Example
Set the font size for a <p> element to "xx-large":
document.getElementById("myP").style.fontSize = "xx-large";Try it Yourself »
Definition and Usage
The fontSize property sets or returns the font size of the text.
Browser Support
The fontSize property is supported in all major browsers.
Syntax
Return the fontSize property:
object.style.fontSize
Set the fontSize property:
object.style.fontSize="value|initial|inherit"
Property Values
| 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 |
| initial | Sets this property to its default value. Read about initial |
| inherit | Inherits this property from its parent element. Read about inherit |
Technical Details
| Default Value: | medium |
|---|---|
| Return Value: | A String, representing the font size of the text in the element |
| CSS Version | CSS1 |
More Examples
Example
A demonstration of possible values:
var listValue = selectTag.options[selectTag.selectedIndex].text;
document.getElementById("myP").style.fontSize = listValue;
Try it Yourself »
Example
Return the font size of a <p> element:
alert(document.getElementById("myP").style.fontSize);
Try it Yourself »
Related Pages
CSS tutorial: CSS Font
CSS reference: font-size property
HTML DOM reference: font property
< Style Object