WEB DEVELOPER SITE
HTMLCSSJAVASCRIPTSQLPHPBOOTSTRAPJQUERYANGULARXML
 

JavaScript HTML DOM - Changing CSS


The HTML DOM permits JavaScript to change the style of HTML elements.


Changing HTML Style

To change the style of a HTML component, utilize this syntax:

document.getElementById(id).style.property=new style

The following precedent changes the style of a <p> element:

Example

<html>
<body>

<p id="p2">Hello World!</p>

<script>
document.getElementById("p2").style.color = "blue";
</script>

<p>The passage above was changed by a script.</p>

</body>
</html>
Try it Yourself »

Using Events

The HTML DOM enables you to execute code when an occasion occurs.

Events are created by the program when "things happen" to HTML elements:

  • An component is clicked on
  • The page has loaded
  • Input fields are changed

You will get familiar with occasions in the following section of this tutorial.

This model changes the style of the HTML component with id="id1", when the client clicks a button:

Example

<!DOCTYPE html>
<html>
<body>

<h1 id="id1">My Heading 1</h1>

<button type="button"
onclick="document.getElementById('id1').style.color = 'red'">
Snap Me!</button>

</body>
</html>
Try it Yourself »

More Examples

Visibility Step by step instructions to make a component imperceptible. Would you like to demonstrate the component or not?


HTML DOM Style Object Reference

For all HTML DOM style properties, take a gander at our total HTML DOM Style Object Reference.