javascript add class to element

Swapping out our Syntax Highlighter. It will toggle it. The classList property is read-only, however, you can modify it by using the add() and remove() methods.

How can I select an element with multiple classes in jQuery? 2.

How to Check if an Array Contains a Value in Javascript, How to Check If a Variable is an Array in JavaScript, How to Replace All Occurrences of a Substring in a String, How to Check if Two Strings are Equal in JavaScript, 3 Ways to Check If a Property Exists in an Object, Top 3 Practical Ways to Perform Javascript String Concatenation. In JavaScript, there are some approaches to add a class to an element. What is the mean absolute difference between values in a normal distribution? By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. The Element.classList is a read-only property that returns a live DOMTokenList collection of the class attributes of the element. Tip: To add more than one class, separate the class names with spaces. To add a class to an element, you use the classList property of the element.

Syntax: element.className += "newClass"; Example: This example uses .className property to add class name.

https://developer.mozilla.org/en-US/docs/Web/API/Element/classList, I wrote a JavaScript-only function that checks if the class exists before adding it to the element. How do I copy to the clipboard in JavaScript? The class name attribute can be used by CSS and JavaScript to perform certain tasks for elements with the specified class name. To add a class to an element, you use the classList property of the element. We can use the .className property or the .add () method to add a class name to the particular element. As you can see, it’s pretty simple stuff! This doesn't solve the problem. The other way is by adding or removing class values from an element which may result in certain style rules getting applied or ignored.

And it sets the font style to italic. The example of using the .className property is given as follows.. To add the box class to the