How to call after some delay write program in JavaScript?
You can use the setTimeout function in JavaScript to call a function after a specified amount of time has elapsed. The setTimeout function takes two arguments: a callback function and…
What is scope in JavaScript?
In JavaScript, “scope” refers to the visibility and accessibility of variables, functions, and objects within a specific portion of the code. There are two types of scope in JavaScript: global…
What is hoisting in JavaScript?
Hoisting is a behavior in JavaScript where variable and function declarations are moved to the top of their respective scopes (i.e., global or functional) before the code is executed. This…
What is event capturing and event bubbling in Javascript?
Event capturing and event bubbling are two ways that events can propagate through the HTML DOM (Document Object Model) in JavaScript. You can use the addEventListener method in JavaScript to…
What is setTimeout and setInterval in JavaScript?
setTimeout and setInterval are two functions in JavaScript that allow you to schedule a piece of code to be executed after a specified amount of time has passed. setTimeout is…
What is event looping and eventemitter?
Event looping and EventEmitter are important concepts in JavaScript and Node.js, respectively. Event looping refers to the mechanism in JavaScript that allows the execution of code to be scheduled and…
What is call, apply and bind in JavaScript?
In JavaScript, call, apply, and bind are methods that allow you to invoke a function with a specified this value and arguments. call method: The call method allows you to…
What is closure in JavaScript?
In JavaScript, a closure is a function that has access to variables in its outer scope, even after the outer function has returned. This means that the closure can “remember”…
What is arrow function in javascript?
An arrow function is a concise way of declaring functions in JavaScript. It uses an arrow (=>) to replace the traditional function keyword, and provides a more concise syntax for…
What are the characteristics or attributes of ECMAScript 6 (ES6)?
ECMAScript 6 (ES6), also known as ECMAScript 2015, introduced several new features to JavaScript that make it easier to write complex and maintainable code. Some of the key characteristics or…
What is a difference between var, let and cost?
var, let, and const are all used to declare variables in JavaScript. However, they differ in their scoping and the value they hold: In general, it is recommended to use…
What is lexical scope in JavaScript?
In JavaScript, lexical scope refers to the scoping rules used to determine where variables and functions are accessible within the code. It’s a way of defining the visibility of variables…
What is a difference between TypeScript and JavaScript?
TypeScript and JavaScript are both programming languages that are used to build web applications, but there are some key differences between them: In summary, TypeScript provides additional features and a…