14 lines
744 B
Markdown
14 lines
744 B
Markdown
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<!-- Do not edit this file. It is automatically generated by API Documenter. -->
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[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [CSS](./puppeteer.protocol.css.md) > [CSSStyleSheetHeader](./puppeteer.protocol.css.cssstylesheetheader.md) > [isMutable](./puppeteer.protocol.css.cssstylesheetheader.ismutable.md)
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## Protocol.CSS.CSSStyleSheetHeader.isMutable property
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Whether this stylesheet is mutable. Inline stylesheets become mutable after they have been modified via CSSOM API. <link> element's stylesheets are never mutable. Constructed stylesheets (new CSSStyleSheet()) are mutable immediately after creation.
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<b>Signature:</b>
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```typescript
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isMutable: boolean;
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```
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