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How to use defineExpose method in Playwright Internal

Best JavaScript code snippet using playwright-internal

.eslintrc.js

Source:.eslintrc.js

1module.exports = {2  // æ¤é¡¹æ¯ç¨æ¥åè¯eslintæ¾å½åéç½®æä»¶ä¸è½å¾ç¶çº§æ¥æ¾3  root: true,4  env: {5    browser: true,6    es2021: true7  },8  extends: [9    'plugin:vue/vue3-essential',10    'plugin:vue/vue3-recommended',11    'prettier'12  ],13  parser: 'vue-eslint-parser',14  parserOptions: {15    ecmaVersion: 12,16    // æå®ESlintçè§£æå¨17    parser: '@typescript-eslint/parser',18    // åè®¸ä½¿ç¨ESè¯æ³19    ecmaVersion: 2020,20    // åè®¸ä½¿ç¨import21    sourceType: 'module'22  },23  plugins: ['vue', '@typescript-eslint', 'prettier'],24  rules: {25    'vue/no-multiple-template-root': 'off',26    // åè®¸å¤§ååæ¯å¼å¤´çå½æ°ä¸ä½ä¸ºæé å½æ°ï¼vite.config.ts ä¸ä½¿ç¨ç Components AntDesignVueResolver é½å±äºå¤§ååæ¯å¼å¤´ä¸ä½ä¸ºæé å½æ°27    'new-cap': ['error', { capIsNew: false }],28    'vue/valid-v-for': 'off', // å³év-foréè¦ç»å®key29    'vue/require-v-for-key': 'off', // å³év-foréè¦ç»å®key30    'vue/attributes-order': 'off',31    'vue/attribute-hyphenation': 'off',32    'vue/v-on-event-hyphenation': 'off',33    'vue/prop-name-casing': 'off',34    'vue/component-definition-name-casing': 'off',35    'vue/multi-word-component-names': 'off',36    'vue/no-parsing-error': 'off',37    'vue/valid-template-root': 'off',38    'no-unused-vars': ['error', { vars: 'all', args: 'after-used' }] // ä¸è½æå£°æåæªè¢«ä½¿ç¨çåéæåæ°39  },40  // defineProps defineEmits defineExpose withDefaults æ¯å¨å±ä½¿ç¨çï¼ä¸éè¦ä» vue ä¸å¼å¥41  globals: {42    defineProps: 'readonly',43    defineEmits: 'readonly',44    defineExpose: 'readonly',45    withDefaults: 'readonly'46  },47  // éç½®å«å @48  settings: {49    'import/resolver': {50      typescript: {51        project: `${__dirname}/tsconfig.json`52      }53    }54  }...

mixin.js

Source:mixin.js

1/**2@description mixin éç½® å¸¸ç¨ç hook3*/4import totalUtils from './utils'5import { useRouter, useRoute, onBeforeRouteLeave } from 'vue-router'6import { provide, inject, defineAsyncComponent, toRaw, useAttrs, useSlots, defineExpose, useCssModule, markRaw, computed, toRefs, toRef, ref, defineEmits, reactive, defineProps, onMounted, onUnmounted, watch, watchEffect, getCurrentInstance, onActivated, nextTick } from 'vue'7import { useStore } from 'vuex'8function customMixin () {9  const that = getCurrentInstance()10  const store = useStore()11  const router = useRouter()12  const route = useRoute()13  const app = computed(() => {14    return store.state.app15  })16  const themeColors = computed(() => {17    return themeColors18  })19  const themeColor = computed(() => {20    return app.value.themeColor21  })22  return {23    ...totalUtils,24    provide,25    inject,26    reactive, // å¯¹è±¡ååºå¼27    onBeforeRouteLeave, // è·¯ç±ç¦»å¼é©å28    ref, // åºæ¬æ°æ®ååºå¼29    toRefs, // ååºå¼æ°æ®å¯¹è±¡ å¼ç¨30    toRef, /// ååºå¼æ°æ®åä¸ª å¼ç¨31    toRaw, // å°ååºå¼å¯¹è±¡ è¿åæåå§å¯¹è±¡ åªå¤çreactive32    markRaw, // æ è®°ä¸ºåå§ç33    watch, // ä¾¦å¬å¨34    watchEffect, // èªå¨ä¾¦å¬å¨35    defineEmits, // åå¸äºä»¶36    defineProps, // prop37    defineExpose, // vue3 ä¸ä¸è½éè¿ refè·åå®ä¾ä¸çæ°æ®38    onMounted,39    onActivated,40    onUnmounted,41    defineAsyncComponent,42    store,43    router,44    route,45    app,46    computed,47    useAttrs,48    useSlots,49    useCssModule,50    themeColors,51    themeColor,52    that, // å½åå®ä¾53    nextTick54  }55}56// æéæ³¨å...

