Javascript Change Class Name

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The HTML DOM Style Object Syntax Return the className property HTMLElementObject className Set the className property HTMLElementObject className class Property Values Return Value More Examples Get the class attribute of the first div element if any let value document getElementsByTagName div 0 className Try it Yourself getElementsByClassName (class_name) - returns an HTMLCollection which contains HTML elements whose class names are equal to class_name. getElementById (id_name) - returns a single HTML element whose id is equal to id_name. getElementsByTagName (tag_name) - returns an HTMLCollection of elements with a tag tag_name.

Javascript change class name only for one div stack overflow

Javascript Change Class Name Only For One Div Stack Overflow

Javascript Change Class NameThe className property of the Element interface gets and sets the value of the class attribute of the specified element. Value A string variable representing the class or space-separated classes of the current element. Examples js const el = document.getElementById("item"); el.className = el.className === "active" ? "inactive" : "active"; Notes For changing a class of HTML element with onClick use this code input type button onclick addNewClass this value Create and in javascript section function addNewClass elem elem className newClass Online Iman Bahrampour Aug 22 2017 at 4 13 Triynko that link on w3schools has changed looks like in September 2012