JavaScript Interview Questions for Freshers 1. What are the different data types present in javascript? To know the type of a JavaScript variable, we can use the typeof operator. 1. Primitive types String - It represents a series of characters and is written with quotes. A string can be ...
Write a jQuery plugin to display a list of images in a Lightbox. What do you think of these questions? Fair? Related: “Advanced JavaScript Interview Questions“ “Commonly asked JavaScript interview questions“ Comments: TiTiJune 7th, 2011 at 9:46 pm #1. ECMAScript = Define various detailled...
The jQuery website defines jQuery (jQ) as “a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development.”. jQuery is not a programming language instead, it is a cross-platform JavaScript library. There ...
(function($) { //代码 } )(jQuery);5、在严格模式 use strict 下进行 JavaScript 开发有神马好处？消除Javascript语法的一些不合理、不严谨之处，减少一些怪异行为;消除代码运行的一些不安全之处，保证代码运行的安全；提高编译器效率，增加运行速度；为未来新版本的Javascript做好铺垫。6、下面两个函数的返回...
Or in JQuery we can say: console.log((demo !== null) && (typeof demo === "object") && (! $.isArray(demo))); Typeof JavaScript Interview Question #2 Q: What’s the output of the code below in the console log? Why? (function(){ var x = y = 7; })(); console.log("x...
What is the significance of, and reason for, wrapping the entire content of a JavaScript source file in a function block? 为什么要用 IIFE? 简单来说就是为了能模块化,创建私有变量等等,很多类库(比如 jQuery)都用了这样的写法。 可以参考我以前翻译的一篇文章详解javascript立即执行函数表达式(IIFE) ...
These JavaScript Interview Questions have been specially created to familiarize you with the nature of questions you may encounter during your interview. These questions are curated by analyzing recently asked JavaScript questions from different companies' interviews....
What is the significance of, and reason for, wrapping the entire content of a JavaScript source file in a function block? 为什么要用 IIFE? 简单来说就是为了能模块化,创建私有变量等等,很多类库(比如 jQuery)都用了这样的写法。 可以参考我以前翻译的一篇文章详解javascript立即执行函数表达式(IIFE) ...
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includes thousands of objective-type interview questions on JavaScript Programming Language. It includes the MCQs interview questions on fundamentals of JavaScript, client-side JavaScript, JavaScript window objects, scripting documents in JavaScript, and handling events in client-side JavaScript and jQuery ...