To prevent forms from being submitted, we can use the onsubmit property. We can also use the event.preventDefault() method − Prevent buttons from submitting forms using the onsubmit property Prevent buttons from submitting forms using event.preventDefault() Prevent buttons from submitting forms using the onsubmit property We can prevent form from submitting using the onsubmit property as shown below − We have returned false above in the tag itself to prevent form from submitting. Example Let us see the complete example − doctype html> Details ... Read More

In this tutorial, we are going to learn how can we get the length of a string in bytes in JavaScript. Before going into this we should what a byte is. A byte is a unit of data that is 8 binary bits long i.e., 1 byte can hold up to 8 bits of binary data. A byte is a unit most computers use to represent a character such as a letter, number, or typographic symbol. Some examples of strings and their length in bytes are given − Input "Tutorials Point" Output 15 bytes Input 20€ Output 5 bytes Input ... Read More

In this tutorial, we are going to find all the elements present in the given array except the first element using JavaScript. Here we will create one array and using JavaScript will print all the elements on the HTML page leaving the first element. There are mainly two approaches we can use to do the above task. Both the methods are given as − Approach 1: By using the slice() Method The slice() method is a JavaScript method that is used to slice out the required amount of elements from the array. Syntax The following syntax can be used with ... Read More

In this tutorial, we are going to learn how can we find every element that exists in any of the two given arrays once means we need to take two arrays filled with some elements and then from those two arrays create a new array which contains all the elements present in both the array once i.e., no element should be repeated in the new array created. For example, we take two arrays and find every element that exists in any of the two arrays once Input const arr1 = [1, 2, 3, 4, 5] const arr2 = [1, 4, ... Read More

In this tutorial, we are going to learn how to find the binomial coefficient of two integers using JavaScript. Before learning it we should know what binomial coefficient is and what it refers to. What are Binomial Coefficients? Binomial coefficients refer to the positive integers that occur as coefficients in the binomial theorem. A binomial coefficient C(n, k) can be defined as the coefficient of x^k in the expansion of (1 + x)^n. A binomial coefficient of two numbers n and k signifies the number of combinations of r items that can be selected from a set of n items. ... Read More

Unary operators are the simplest operators in JavaScript which works on one value, or we can say on one operand. There are mainly six kinds of unary operators in JavaScript which are given as − Unary Plus Unary Minus Increment operator (Prefix) Increment operator (Postfix) Decrement operator (Prefix) Decrement operator (Postfix) In this tutorial, we are going to learn about the unary plus (+) operator. To use the unary plus operator we just need to put a plus sign in front of the operand. This operator is basically used to convert a non-numeric value to a numeric value, ... Read More

In this tutorial, we are going to build the famous hit the mouse game using HTML, CSS, and vanilla JavaScript. Many of you wondering what is Vanilla JavaScript, it is nothing just plain JavaScript written without the use of any libraries. In the hit the mouse game, the player needs to hit the mouse with the hammer in order to earn points and win the game. Approach To design the mouse game, we need to write the code IN HTML, CSS, and JavaScript. Step 1 − Firstly, let us look into the HTML part of the code; in this part, ... Read More

A Pong game is a two-player paddle game where each player’s task is to save the ball from hitting the wall. Whenever player 1 hits the ball at the opponent’s wall then player one will receive a point, and similarly, player 2 will get a point if he/she hits the ball at the opponent’s wall. In this tutorial, we will create a Pong Game in JavaScript. Approach To make the pong game using JavaScript we need to write code in HTML, CSS, and JavaScript. We have written certain functions in JavaScript to build the Pong game which is defined below ... Read More

To apply CSS to iframe, is a very simple process. We can add CSS to iframe using all the three methods of adding CSS to any document. We will be understanding three approaches to apply CSS to iframe which are by using inline CSS, internal CSS and external CSS. In this article we are having an iframe, our task is to apply CSS to iframe. We will be understanding each approach with stepwise explaination and example codes. Approaches to Apply CSS to iframe Here is a list of approaches to apply CSS to iframe which we will be discussing in ... Read More

The tables can be used to create and structurize forms in HTML. But, before that let us see how to create a form in HTML. Create a Form in HTML Example Let us see how to create a form using the tags. We have set three input type radio with individual labels − DOCTYPE html> HTML Form Details Select the subject you want to choose: ... Read More