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Style fontSize Property

Style Object Reference Style Object

Definition and Usage

The fontSize property sets or returns the font size of the text.

Syntax

Set the fontSize property:

Object.style.fontSize="value|inherit"

Return the fontSize property:

Object.style.fontSize

Value Description
xx-small
x-small
small
medium
large
x-large
xx-large		 Sets the size of the font to different fixed sizes, from xx-small to xx-large
smaller Decreases the font-size by one relative unit
larger Increases the font-size by one relative unit
length Defines the font-size in length units
% Sets the font-size to a % of  the parent element's font size
inherit The value of the fontSize property is inherited from parent element

Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The fontSize property is supported in all major browsers.

Example

Example

Change the font size of the text:

<html>
<head>
<script type="text/javascript">
function displayResult()
{
document.getElementById("p1").style.fontSize="xx-large";
}
</script>
</head>
<body>

<p id="p1">This is some text.</p>
<br />

<button type="button" onclick="displayResult()">Change font size</button>

</body>
</html>

Try it yourself »

Style Object Reference Style Object
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