jQuery CSS Method – Jin's Tech Blog
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Java Class Attributes With Examples
javascript - How can I get the value of two attributes and put it in another attribute? - Stack Overflow
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How to Change Element's Class with JavaScript - ClassName and ClassList
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How to add a class to an element using JavaScript - javatpoint
How to Change Element's Class with JavaScript - className and classList
Attributes in Python
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How To Modify Attributes, Classes, and Styles in the DOM | DigitalOcean
Add a class attribute with the value item to the first article element under the Coffee heading - HTML-CSS - The freeCodeCamp Forum
How to Add a Class to an Element Using JavaScript? - Scaler Topics
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html tutorial - class Attribute in HTML - html5 - html code - html form - In 30Sec by Microsoft Award MVP - | wikitechy
How to Get and Modify Element's Attributes, Classes, and Styles through JavaScript
Set multiple Attributes on an Element using JavaScript | bobbyhadz
How To Modify Attributes, Classes, and Styles in the DOM | DigitalOcean
A Complete Guide to Data Attributes | CSS-Tricks - CSS-Tricks
A Complete Guide to Data Attributes | CSS-Tricks - CSS-Tricks
JavaScript setAttribute() - javatpoint
Change an element class JavaScript - GeeksforGeeks
Set/Remove the "required" Attribute using JavaScript | bobbyhadz
