210 lines
14 KiB
Markdown
210 lines
14 KiB
Markdown
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# Puppeteer API
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- [class: Browser](#class-browser)
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- [new Browser([options])](#new-browseroptions)
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- [browser.newPage()](#browsernewpage)
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- [browser.closePage()](#browserclosepage)
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- [browser.version()](#browserversion)
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- [browser.close()](#browserclose)
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- [class: Page](#class-page)
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- [page.setBlockedURLs(patterns)](#pagesetblockedurlspatterns)
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- [page.addScriptTag(url)](#pageaddscripttagurl)
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- [page.injectFile(filePath)](#pageinjectfilefilepath)
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- [page.setInPageCallback(name, callback)](#pagesetinpagecallbackname-callback)
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- [page.setExtraHTTPHeaders(headers)](#pagesetextrahttpheadersheaders)
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- [page.extraHTTPHeaders()](#pageextrahttpheaders)
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- [page.setUserAgentOverride(userAgent)](#pagesetuseragentoverrideuseragent)
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- [page.userAgentOverride()](#pageuseragentoverride)
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- [page.handleDialog(accept, promptText)](#pagehandledialogaccept-prompttext)
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- [page.url()](#pageurl)
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- [page.setContent(html)](#pagesetcontenthtml)
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- [page.navigate(url)](#pagenavigateurl)
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- [page.setSize(size)](#pagesetsizesize)
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- [page.size()](#pagesize)
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- [page.evaluate(fun, args)](#pageevaluatefun-args)
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- [page.evaluateAsync(fun, args)](#pageevaluateasyncfun-args)
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- [page.evaluateOnInitialized(fun, args)](#pageevaluateoninitializedfun-args)
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- [page.screenshot(type[, clipRect])](#pagescreenshottype-cliprect)
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- [page.saveScreenshot(filePath[, clipRect])](#pagesavescreenshotfilepath-cliprect)
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- [page.printToPDF(filePath[, options])](#pageprinttopdffilepath-options)
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- [page.plainText()](#pageplaintext)
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- [page.title()](#pagetitle)
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- [page.close()](#pageclose)
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### class: Browser
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Browser manages a browser instance, creating it with a predefined
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settings, opening and closing pages. Instantiating Browser class does
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not necessarily result in launching browser; the instance will be launched when the need will arise.
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#### new Browser([options])
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- `options` [<Object>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object) Set of configurable options to set on the browser. Can have the following fields:
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- `headless` [<boolean>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type) Wether to run chromium in headless mode. Defaults to `true`.
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- `remoteDebuggingPort` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) Specify a remote debugging port to open on chromium instance. Defaults to `9229`.
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- `executablePath` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Path to a chromium executable to run instead of bundled chromium.
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- `args` [<Array>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array) Additional arguments to pass to the chromium instance. List of chromium flags could be found [here](http://peter.sh/experiments/chromium-command-line-switches/).
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#### browser.newPage()
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- returns: [<Promise<Page>>](http://todo)
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Create a new page in browser and returns a promise which gets resolved with a Page object.
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#### browser.closePage()
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise)
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#### browser.version()
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- returns: [<Promise<string>>]((https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type))
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#### browser.close()
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Closes chromium application with all the pages (if any were opened). The browser object itself is considered to be disposed and could not be used anymore.
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### class: Page
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Page provides interface to interact with a tab in a browser. Pages are created by browser:
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```javascript
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var browser = new Browser();
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browser.newPage().then(page => {
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...
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});
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```
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Pages could be closed by `page.close()` method.
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#### page.setBlockedURLs(patterns)
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- `patterns` [<Array>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves when blocked URLs have been successfully set.
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#### page.addScriptTag(url)
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- `url` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Url of a script to be added
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves as the script gets added and loads.
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#### page.injectFile(filePath)
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- `url` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Path to the javascript file to be injected into page.
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves when file gets successfully evaluated in page.
