JavaScript Snippets

The console.log() method outputs a message to the web console. Read the tutorial and learn the simplest method of putting a single or multiple styles to it.

Incorrect information leads to bad user interactions. So as to prevent this problem, read and learn how to validate forms with the help of JavaScript!

There are 2 types of JavaScript comments: single-line and multi-line. See when to use them with examples, and also use comments to prevent execution when testing alternative code.

Read this tutorial and learn about how the Access-Control-Allow-Origin response header works. Also, read about CORS, the origin, and non-simple requests.

Read this tutorial and learn about the simplest and fastest method of getting the current year a four-digit number using the Date object in JavaScript.

In the following snippet, we are going to represent how JavaScript closures work. The easiest way of learning how to use them is investigating examples.

In this tutorial, you can find information about the usage of the keyword “this” in JavaScript. Here, it works differently compared with other languages.

In the following tutorial, you can find the answer to one of the most common issues in JavaScript: how to access the correct “this” inside a callback.

Read the tutorial and learn the two suggested methods of creating a JavaScript function that will add a class to the <div> element and solve your problem.

Read this tutorial and learn how you can remove multiple options or a specific option in the select list using some interesting and useful jQuery methods.

Read the tutorial and learn a simple method of adding days to JavaScript date with two inbuilt functions used for setting and getting the day of the month.

To add new elements you can use the following JavaScript functions: push() unshift(), concat() function or splice(). See examples.

Read this tutorial and find useful information about the multiple methods of adding options to a select element using jQuery. Choose the best one for you.

On this page, you can learn the ways of appending an item or multiple items to an array in JavaScript.

If you want to create your own color generator using JavaScript, then you’re welcome to our tutorial. In this snippet, we are going to build a hex color generator step by step.

Read this JavaScript tutorial and learn about the best method of calculating the text width. Read about the advantages of the method over other methods.

Read this JavaScript tutorial and learn the methods and undertake some steps which will help you make the first letter in the string uppercase easily.

Read the tutorial and learn the jQuery method of centering the <div> element on the screen. Get a code snippet to add your script for centering the element.

One of the most common issues in JavaScript is changing an element’s class. In this snippet, we are going to show you the efficient ways of achieving it.

In this tutorial, you will read and learn about jQuery methods that are used to change the selected value of a drop-down list via its text description.

Read this JavaScript tutorial and learn the easy way of changing the href attribute for a hyperlink step by step by using one of the methods of jQuery.

Read this tutorial which will provide you with useful information about the best and easy method that can be used to change the image source using jQuery.

Read the tutorial and learn the right way of checking a radio button with jQuery. Also, read how to handle with different versions of jQuery while checking.

Read this JavaScript tutorial and find a working code for checking whether the webpage is loaded inside an iFrame or directly into the browser window.

In this tutorial, you will read and learn about several JavaScript and jQuery methods for checking and unchecking a checkbox. Choose the best one for you.

Read this tutorial and learn the fastest and simplest way of checking for a hash value in the URL using the window.location.hash method in JavaScript.

In this tutorial, we are going to show you the ways of checking whether the JavaScript string is empty, undefined, or null. Just follow the guidelines.

In this tutorial, you will find several methods that are used to test the existence of the nested JavaScript object keys. Also, find how to avoid TypeError.

This snippet is explaining how to check whether a key exists in a JavaScript object. Examine the solutions given above and choose the most appropriate.

Read this tutorial and learn several methods used to check if a string contains another substring in JavaScript or not. Read information and see examples.