[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [AddScriptToEvaluateOnNewDocumentRequest](./puppeteer.protocol.page.addscripttoevaluateonnewdocumentrequest.md) > [source](./puppeteer.protocol.page.addscripttoevaluateonnewdocumentrequest.source.md) ## Protocol.Page.AddScriptToEvaluateOnNewDocumentRequest.source property Signature: ```typescript source: string; ```