GM addStyle

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The correct title of this article is GM_addStyle. The substitution or omission of an _ is due to technical restrictions.


[edit] Description

This API method adds a string of CSS to the document.

It creates a new <style> element, adds the given CSS to it, and inserts it into the <head>.

Examples | Notes

[edit] Syntax

GM_addStyle( css )

Value: Function
Returns: Nothing
Compatibility: Greasemonkey 0.6.1+
Parameters
Properties
css
  • All properties are optional except css.

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[edit] Properties


[edit] css

Value: String
Usage: css = "body { color:red }";

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[edit] Examples

GM_addStyle("body { color:white; background-color:black } img { border:0 }");

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[edit] Notes

Add !important at the end of the code to override an existing value.

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