Dive into the world of JavaScript – the dynamic scripting language revolutionizing web development. Uncover its versatility, agility, and essential role in creating interactive and seamless online experiences.
let keyword was introduced in the ES6. Main difference is scoping rules. Variables declared by var keyword are scoped to the immediate function body (hence the function scope) while let variables are scoped to the immediate enclosing block denoted by { } (hence the block scope). The reason why let keyword was…
If you are developer then you must know that looping array is a common code practice and frequently used in code. Every web developers must be expert in different kind of the loop through all the entries in an array. Below are some most used code practice for looping arrays….
Example java script code to remove a property from a JavaScript object.
Find out the difference between the var functionOne = function() {} AND function functionTwo() { } The difference is that functionOne is a function expression and so only defined when that line is reached, whereas functionTwo is a function declaration and is defined as soon as its surrounding function or script is executed For…
Example code to find out if a string contains a substring in JavaScript. It can be achieved through ECMAScript 6 introduced String.prototype.includes in ECMAScript 5 or older environments use String.prototype.indexOf, which returns -1 when a substring does not exist.
Java script closures is very important topic for any JavaScript developer.It is widely used in any JavaScript based framework. Closures in JavaScript is an inner function in a outer function, which have access to its outer function scopes. Outer function encapsulating the data, privacy and organization using the closures. A…
We can use window.location.replace(…) as well as window.location.href to perform the redirection. replace() does not keep the originating page in the session history, meaning the user won’t get stuck in a never-ending back-button fiasco. When to use: If you want to simulate an HTTP redirect, use location.replace If you want to simulate…
This is the concept usually asked in the JavaScript interviews, but mostly developers does not give the answers, As its uncommon to use in the programming. Strict Mode is a new feature in ECMAScript 5 that allows you to place a program, or a function, in a “strict” operating context….
Removing and adding item / element in a array is very common thing by a JavaScript developer. Here we have the Fastest Way to Remove a Specific Item from an Array. Below the JavaScript Program to Remove Specific Item From an Array. Example: we have an array [25, 51, 19]…
Deep cloning of any object is very common coding practice for any developer. Java script developers use the cloning everyday in their coding. Here I am going to elaborate the most efficient way to deep clone an object in JavaScript. Cloning with JSON.parse/JSON.stringify This method is not secure as could…
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For professionals employed as full-stack developers or backend developers, acquiring proficiency in Node.js has become imperative. Being well-versed in Node.js is now a crucial skill for anyone in these roles. Prioritizing the preparation of node.js and responses is essential for success in interviews across the industry. The categorization of Node.js…
Redux is a predictable state container for JavaScript apps. It helps you write applications that behave consistently, run in different environments (client, server, and native), and are easy to test. Redux can be used with any library. It’s a popular library for managing state in React apps. It can offer…