Style fontSize attribute

Definition and usage

fontSize Set or return the font size of the text.

See also:

CSS Tutorial:CSS skrift

CSS Reference Manual:font-size attribute

HTML DOM Reference Manual:font attribute

Instance

Example 1

Set the font size of the <p> element to "xx-large":

document.getElementById("myP").style.fontSize = "xx-large";

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Example 2

Demonstration of possible values:

var listValue = selectTag.options[selectTag.selectedIndex].text;
document.getElementById("myP").style.fontSize = listValue;

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Example 3

Return the font size of the <p> element:

alert(document.getElementById("myP").style.fontSize);

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Syntax

Return fontSize property:

object.style.fontSize

Set fontSize property:

object.style.fontSize = "value|initial|inherit"

Attribute value

Value Description
  • xx-small
  • x-small
  • small
  • medium
  • large
  • x-large
  • xx-large
 Set the font size to a different fixed size, from xx-small to xx-large.
smaller Decrease the font size by a relative unit.
larger Increase the font size by a relative unit.
length Define the font size using length units.
% Set the font size to a percentage of the parent element's font size.
initial Set this property to its default value. See initial.
inherit Inherit this property from its parent element. See inherit.

Technical details

Default value: medium
Return value: String that represents the font size of the element's text.
CSS version: CSS1

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