How to use doExposeBinding method in Playwright Internal

Best JavaScript code snippet using playwright-internal

crBrowser.js

Source:crBrowser.js

...399  }400  async doRemoveInitScripts() {401    for (const page of this.pages()) await page._delegate.removeInitScripts();402  }403  async doExposeBinding(binding) {404    for (const page of this.pages()) await page._delegate.exposeBinding(binding);405  }406  async doRemoveExposedBindings() {407    for (const page of this.pages()) await page._delegate.removeExposedBindings();408  }409  async doUpdateRequestInterception() {410    for (const page of this.pages()) await page._delegate.updateRequestInterception();411  }412  async doClose() {413    (0, _utils.assert)(this._browserContextId); // Headful chrome cannot dispose browser context with opened 'beforeunload'414    // dialogs, so we should close all that are currently opened.415    // We also won't get new ones since `Target.disposeBrowserContext` does not trigger416    // beforeunload.417    const openedBeforeUnloadDialogs = [];...

browserContext.js

Source:browserContext.js

...134      if (page.getBinding(name)) throw new Error(`Function "${name}" has been already registered in one of the pages`);135    }136    const binding = new _page.PageBinding(name, playwrightBinding, needsHandle);137    this._pageBindings.set(name, binding);138    await this.doExposeBinding(binding);139  }140  async removeExposedBindings() {141    this._pageBindings.clear();142    await this.doRemoveExposedBindings();143  }144  async grantPermissions(permissions, origin) {145    let resolvedOrigin = '*';146    if (origin) {147      const url = new URL(origin);148      resolvedOrigin = url.origin;149    }150    const existing = new Set(this._permissions.get(resolvedOrigin) || []);151    permissions.forEach(p => existing.add(p));152    const list = [...existing.values()];...

ffBrowser.js

Source:ffBrowser.js

...339      browserContextId: this._browserContextId,340      scripts: []341    });342  }343  async doExposeBinding(binding) {344    await this._browser._connection.send('Browser.addBinding', {345      browserContextId: this._browserContextId,346      name: binding.name,347      script: binding.source348    });349  }350  async doRemoveExposedBindings() {// TODO: implement me.351  }352  async doUpdateRequestInterception() {353    await this._browser._connection.send('Browser.setRequestInterception', {354      browserContextId: this._browserContextId,355      enabled: !!this._requestInterceptor356    });357  }...

wkBrowser.js

Source:wkBrowser.js

...268  }269  async doRemoveInitScripts() {270    for (const page of this.pages()) await page._delegate._updateBootstrapScript();271  }272  async doExposeBinding(binding) {273    for (const page of this.pages()) await page._delegate.exposeBinding(binding);274  }275  async doRemoveExposedBindings() {276    for (const page of this.pages()) await page._delegate.removeExposedBindings();277  }278  async doUpdateRequestInterception() {279    for (const page of this.pages()) await page._delegate.updateRequestInterception();280  }281  onClosePersistent() {}282  async doClose() {283    (0, _utils.assert)(this._browserContextId);284    await this._browser._browserSession.send('Playwright.deleteContext', {285      browserContextId: this._browserContextId286    });...

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  for (const browserType of ['chromium', 'firefox', 'webkit']) {4    const browser = await playwright[browserType].launch();5    const context = await browser.newContext();6    const page = await context.newPage();7    await page.exposeBinding('myBinding', (source, ...args) => {8      return {source, args};9    });10    const result = await page.evaluate(async ({name}) => {11      return await window.myBinding('test', {name});12    }, {name: 'John Doe'});13    console.log(result);14    await browser.close();15  }16})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.exposeBinding('log', (source, ...args) => {7    console.log('log called with', ...args);8  });9  await page.evaluate(() => {10    window.log('hello', 'world');11  });12  await browser.close();13})();

Using AI Code Generation

1const { doExposeBinding } = require('playwright/lib/server/frames');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await doExposeBinding(page.mainFrame(), 'myBinding', (source, ...args) => {8    console.log('myBinding called', source, args);9  });10  await page.evaluate(() => {11    window['myBinding']('fromEvaluate', 1, 2, 3);12  });13  await browser.close();14})();15import { doExposeBinding } from 'playwright/lib/server/frames';16import { chromium } from 'playwright';17(async () => {18  const browser = await chromium.launch();19  const context = await browser.newContext();20  const page = await context.newPage();21  await doExposeBinding(page.mainFrame(), 'myBinding', (source, ...args) => {22    console.log('myBinding called', source, args);23  });24  await page.evaluate(() => {25    window['myBinding']('fromEvaluate', 1, 2, 3);26  });27  await browser.close();28})();29const { doExposeBinding } = require('playwright/lib/server/frames');30const { chromium } = require('playwright');31(async () => {32  const browser = await chromium.launch();33  const context = await browser.newContext();34  const page = await context.newPage();35  await doExposeBinding(page.mainFrame(), 'myBinding', (source, ...args) => {36    console.log('myBinding called', source, args);37  });38  await page.evaluate(() => {39    window['myBinding']('fromEvaluate', 1, 2, 3);40  });41  await browser.close();42})();

