addClass Method

Summary

Adds the specified class string to the HTML or SVG element's current class list.

Syntax

JavaScript Syntax
addClass = function( 
   element, 
   className 
)
TypeScript Syntax
static addClass( 
   element: HTMLElement, 
   className: string 
): void;

Parameters

element

HTML or SVG element to add the class to.

className

The class string.

Remarks

AddClass will first internally call HasClass to avoid duplicate work.

Like HasClass and RemoveClass, this method also works with browsers that do not support the HTML element classList property. This method will throw an error if the element is null or undefined.

Requirements

Target Platforms

Help Version 19.0.2017.10.27
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