错误: forEach is not a function error with JavaScript array 怎么发生的: 尝试了好几种方法,最后发现我的forEach没有大写,json对象是可以调用数组的forEach方法 错的原因: 非json的Object对象没有forEach方法 如果遇到普通的object对象如何调用forEach方法呢: The parent.children is an Array like object. Use...
1. 获取html dom,然后遍历dom时,报错 list .forEach is not a function function removeImg(){ var list=document.getElementsByTagName("img"); list = Array.from(list); list.forEach((element, index) => {element.remove(); }); } 1. 2. 3. 4. 5. 6. 7. 2. 解决办法: 加上一行代码 l...
constdata =null; // 首先检查是否为数组 if(Array.isArray(data)) { data.forEach(element=>{ console.log(element); }); } 结论 “Uncaught TypeError: parent.children.forEach is not a function”错误出现在你尝试对非数组、非 Set 或非 Map 的对象调用forEach()函数时。通过确保在数组或 Map 类型的...
console.log(parent.children) 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 ...
1. 获取html dom,然后遍历dom时,报错 list .forEach is not a function functionremoveImg(){varlist=document.getElementsByTagName("img"); list =Array.from(list); list.forEach((element, index) =>{element.remove(); }); } 2. 解决办法: ...
If you run the above code in the browser console, you will get a similar error as before: The solution The reason why the error happens is that you are trying to call.forEachfunction on something which is not an array,Map, orSet. So how do we iterate them then? We will solve them...
Array.prototype.forEach = function forEach(callback, thisArg) { var T, k; if (this == null) { throw new TypeError("this is null or not defined"); } var O = Object(this); var len = O.length >>> 0; if (typeof callback !== "function") { ...
forEach(function(key){ html += val[key]; }); html += "</div>" }); $(".realquote").html(html); }); }); }); 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! 原文由 Steven 发布,翻译遵循 CC BY...
const map1 = array1.myMap(x => x * 2); console.log(map1); // expected output: Array [2, 8, 18, 32] forEach的实现 Array.prototype.myForEach = function (callback, thisArg) { var T, k; if (this == null) { throw new TypeError(' this is null or not defined'); ...
forEach为 →→→fruits调用→→→myFunction, 而myFunction的参数又由fruits传入, 本来fruits和myFunction是毫不相干、形同陌路、八竿子打不着的,但是forEach这个媒人偏用她各种威逼利诱等下三滥的手段硬是把它们联系在了一起,让它们有了关系,并且逼迫fruits强制向myFunction传入参数, fruits不给不行,myFunction不...