想象一下这样的结构：你有一些深嵌套...
// 之前的导入...import{userInfoKey,setUserInfoKey}from'@/symbols';exportdefaultdefineComponent({setup(){constuserInfo=inject(userInfoKey);constsetUserInfo=inject(setUserInfoKey);userInfo.value// ts 报错 > Object is possibly 'undefined'userInfo?.value// 不会报错,类型为 Ref<UserInfo | undefined>}}...