Using AI Code Generation

1playwright = require('playwright');2  onst browser = await playwrigt.ch.launch({ headless: false );3  const context awaitbrowse.newContext();4  const page = await context.nwPage();5  await page.exposeFunction('myFunction', () => 'hello world');6  await page.evaluate(async () => {7    const result = await window.myFunction();8    console.log(result);9  });10  await browser.close();11})();12    window.defineExpose = function(name, binding) {13        window[name] = binding;14    }15    async function main() {16        await window.myFunction();17    }18    main();19Your name to display (optional):

Using AI Code Generation

1const {chromium} = re2const playwright = require('playwright');3(async () => {4  const browser = await playwright.chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.exposeFunction('myFunction', () => 'hello world');8  await page.evaluate(async () => {9    const result = await window.myFunction();10    console.log(result);11  });12  await browser.close();13})();14    window.defineExpose = function(name, binding) {15        window[name] = binding;16    }17    async function main() {18        await window.myFunction();19    }20    main();21Your name to display (optional):

Using AI Code Generation

1const {chromium} = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await page.exposeFunction('defineExpose', () => {6    console.log('defineExpose');7  });8  await page.evaluate(async () => {9    await defineExpose();10  });11  await browser.close();12})();13const {chromium} = require('playwright');14(async () => {15  const browser = await chromium.launch();16  const page = await browser.newPage();17  await page.exposeFunction('defineExpose', () => {18    console.log('defineExpose');19  });20  await page.evaluate(async () => {21    await defineExpose();22  });23  await browser.close();24})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await page.exposeFunction('myFunction', function (text) {6    return text;7  });8  const result = await page.evaluate(async () => {9    return await myFunction('hello');10  });11  console.log(result);12  await browser.close();13})();14const {chromium} = require('playwright');15(async () => {16  const browser = await chromium.launch();17  const page = await browser.newPage();18  await page.exposeFunction('defineExpose', () => {19    console.log('defineExpose');20  });21  await page.evaluate(async () => {22    await defineExpose();23  });24  await browser.close();25})();26const {chromium} = require('playwright');27(async () => {28  const browser = await chromium.launch();29  const page = await browser.newPage();30  await page.exposeFunction('defineExpose', () => {31    console.log('defineExpose');32  });33  await page.evaluate(async () => {34    await defineExpose();35  });36  await browser.close();37})();38const {chromium} = require('playwright');39(async () => {40  const browser = await chromium.launch();41  const page = await browser.newPage();

Using AI Code Generation

1const { chromium } = require('playwright');2const path = require('path');3(async () => {4    const browser = await chromium.launch({5        args: [`--disable-extensions-except=${path.resolve(__dirname)}`, `--load-extension=${path.resolve(__dirname)}`],6    });7    const page = await browser.newPage();8    await page.waitForTimeout(3000);9    await page.exposeFunction('myFunction', (value) => {10        console.log(value);11    });12    await page.evaluate(() => {13        myFunction('Hello from browser');14    });15    await browser.close();16})();

Using AI Code Generation

1const playwright = require('playwright');2const { defineExpose } = require('playwright/lib/internal/frames');3const { Page } = require('playwright/lib/page');4const { Frame } = require('playwright/lib/frame');5const exposeFunction = async (selector) => {6    const element = document.querySelector(selector);7    const style = window.getComputedStyle(element);8    return style.fontWeight;9};10const exposeFunction2 = async (selector) => {11    const element = document.querySelector(selector);12    const style = window.getComputedStyle(element);13    return style.fontWeight;14};15const exposeFunction3 = async (selector) => {16    const element = document.querySelector(selector);17    const style = window.getComputedStyle(element);18    return style.fontWeight;19};20const exposeFunction4 = async (selector) => {21    const element = document.querySelector(selector);22    const style = window.getComputedStyle(element);23    return style.fontWeight;24};25const exposeFunction5 = async (selector) => {26    const element = document.querySelector(selector);27    const style = window.getComputedStyle(element);28    return style.fontWeight;29};30const exposeFunction6 = async (selector) => {31    const element = document.querySelector(selector);32    const style = window.getComputedStyle(element);33    return style.fontWeight;34};35const exposeFunction7 = async (selector) => {36    const element = document.querySelector(selector);37    const style = window.getComputedStyle(element);38    return style.fontWeight;39};40const exposeFunction8 = async (selector) => {41    const element = document.querySelector(selector);42    const style = window.getComputedStyle(element);43    return style.fontWeight;44};45const exposeFunction9 = async (selector) => {46    const element = document.querySelector(selector);47    const style = window.getComputedStyle(element);48    return style.fontWeight;49};

