parent.children.forEach(child=>{ console.log(child) }) 运行后出现以下错误: VM384:53 Uncaught TypeError: parent.children.forEach is not a function 问题原因: parent.childrenisNodeList类型, 类似Array的object: 包含lengthproperty, which indicates the number of nodes Each node is a property value wi...
在JavaScript 开发中,你可能会遇到一个常见的错误:“forEach 不是一个函数”(TypeError: forEach is not a function)。该错误通常发生在尝试对非数组、非 Set 或非 Map 的对象使用forEach()方法时。由于 JavaScript 是动态类型语言,这种情况特别容易出现,尤其是在调用数组方法于字符串等情况时。为了修复这个错误,...
1,错误:Uncaught TypeError: hdList.forEach is not a function 2,错误的原因 原生js获取的DOM集合是一个类数组对象,所以不能直接利用数组的方法(例如:forEach,map等),需要进行转换为数组后,才能用数组的方法! 3,6种解决办法(假如hdList是一个DOM集合) (1),Array.from()方法 代码语言:javascript 代码运行次...
log("输出:", value, key); }) //console输出如下: /*VM978:6 Uncaught TypeError: obj.forEach is not a function at <anonymous>:6:5 (anonymous) @ VM978:6*/ //查看obj.__proto__.forEach和Object.prototype.forEach obj.__proto__.forEach //undefined Object.prototype.forEach //undefined ...
但每次,我都会收到错误:TypeError: data.forEach is not a function”,我不知道为什么。 如果有人能将我推向正确的方向,将不胜感激! 是一个没有.forEach 使用data.quotesArray.forEach(..代替data.forEach(.. http://js.do/code/100647 如果你想遍历数据,那么你可以使用Object...
2.检测js的object是否支持forEach(): let obj = { name: "hello", age: 22, gender: 0 } obj.forEach((value, key, oriObj)=>{ console.log("输出:", value, key); }) //console输出如下: /*VM978:6 Uncaught TypeError: obj.forEach is not a function ...
There are four areas in the this code where the following throws a forEach. It is not a function because parent.children is not an array. Instead, it is an HTMLCollection and as such doesn't have forEach method. obj[that.children].forEac...
为实现ForEach重新渲染,需要结合@Observed和@ObjectLink装饰器使用。例如,在文章列表卡片上点击“点赞”按钮,从而修改文章的点赞数量。收起 深色代码主题 复制 @Observed class Article { id: string; title: string; brief: string; isLiked: boolean; likesCount: number;...
groupByon Object:TypeError: this.items.forEach is not a function#313 Open SDIjeremyopened this issueJan 21, 2023· 1 comment· May be fixed by#314 SDIjeremycommentedJan 21, 2023• edited ❌Javascript Collect.js collect({"posts.1.published":"The posts.1.published must be accepted.","po...
Array.prototype.forEach) { Array.prototype.forEach = function(callback, thisArg) { var T, k; if (this == null) { throw new TypeError(' this is null or not defined'); } // 1. Let O be the result of calling toObject() passing the // |this| value as the argument. var O =...