Web Reference: Description The setAttribute() method sets a new value to an attribute. If the attribute does not exist, it is created first. Mar 23, 2026 · setAttribute() sets the value of an attribute on the specified element. If the attribute already exists, the value is updated; otherwise a new attribute is added with the specified name and value. To set the value of a Boolean attribute, such as disabled, you can specify any value. In this tutorial, you will learn how to use the JavaScript setAttribute () method to set a value for an attribute on a specified element.
YouTube Excerpt: If you'd like to modify an attribute of an
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