Explain the differences in the usage of foo between function foo() {} and var fo

In J**aScript, we h**e different ways to define the functions. The function foo() {} and var foo = function() { } is two different ways to define the function. Both ways h**e their benefits and different use cases; however, both give the same result when

2023-01-07
Explain the working of timers in JavaScript

In J**aScript, timers are a very noteworthy feature. As like the normal watch timer, we can start the timer at a time and execute the function or code in J**aScript after a particular time. In simple terms, we can use the timer to execute the code after s

2023-01-07
Explain the different ready states of a request in AJAX

AJAX stands for Asynchronous J**aScript and XML. It is a set of web development techniques to create interactive web applications. AJAX allows a web page to communicate with a server without reloading the page. Ready states are an important part of workin

2023-01-06
Extract a number from a string using JavaScript

In J**aScript, there are multiple ways to extract a number from a string. One way is to use the match() method and a regular expression to search for all numeric digits in the string. Another way is to use the replace() method and a regular expression to

2023-01-06
HTML 框架

框架可以理解为在网页中插入了一个独立的网页窗口元素,比较常用的框架元素是 iframe,iframe 有自己独立的窗口 window 以及上下文,iframe 元素自己内部的逻辑操作可以独立,当然在同域条件下,iframe 元素的窗口可以访问父级窗口,父级窗口也可以访问 iframe 窗口。 iframe

2023-01-06
HTML 链接

本章节介绍 HTML 页面与页面,文档与文档之间的媒介-链接,链接为客户和服务器提供了主要的交互的手段。这是一个比较常见的标签类型,几乎在所有的网站中都能看到它的身影。 1. 样式使用标签<a>设置超文本链接,链接可以是图形或者文字,当鼠标移动到链接上时,会出现一

2023-01-06
ES6+ const

1. 前言 很多情况下,我们希望我们声明的变量不能被修改。在 ES5 中不能直接声明一个常量,如果想声明一个不可修改的变量需要借助 defineProperty 方法。ES6 为了弥补这方面的缺失,新增了 const 语句用于声明一个常量。本节我们还将学习到 let、 const 、 var 的区别。 2. 语

2023-01-05
ES6+ 展开语法

1. 前言 ES6 新增了 ... 的语法糖,主要用于展开语法和剩余语法中,本节先来说说展开语法。展开语法顾名思义可以理解为把整体展开成个体,在 ES5 中如果想把一个数组的内容拷贝到另一个数组中,可以使用 for 循环数组的每一项,然后添加到目标数组中去。但是如果使用展开语法

2023-01-05
What are the pros and cons of using Python in competitive programming?

In this article, we will learn the pros and cons of using Python in competitive programming. Challenges faced by using python in Competitive Coding Competitive coding tasks are typically designed to evaluate programmers' problem-solving skills and data st

2023-01-05
What are the prerequisites for learning a programing language like python?

In this article, we will learn the prerequisites for learning a programing language like python. Python is a high-level, object-oriented, dynamic, interpreted, and multipurpose programming language i.e multi-paradigm language. Python's syntax, dynamic typ

2023-01-05

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