1. forEach() Function The forEach() method is used to execute a provided function once for each element in an array. It does not return a new array; it simply iterates over the array. Syntax: array.forEach(callback(currentValue, index, array)); cal...
The try-catch statement in JavaScript allows you to handle errors gracefully. It consists of two main blocks: try block: Contains code that may throw an error. catch block: Executes if an error is thrown in the try block. It catches the error and h...
A callback function is a function that is passed as an argument to another function and is executed after some operation or event occurs. This is a common pattern in JavaScript for handling asynchronous tasks like API requests, event handling, or tim...
Arrow functions are a concise syntax for writing functions in JavaScript, introduced in ES6. They allow for a shorter syntax than traditional function expressions and also provide different behavior for this. Syntax: Arrow functions: Have a shorter...
The this keyword in JavaScript refers to the object that is currently executing the function. The value of this depends on how the function is called and can refer to different objects in different contexts. Behavior of this in Different Contexts: G...
A function in JavaScript is a block of code designed to perform a particular task. It is executed when it is called (or invoked). Functions allow code reuse and can take arguments and return values. function greet() { console.log("Hello, World!")...