What is the id Attribute in HTML?
The id attribute specifies a unique id for an HTML element .
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The id value can be used by CSS and JavaScript to perform certain tasks for a unique element with the specified id value.
To select an element in css with a specific id you need to write a hash (#) character followed by the id of the element.
E.g:
| <style> #mycode { background-color: blue; color: White; padding: 30px; text-align: center; } </style> <h1 id="myHeader">My Header</h1> |
HTML element can only have one unique id that belongs to that single element while a class name can be used by multiple elements.
id Attribute in JavaScript
JavaScript can access an element with a specified id by using the getElementById() method.
E.g:
| <script> function displayResult() { document.getElementById("mycode").innerHTML = "Have a nice nice coding"; } |
The id value should contain at least one character and not contain whitespace.
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Ayesha
Tech writer at newsandstory