29 lines
1019 B
Markdown
29 lines
1019 B
Markdown
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[Home](./index.md) > [puppeteer](./puppeteer.md) > [Coverage](./puppeteer.coverage.md) > [startJSCoverage](./puppeteer.coverage.startjscoverage.md)
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## Coverage.startJSCoverage() method
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<b>Signature:</b>
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```typescript
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startJSCoverage(options?: JSCoverageOptions): Promise<void>;
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```
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## Parameters
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| Parameter | Type | Description |
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| --- | --- | --- |
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| options | [JSCoverageOptions](./puppeteer.jscoverageoptions.md) | Set of configurable options for coverage defaults to <code>resetOnNavigation : true, reportAnonymousScripts : false</code> |
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<b>Returns:</b>
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Promise<void>
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Promise that resolves when coverage is started.
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## Remarks
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Anonymous scripts are ones that don't have an associated url. These are scripts that are dynamically created on the page using `eval` or `new Function`. If `reportAnonymousScripts` is set to `true`, anonymous scripts will have `__puppeteer_evaluation_script__` as their URL.
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