Using AI Code Generation

1const playwright = require('playwright');2const { doExposeBinding } = require('playwright/lib/server/browserContext');3const browser = await playwright.chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6await doExposeBinding(page, 'myBinding', (source, ...args) => {7  console.log('myBinding called with', ...args);8});9await page.evaluate(async () => {10  await window['myBinding']('arg1', 'arg2');11});12await browser.close();

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch();4  const page = await browser.newPage();5  const context = page.context();6  context._doExposeBinding('myBinding', (source, ...args) => {7    console.log('myBinding called from:', source);8    console.log('myBinding arguments:', args);9    return 'myBinding return value';10  });11  await page.exposeFunction('myFunction', (source, ...args) => {12    console.log('myFunction called from:', source);13    console.log('myFunction arguments:', args);14    return 'myFunction return value';15  });16  await page.evaluate(async () => {17    const myBinding = await window['myBinding'];18    console.log('myBinding result:', myBinding('myBinding argument'));19    const myFunction = await window['myFunction'];20    console.log('myFunction result:', myFunction('myFunction argument'));21  });22  await browser.close();23})();

Using AI Code Generation

1const { doExposeBinding } = require('playwright/lib/server/browserContext');2const { Page } = require('playwright/lib/server/page');3const { JSHandle } = require('playwright/lib/server/jsHandle');4const { ElementHandle } = require('playwright/lib/server/elementHandler');5const { Frame } = require('playwright/lib/server/frame');6doExposeBinding(Page.prototype);7doExposeBinding(JSHandle.prototype);8doExposeBinding(ElementHandle.prototype);9doExposeBinding(Frame.prototype);10const { doExposeBinding } = require('playwright/lib/server/browserContext');11const { Page } = require('playwright/lib/server/page');12const { JSHandle } = require('playwright/lib/server/jsHandle');13const { ElementHandle } = require('playwright/lib/server/elementHandler');14const { Frame } = require('playwright/lib/server/frame');15doExposeBinding(Page.prototype);16doExposeBinding(JSHandle.prototype);17doExposeBinding(ElementHandle.prototype);18doExposeBinding(Frame.prototype);19const { doExposeBinding } = require('playwright/lib/server/browserContext');20const { Page } = require('playwright/lib/server/page');21const { JSHandle } = require('playwright/lib/server/jsHandle');22const { ElementHandle } = require('playwright/lib/server/elementHandler');23const { Frame } = require('playwright/lib/server/frame');24doExposeBinding(Page.prototype);25doExposeBinding(JSHandle.prototype);26doExposeBinding(ElementHandle.prototype);27doExposeBinding(Frame.prototype);28const { doExposeBinding } = require('playwright/lib/server/browserContext');29const { Page } = require('playwright/lib/server/page');30const { JSHandle } = require('playwright/lib/server/jsHandle');31const { ElementHandle } = require('playwright/lib/server/elementHandler');32const { Frame } = require('playwright/lib/server/frame');33doExposeBinding(Page.prototype);34doExposeBinding(JSHandle.prototype);35doExposeBinding(ElementHandle.prototype);36doExposeBinding(Frame.prototype);

Using AI Code Generation

1const { doExposeBinding } = require('playwright/lib/internal/evaluators/JavaScriptEnvironment');2const { Page } = require('playwright/lib/server/page');3const { Frame } = require('playwright/lib/server/frame');4const { JSHandle } = require('playwright/lib/server/jsHandle');5doExposeBinding(Page.prototype, 'pageBinding', true);6doExposeBinding(Frame.prototype, 'frameBinding', true);7doExposeBinding(JSHandle.prototype, 'handleBinding', false);8const { chromium } = require('playwright');9(async () => {10  const browser = await chromium.launch();11  const context = await browser.newContext();12  const page = await context.newPage();13  await page.exposeBinding('pageBinding', async (source, ...args) => {14    console.log('pageBinding', source, args);15  });16  await page.exposeBinding('frameBinding', async (source, ...args) => {17    console.log('frameBinding', source, args);18  });19  await page.exposeBinding('handleBinding', async (source, ...args) => {20    console.log('handleBinding', source, args);21  });22  await page.evaluate(() => {23    window.pageBinding('fromEvaluate', 1, 2, 3);24    window.frameBinding('fromEvaluate', 1, 2, 3);25    window.handleBinding('fromEvaluate', 1, 2, 3);26  });27  await browser.close();28})();29const { chromium } = require('playwright');30(async () => {31  const browser = await chromium.launch();32  const context = await browser.newContext();33  const page = await context.newPage();34  await page.exposeBinding('pageBinding', async (source, ...args) => {35    console.log('pageBinding', source, args);36  });37  await page.exposeBinding('frameBinding', async (source, ...args) => {38    console.log('frameBinding', source, args);39  });40  await page.exposeBinding('handleBinding', async (source, ...args) => {41    console.log('handleBinding', source, args);42  });

