Found 6434 Articles for Javascript

Explain about EventHandler with Examples in JavaScript

Saurabh Anand
Updated on 19-Jan-2023 13:07:07
JavaScript Events, Are you familiar with them? Any action that occurs when we interact with a website is a JavaScript event. These actions include hitting a key on the keyboard, selecting an option in a select box, moving the mouse cursor, and so on. A JavaScript event handler is a function that is called when any of these events fires. In this article, we are going to talk about event handlers, their implementation, and its components with various coded examples. Events You may create JavaScript code that responds to certain conditions using events. Events that come to mind are − ... Read More

Event Firing in JavaScript

Saurabh Anand
Updated on 19-Jan-2023 12:59:18
Events in JavaScript are the actions performed by the browser or the user. Some of the examples of events are − On webpage load On keypress On hover On click, etc. When javascript code is embedded in HTML runs, js reacts to these events and allows the code to run. Whenever these JavaScript codes are executed we call it firing an event. Example Let’s see an easy example to understand the whole concept of event firing, from beginning to end. Click me!! I change number. ... Read More

ES2022 JavaScript at() Method

Saurabh Anand
Updated on 19-Jan-2023 12:56:07
JavaScript is a powerful and versatile programming language that is widely used for both front-end and back-end development. One of the features that makes JavaScript so powerful is its extensive standard library, which includes many built-in methods for working with strings, arrays, and other data types. One such method is the at() method, which was introduced in ECMAScript 2022 and is used to retrieve the character at a given index in a string. In this tutorial, we'll take a look at how to use the at() method, as well as explore some of its advantages over the older charAt() method. ... Read More

ES2015: Latest version of JavaScript

Saurabh Anand
Updated on 19-Jan-2023 13:19:49
ES2015, also known as ECMAScript 6, is the latest version of JavaScript that was officially released in June 2015. It brings a number of new features and improvements to the language, making it easier to write more efficient and maintainable code. In this tutorial, we will take a look at some of the most significant changes and additions that were introduced in ES2015, and how they can be used to write better JavaScript. New Feature: Let and Const Declarations ES2015 introduces two new ways to declare variables: let and const. The let keyword is used to declare variables that can ... Read More

Error: Permission denied to access property ‘target’ in JavaScript

Saurabh Anand
Updated on 19-Jan-2023 12:16:44
"Error − Permission denied to access property 'target'" is a common error message that can occur when working with JavaScript, especially when attempting to access the target property of an event object. This error occurs when a script is trying to access a property or method of an object that it does not have permission to access. In this tutorial, we will discuss the causes of this error and how to fix it. Understanding the Error The "Error − Permission denied to access property 'target'" is typically caused by the use of the target property of an event object in ... Read More

Error.prototype.toString() Method in JavaScript

Saurabh Anand
Updated on 19-Jan-2023 11:55:48
JavaScript is a widely-used programming language known for its flexibility and ease of use. One of the key features of the language is its ability to throw and handle errors. The Error.prototype.toString() method is a built-in method in JavaScript that allows developers to create and manipulate error objects. In this tutorial, we will discuss the basics of this method, including its syntax, usage, and some examples of how it can be used in real-world applications. Error.prototype.toString() Method The Error.prototype.toString() method is a built-in method in the JavaScript language that is used to convert an error object to a string. This ... Read More

How to clear the form after submitting in Javascript without using reset?

Rushi Javiya
Updated on 19-Jan-2023 10:03:42
On the internet, we will find very few websites that don’t contain the form. Most websites contain the contact form, some contain the job application form, and some contain the product order form. The form allows us to take input from users and manipulate it at the front end or backend side of the application. Also, to provide a good user experience to the application user, we need to reset all the form data once the user submits the form. In this tutorial, we will learn various approaches to clear the form's input fields once the user presses the submit ... Read More

How to clear all div’s content inside a parent div in JavaScript?

Rushi Javiya
Updated on 19-Jan-2023 10:01:38
Using JavaScript, we will learn to clear all div’s content inside a parent div. In HTML, we can create various elements and add other elements as a child of the parent div. Also, we can add different HTML to every child element. Sometimes, we may require to clear the HTML of all child elements. So, we will learn different approaches to clear all div’s content inside a parent div. Using the innerHTML property of the HTML element Every HTML element contains the innerHTML property. Developers can use it to set the HTML for any element using ... Read More

How to choose a background color through a color picker in JavaScript?

Rushi Javiya
Updated on 19-Jan-2023 09:57:53
While working with HTML and CSS to create a web page, we require to choose a color from the color picker. Also, sometimes we may require to select the background color through the color picker input. In this tutorial, we will learn different approaches which allow users to choose a background color from the color-picker input, and when the user selects a new color, it should change the background color. Using the color picker to change the background color In HTML, color picker input allows users to choose a color from that. We can get a selected color value using ... Read More

How to check whether an object exists in JavaScript?

Rushi Javiya
Updated on 19-Jan-2023 09:54:11
The object contains the properties and their values in JavaScript. We can create an object using the curly ({}) braces. It’s similar to the variables, but we assign an object value rather than assigning the number, string, or boolean value to the variable. So, here we will learn to check if the object exists in JavaScript in this tutorial. In short, we have to learn ways to check the existence of object variables. Using the try-catch statement Generally, we use the try-catch statement to handle errors in JavaScript. We can try to access the object or its properties in the ... Read More
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