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| {{DISPLAYTITLE:GM_addStyle}} | | {{DISPLAYTITLE:GM_addStyle}} |
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| == Description ==
| | As of Greasemonkey 4.0, this method has been removed. |
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| This [[API_reference|API]] method adds a string of CSS to the document.
| | You can `@require` a helper script to provide the same functionality, for example [https://gist.github.com/arantius/eec890c9ce4ff2f7abee896c0bba664d gm-addstyle.js]. |
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| It creates a new <code><style></code> element, adds the given CSS to it, and inserts it into the <code><head></code>.
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| == Syntax ==
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| '''GM_addStyle(''' ''css'' ''')'''
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| :Value: Function
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| :Returns: undefined
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| :Compatibility: [[Version_history#0.6.1|Greasemonkey 0.6.1+]]
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| :{| cellpadding="5" style="border-style:solid; background:#FFFFE0;"
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| |+ Parameters
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| !style="background:#CC9900;"|'''Properties'''
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| |-
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| | <code><span style="background:#FFFFE0;">[[#css |css]]</span></code>
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| |}
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| :* All properties are optional except [[#css|css]].
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| === Properties ===
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| ----
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| ==== <code>css</code> ====
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| :Value: String
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| :Usage: <code>'''css''' = "body { color:red }";</code>
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| == Examples ==
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| {{Samp |1=<pre style="border: none; margin: inherit;">
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| GM_addStyle("body { color: white; background-color: black } img { border: 0 }");
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| </pre>}}
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| Spanned over multiple lines using E4X:
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| {{Good samp |1=<pre style="border: none; margin: inherit;">
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| GM_addStyle(<><![CDATA[
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| body { color: white; background-color: black }
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| img { border: 0 }
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| .footer { width: 875px; }
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| ]]></>.toString()); | |
| </pre>}}
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| Spanned over multiple lines using line continuation character.
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| {{Good samp |1=<pre style="border: none; margin: inherit;">
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| GM_addStyle("body { color: white; background-color: black }\
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| img { border: 0 }\
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| .footer { width: 875px; }");
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| </pre>}}
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| == Notes ==
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| Add <code>!important</code> at the end of the code to override an existing value.
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| [[Category:API_Reference|A]]
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As of Greasemonkey 4.0, this method has been removed.
You can `@require` a helper script to provide the same functionality, for example gm-addstyle.js.
