// Implement your code here } Sample Answer JavaScript array coding questions JavaScript array coding interview questions are technical questions asked to gauge candidates’ ability to work with arrays along with their familiarity with fundamental data structures. ...
var foo = function(){ // Some code }; function bar(){ // Some code }; foo的定义是在运行时。想系统说明这个问题,我们要引入变量提升的这一概念。 我们可以运行下如下代码看看结果。 console.log(foo) console.log(bar) var foo = function(){ // Some code }; function bar(){ // Some code...
Here are 10 experience and background questions: Have you used JavaScript before? If so, what did you use it for? What is implicit type coercion in JavaScript? How would you separate code into new lines? What interactive elements have you added to a web page using JavaScript? Which ...
题目来自25 Essential JavaScript Interview Questions。闲来无事,正好切一下。 一 What is a potential pitfall with usingtypeof bar === "object"to determine if bar is an object? How can this pitfall be avoided? 老生常谈的问题,用typeof是否能准确判断一个对象变量,答案是否定的,null的结果也是 objec...
What will the code below output to the console and why? var myObject = { foo: "bar", func: function() { var self = this; console.log("outer func: this.foo = " + this.foo); console.log("outer func: self.foo = " + self.foo); (function() { console.log("inner func: this...
Front End Interview Handbook is part of GreatFrontEnd! Find the latest version of this page on GreatFrontEnd.These are the front-end version of LeetCode questions, but with less emphasis on complicated algorithms and more focus on practical use cases. However, they can also be questions simply...
(function($) {/* jQuery plugin code referencing $ */} )(jQuery); 5.在JavaScript源文件的开头包含use strict有什么意义和好处? 对于这个问题,既简要又最重要的答案是,use strict是一种在JavaScript代码运行时自动实行更严格解析和错误处理的方法。那些被忽略或默默失败了的代码错误,会产生错误或抛出异常。通常...
这个题我在 codewars 上碰到过，并收录了一些不错的解决方式，可以戳这里：Palindrome For Your Dome 12、写一个按照下面方式调用都能正常工作的 sum 方法 console.log(sum(2,3)); // Outputs 5console.log(sum(2)(3)); // Outputs 5 针对这个题，可以判断参数个数来实现：function sum() { var...
} 注:译文链接:http://www.codeceo.com/article/25-essential-javascript-interview-questions.html,英文原文:25 Essential JavaScript Interview Questions,翻译作者:码农网– 小峰,转载请注明出处。做一只勤劳的IT干货搬运工,喜欢就给个赞呗。
console.log(foo) console.log(bar) var foo = function(){ // Some code }; function bar(){ // Some code }; 输出为 undefined function bar(){ // Some code }; 为什么那?为什么 foo 打印出来是 undefined,而 bar打印出来却是函数? JavaScript在执行时,会将变量提升。 所以上面代码JavaScript 引...