/Users/Scott/Projects/JavaScript/test.js:2 Object.entries(obj).forEach(([key, value]) => { ^ TypeError: Object.entries is not a function at Object.<anonymous> (/Users/Scott/Projects/JavaScript/test.js:2:8) at Module._compile (module.js:570:32) at Object.Module._extensio...
我正在尝试映射object但同时它给了我以下错误:TypeError: values.map is not a function。我是 React 开发的新手。 我在Redux 中使用这个方法method 代码 export function createEvent(values) { let modifyValue = values.map(newValue => { return { subject: newValue.id, taskType: newValue.tasktype, time...
subType: string; valueNamingMap: Object; addKeysToObj(deviceValues: object): void { for (let key of Object.keys(deviceValues).map((key) => { return key })) { if (!this.valueNamingMap.hasOwnProperty(key)) { this.valueNamingMap[key] = ''; } } console.log(this, deviceValues); }...
{Object.keys(employee).map((key) => { return (<divkey={key}><h2>{key}: {employee[key]}</h2><hr/></div>); })}<br/><br/><br/>{/* 👇️ iterate object VALUES */} {Object.values(employee).map((value, index) => { return (<divkey={index}><h2>{value}</h2><hr/><...
var obj = new Object(); obj.sayHello(); // TypeError: obj.sayHello is not a function 这个错误提示说明我们在obj对象中找不到名为sayHello的函数项。 要解决这个问题,我们需要确保在调用对象的函数项之前,该函数项已经被正确地定义和赋值。可以通过以下几种方式来定义对象的函数项: 直接在对象中...
is not a function • Slick Carousel Uncaught TypeError: $(...).slick is not a function • Javascript Uncaught TypeError: Cannot read property '0' of undefined • JS: Failed to execute 'getComputedStyle' on 'Window': parameter is not of type 'Element' • TypeError: 'list' object ...
if (action.isArray) { value.length = 0; forEach(data, function(item) { if (typeof item === "object") { value.push(new Resource(item)); } else { // Valid JSON values may be string literals, and these should not be converted ...
let doubledData = Object.values(data).map(x => x * 2); console.log(doubledData); Output: [ 2, 4, 6, 8, 10 ] Conclusion The“typeerror: data.map is not a function reactjs”is an error message that occurs when you are trying to use themap()method on a variable that is not...
pop, isXML(context) ); } } if ( !checkSet ) { checkSet = set; } if ( !checkSet ) { throw "Syntax error, unrecognized expression: " + (cur || selector); } if ( toString.call(checkSet) === "[object Array]" ) { if ( !prune ...
else if 条件。在本文中我将重点介绍第三种方式 (我更为喜欢的方法)，即使用对象进行快速地查找。