Using AI Code Generation

1const playwright = require('playwright');2const { defineExpose } = require('playwright/lib/internal/frames');3const { Page } = require('playwright/lib/page');4const { Frame } = require('playwright/lib/frame');5const exposeFunction = async (selector) => {6    const element = document.querySelector(selector);7    const style = window.getComputedStyle(element);8    return style.fontWeight;9};10const exposeFunction2 = async (selector) => {11    const element = document.querySelector(selector);12    const style = window.getComputedStyle(element);13    return style.fontWeight;14};15const exposeFunction3 = async (selector) => {16    const element = document.querySelector(selector);17    const style = window.getComputedStyle(element);18    return style.fontWeight;19};20const exposeFunction4 = async (selector) => {21    const element = document.querySelector(selector);22    const style = window.getComputedStyle(element);23    return style.fontWeight;24};25const exposeFunction5 = async (selector) => {26    const element = document.querySelector(selector);27    const style = window.getComputedStyle(element);28    return style.fontWeight;29};30const exposeFunction6 = async (selector) => {31    const element = document.querySelector(selector);32    const style = window.getComputedStyle(element);33    return style.fontWeight;34};35const exposeFunction7 = async (selector) => {36    const element = document.querySelector(selector);37    const style = window.getComputedStyle(element);38    return style.fontWeight;39};40const exposeFunction8 = async (selector) => {41    const element = document.querySelector(selector);42    const style = window.getComputedStyle(element);43    return style.fontWeight; to use Playwright in R?44};45const exposeFunction9 H async (selector) o> {46    const element w document.querySelector(selector);47    const style   window.getComputedStyle(element);48    return style.fontWeight;49};

Using AI Code Generation

1const { defineExpose } = require('playwright-core/lib/server/cjs/inspectorInstrumentation');2const { Page } = require('playwright-core/lib/server/cjs/chromium/crPage');3const { chromium } = require('playwright-core');4(async () => {5  const browser = await chromium.launch({ headless: false });6  const page = await browser.newPage();7  defineExpose(Page.prototype, 'myExposedMethod', function (param) {8    console.log('myExposedMethod called with', param);9  });10  await page.exposeFunction('myExposedFunction', function (param) {11    console.log('myExposedFunction called with', param);12  });13  await page.evaluate(() => {14    window.myExposedMethod('Hello from the page!');15    window.myExposedFunction('Hello from the page!');16  });17  await browser.close();18})();19const { defineExpose } = require('playwright-core/lib/server/cjs/inspectorInstrumentation');20const { Page } = require('playwright-core/lib/server/cjs/chromium/crPage');21const { chromium } = require('playwright-core');22(async () => {23  const browser = await chromium.launch({ headless: false });24  const page = await browser.newPage();25  defineExpose(Page.prototype, 'myExposedMethod', function (param) {26    console.log('myExposedMethod called with', param);27  });28  await page.exposeFunction('myExposedFunction', function (param) {29    console.log('myExposedFunction called with', param);30  });31  await page.evaluate(() => {32    window.myExposedMethod('Hello from the page!');33    window.myExposedFunction('Hello from the page!');34  });35  await browser.close();36})();

Using AI Code Generation

1const { defineExpose } = require('playwright-core/lib/server/channels');2class MyPage {3  constructor(page) {4    defineExpose(page, 'myPage', this);5  }6  async myMethod() {7    console.log('myMethod called');8  }9}10module.exports = { MyPage };11const { MyPage } = require('./myPage');12const { chromium } = require('playwright');13(async () => {14  const browser = await chromium.launch();15  const context = await browser.newContext();16  const page = await context.newPage();17  new MyPage(page);18  await page.exposeFunction('myFunction', () => {19    console.log('myFunction called');20  });21  const myPage = await page.evaluateHandle(() => window.myPage);22  await myPage.evaluate(myPage => myPage.myMethod());23  await page.evaluate(() => window.myFunction());24  await browser.close();25})();

Using AI Code Generation

1const { defineExpose } = require('playwright/lib/server/browserContext');2defineExpose('test', async function (options, context) {3  return 'Hello World!';4});5const context = await browser.newContext();6const result = await context.exposeFunction('test');7console.log(result);8const page = await context.newPage();9const result = await page.evaluate(() => {10  return window.test();11});12console.log(result);13const result = await context.evaluate(() => {14  return window.test();15});16console.log(result);17const result = await browser.evaluate(() => {18  return window.test();19});20console.log(result);21const result = await browserServer.evaluate(() => {22  return window.test();23});24console.log(result);25const result = await contextServer.evaluate(() => {26  return window.test();27});28console.log(resutest();

Using AI Code Generation

1(async () => {2  for (const browserType of BROWSER) {3    const browser = await playwright[browserType].launch();4    const context = await browser.newContext();5    const page = await context.newPage();6    await context.exposeBinding('add', (source, arg) => {7      return arg.a + arg.b;8    });9    const result = await page.evaluate(async () => {10      return await window['add']({ a: 5, b: 4 });11    });12    console.log(result);13    await browser.close();14  }15})();16const result = await pageServer.evaluate(() => {17  return window.test();18});19console.log(result);20const result = await contextServer.evaluate(() => {21  return window.test();22});23console.log(result);24const result = await browserServer.evaluate(() => {25  return window.test();26});27console.log(result);28const result = await contextServer.evaluate(() => {29  return window.test();30});31console.log(result);32const result = await pageServer.evaluate(() => {33  return window.test();34});35console.log(result);36const result = await contextServer.evaluate(() => {37  return window.test();

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  for (const browserType of BROWSER) {4    const browser = await playwright[browserType].launch();5    const context = await browser.newContext();6    const page = await context.newPage();7    await context.exposeBinding('add', (source, arg) => {8      return arg.a + arg.b;9    });10    const result = await page.evaluate(async () => {11      return await window['add']({ a: 5, b: 4 });12    });13    console.log(result);14    await browser.close();15  }16})();

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.