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#### page.setInPageCallback(name, callback)
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- `url` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Name of the callback to be assigned on window object
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- `callback` [<Function>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function) Callback function which will be called in node.js
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves when callback is successfully initialized
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#### page.setExtraHTTPHeaders(headers)
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- `headers` [<Object>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object) Key-value set of additional http headers to be sent with every request.
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves when additional headers are installed
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#### page.extraHTTPHeaders()
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- returns: [<Object>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object) Key-value set of additional http headers, which will be sent with every request.
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#### page.setUserAgentOverride(userAgent)
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- `userAgent` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Specific user agent to use in this page
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves when the user agent is set.
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#### page.userAgentOverride()
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- returns: [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Returns user agent override, if any.
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#### page.handleDialog(accept, promptText)
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- `accept` [<boolean>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type) Wether accept or discard the dialog.
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- `promptText` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Optional text to put inside the text prompt.
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves when the dialog is handled.
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#### page.url()
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- returns: [<Promise<string>>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Promise which resolves with the current page url.
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#### page.setContent(html)
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- `html` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) HTML markup to assign to the page.
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves when the content is successfully assigned.
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#### page.navigate(url)
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- `url` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) URL to navigate page to
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- returns: [<Promise<boolean>>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type) Promise which resolves when the page is navigated. The promise resolves to:
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- `true` if the navigation succeeds and page's `load` event is fired.
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- `false` if the navigation fails due to bad URL or SSL errors.
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#### page.setSize(size)
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- `size` [<Object>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object) An object with two fields:
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- `width` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) Specify page's width in pixels.
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- `height` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) Specify page's height in pixels.
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves when the dimensions are updated.
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#### page.size()
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- returns: [<Object>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object) An object with two fields:
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- `width` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) Page's width in pixels.
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- `height` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) Page's height in pixels.
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#### page.evaluate(fun, args)
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- `fun` [<Function>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function) Function to be evaluated in browser context
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- `args` [<Array>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array) Arguments to pass to `fun`
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- returns: [<Promise<Object>>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves to function return value
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#### page.evaluateAsync(fun, args)
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- `fun` [<Function>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function) Function to be evaluated in browser context
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- `args` [<Array>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array) Arguments to pass to `fun`
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- returns: [<Promise<Object>>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves to function
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#### page.evaluateOnInitialized(fun, args)
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- `fun` [<Function>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function) Function to be evaluated in browser context
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- `args` [<Array>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array) Arguments to pass to `fun`
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- returns: [<Promise<Object>>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves to function
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#### page.screenshot(type[, clipRect])
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- `type` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Specify screenshot type, could be either `jpeg` or `png`.
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- `clipRect` [<Object>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object) An object which specifies clipping region of the page. Should have the following fields:
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- `x` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) x-coordinate of top-left corner of clip area
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- `y` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) y-coordinate of top-left corner of clip area
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- `width` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) width of clipping area
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- `height` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) height of clipping area
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- returns: [<Promise<Buffer>>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves to buffer with captured screenshot
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#### page.saveScreenshot(filePath[, clipRect])
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- `filePath` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) The file path to save image to. The screenshot type will be inferred from file extension
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- `clipRect` [<Object>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object) Clip rect object which will be passed over to `page.screenshot` method.
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#### page.printToPDF(filePath[, options])
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- `filePath` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) The file path to save image to. The screenshot type will be inferred from file extension
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- `options` [<Object>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object) Options object which might have the following properties:
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- `scale` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type)
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- `displayHeaderFooter` [<boolean>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type)
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- `printBackground` [<boolean>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type)
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- `landscape` [<boolean>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type)
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- `pageRanges` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type)
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- `format` [<string>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type)
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- `width` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type)
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- `height` [<number>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type)
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- returns: [<Promise>](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise) Promise which resolves when the PDF is saved.
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#### page.plainText()
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- returns: [<Promise<string>>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Returns page's inner text.
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#### page.title()
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- returns: [<Promise<string>>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Returns page's title.
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#### page.close()
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- returns: [<Promise>](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) Returns promise which resolves when page gets closed.
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