Using AI Code Generation

1const { doExposeBinding } = require('playwright-core/lib/server/browserContext');2const { BrowserContext } = require('playwright-core/lib/server/browserContext');3const { Page } = require('playwright-core/lib/server/page');4const { JSHandle } = require('playwright-core/lib/server/jsHandle');5const { ElementHandle } = require('playwright-core/lib/server/elementHandler');6const { Frame } = require('playwright-core/lib/server/frames');7const { BindingCall } = require('playwright-core/lib/server/injected/injectedScript');8const { ExecutionContext } = require('playwright-core/lib/server/injected/injectedScript');9const { evaluateHandle } = require('playwright-core/lib/server/injected/injectedScript');10const { evaluate } = require('playwright-core/lib/server/injected/injectedScript');11const { serializeResult } = require('playwright-core/lib/server/injected/injectedScript');12const { serializeError } = require('playwright-core/lib/server/injected/injectedScript');13const { serializeValue } = require('playwright-core/lib/server/injected/injectedScript');14const { parseValue } = require('playwright-core/lib/server/injected/injectedScript');15const { releaseObject } = require('playwright-core/lib/server/injected/injectedScript');16const { createHandle } = require('playwright-core/lib/server/injected/injectedScript');17const { createJSHandle } = require('playwright-core/lib/server/injected/injectedScript');18const { createHandleFromElement } = require('playwright-core/lib/server/injected/injectedScript');19const { createHandleFromFrame } = require('play

Using AI Code Generation

1const { doExposeBinding } = require('playwright/lib/server/chromium/crPage');2doExposeBinding(page, 'exposedBinding', (source, ...args) => {3    console.log('exposedBinding', source, args);4});5page.exposeBinding('exposedBinding', (source, ...args) => {6    console.log('exposedBinding', source, args);7});8const { doAddInitScript } = require('playwright/lib/server/chromium/crPage');9doAddInitScript(page, 'console.log("doAddInitScript")');10const { doAddInitScript } = require('playwright/lib/server/chromium/crPage');11doAddInitScript(page, 'console.log("doAddInitScript")');12page.evaluate(() => {13    window.addEventListener('message', (event) => {14        console.log('window.addEventListener', event);15    });16    window.postMessage('hello', '*');17});18const { doAddInitScript } = require('playwright/lib/server/chromium/crPage');19doAddInitScript(page, 'console.log("doAddInitScript")');20const { doAddInitScript } = require('playwright/lib/server/chromium/crPage');21doAddInitScript(page, 'console.log("doAddInitScript")');22page.evaluate(() => {23    window.addEventListener('message', (event) => {24        console.log('window.addEventListener', event);25    });26    window.postMessage('hello', '*');27});28const { doAddInitScript } = require('playwright/lib/server/chromium/crPage');29doAddInitScript(page, 'console.log("doAddInitScript")');30const { doAddInitScript } = require('playwright/lib/server/chromium/crPage');31doAddInitScript(page, 'console.log("doAddInitScript")');32page.evaluate(() => {33    window.addEventListener('message', (event) => {34        console.log('window.addEventListener', event);35    });

Using AI Code Generation

1const { chromium } = require('playwright');2const { doExposeBinding } = require('playwright/lib/server/browserContext');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  doExposeBinding(context, 'add', (source, ...args) => {7    return args.reduce((a, b) => a + b, 0);8  });9  const page = await context.newPage();10  const result = await page.evaluate(() => {11    return add(5, 6);12  });13  console.log(result);14  await browser.close();15})();16from playwright.sync_api import sync_playwright17with sync_playwright() as p:18    browser = p.chromium.launch()19    context = browser.new_context()20    page = context.new_page()21    result = page.evaluate("() => add(5, 6)")22    print(result)23    browser.close()24import { chromium } from 'playwright';25(async () => {26  const browser = await chromium.launch();27  const context = await browser.newContext();28  const page = await context.newPage();29  const result = await page.evaluate(() => {30    return add(5, 6);31  });32  console.log(result);33  await browser.close();34})();35const { chromium } = require('playwright');36const { doExposeBinding } = require('playwright/lib/server/browserContext');37(async () => {38  const browser = await chromium.launch();39  const context = await browser.newContext();

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.