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showing results for - "change class javascript"
Enrico
14 Feb 2017
1document.getElementById("myElementID").classList.add('myClassName');
2document.getElementById("myElementID").classList.remove('myClassName');
Scotty
16 Nov 2017
1document.getElementById("MyElement").classList.add('MyClass');
2
3document.getElementById("MyElement").classList.remove('MyClass');
4
5if ( document.getElementById("MyElement").classList.contains('MyClass') )
6{
7document.getElementById("MyElement").classList.toggle('MyClass');
8}
Juan José
04 Feb 2017
1//Overwrite all classes
2element.className = "class";
3
4//Add class
5element.classList.add("class");
Jerry
26 Jul 2018
1Syntax:
2document.getElementById('myElement').className = "myclass";
3
4<html> 
5    <head> 
6        <title>Change class of an element with javascript</title> 
7        <style type="text/css"> 
8            .redbutton{ 
9                background-color: red; 
10            } 
11            .greenbutton{ 
12                background-color: green; 
13            } 
14        </style> 
15        <script type="text/javascript"> 
16            function changeClass() { 
17                document.getElementById('clickme').className = "greenbutton"; 
18                var new_class = document.getElementById('clickme').className; 
19                document.getElementById('classChange').innerHTML = "New Class Name : "  
20                + new_class; 
21            } 
22        </script> 
23    </head> 
24    <body> 
25        <button class="redbutton" id="clickme" onclick="changeClass()" 
26                    >Change Class</button><br> 
27        <p id="classChange">Class Name: redbutton</p> 
28    </body> 
29</html>
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