Style outlineWidth Property

Style Object Reference Style Object


Change the width of the outline of a <div> element:

document.getElementById("myDiv").style.outlineWidth = "10px";
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Definition and Usage

The outlineWidth property sets or returns the width of the outline around an element.

An outline is a line around an element. It is displayed around the margin of the element. However, it is different from the border property.

The outline is not a part of the element's dimensions, therefore the element's width and height properties do not contain the width of the outline.

Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The outlineWidth property is supported in all major browsers.

Note: The outlineWidth property is not supported in IE7 and earlier. IE8 requires a !DOCTYPE. IE9 and later support it.


Return the outlineWidth property:

Set the outlineWidth property:"thin|medium|thick|length|initial|inherit"

Property Values

Value Description
thin Defines a thin outline
medium Defines a medium outline. This is default
thick Defines a thick outline
length The width of the outline in length units
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 width of an element's outline
CSS Version CSS2

More Examples


Change the width of the outline of a <div> element, using the "thick" value:

document.getElementById("myDiv").style.outlineWidth = "thick";
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Return the width of the outline of a <div> element:

Try it Yourself »

Related Pages

CSS tutorial: CSS Outline

CSS reference: outline property

HTML DOM reference: outline property

Style Object Reference Style Object