In JavaScript, filtering an array can be done by using the filter() method. This method is used to create a new array with all the elements that pass the condition provided in the callback function. However, what if we want to filter out the values for which the comparator function ... Read More

In JavaScript, a predicate function is a function that returns a Boolean value. In other words, it is a function that tests whether a certain condition is true or false.There are times when we need to negate a predicate function. That is, we need to return the opposite Boolean value.There ... Read More

With the help of HTML, CSS, and JavaScript, it is possible to create a navigation menu with a curved active tab. This can be done by using the ::before and ::after pseudo-elements to create the desired shape, and then using JavaScript to add the active class to the element. HTML ... Read More

The Fullscreen API is a browser API that allows developers to request fullscreen display from the user, and to exit fullscreen when desired. Using the Fullscreen API is relatively simple. First, you must check if the browser you are using supports the Fullscreen API. You can do this by checking ... Read More

Cookies are small pieces of data that are sent from a website to a user's web browser. They are used to store information about the user, such as their preferences or login status. When a user visits a website, their web browser will send a request to the server. The ... Read More

In this tutorial, we will learn how to generate a random birthday wish using JavaScript. We will use the Math.random() method to generate a random number between 1 and 10. This number will be used to select a birthday wish from an array of wishes. The Math.random() Method The Math.random() ... Read More

In programming, shadowing occurs when a variable declared in a certain scope (e.g. a local variable) has the same name as a variable in an outer scope (e.g. a global variable). When this happens, the outer variable is said to be shadowed by the inner variable. In JavaScript, variables can ... Read More

An infix to Postfix converter is a tool that converts an infix expression to a postfix expression. In this tutorial, we will build the infix to postfix converter using JavaScript. What is an infix expression? Infix expression is an expression in which the operators are between the operands. For example, ... Read More

In this tutorial, we'll be implementing a queue using only two stacks. This is a pretty common interview question so it's good to know how to do it. Algorithm STEP 1 − We have two stacks, one for enqueueing and one for dequeueing. STEP 2 − We enqueue by ... Read More

JavaScript has a built-in function called replace() that can be used to replace characters in a string. This function takes two arguments: the first argument is the character or characters to be replaced, and the second argument is the character or characters to replace them with. Syntax Following is the ... Read More