KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta 
How to use useReducer method in Playwright Internal
Best JavaScript code snippet using playwright-internal
precache-manifest.db9036a6862d844258fa667c805d15c6.js
Source:precache-manifest.db9036a6862d844258fa667c805d15c6.js 
1self.__precacheManifest = (self.__precacheManifest || []).concat([2 {3 "revision": "42921ba45d0a604bcf42296130e26a73",4 "url": "/hooks-usereducer/index.html"5 },6 {7 "revision": "5cfdcaf91c62a97eb092",8 "url": "/hooks-usereducer/static/css/main.ba07f8a4.chunk.css"9 },10 {11 "revision": "a422ad944d31436d67ce",12 "url": "/hooks-usereducer/static/js/2.69b0e7dc.chunk.js"13 },14 {15 "revision": "94b29ac6d0ec426932e82da99c88b81c",16 "url": "/hooks-usereducer/static/js/2.69b0e7dc.chunk.js.LICENSE.txt"17 },18 {19 "revision": "5cfdcaf91c62a97eb092",20 "url": "/hooks-usereducer/static/js/main.0247d8a4.chunk.js"21 },22 {23 "revision": "db8bfcc56d268e4fda51",24 "url": "/hooks-usereducer/static/js/runtime-main.47d5b31b.js"25 },26 {27 "revision": "2fbd3928746a56366c1b0135c7ad2b59",28 "url": "/hooks-usereducer/static/media/00666a410975c6454852dfeaad76a170.2fbd3928.jpg"29 },30 {31 "revision": "e029e8795716aa345ca32d53fbbc7271",32 "url": "/hooks-usereducer/static/media/71u8N2e0D2L._SY355_.e029e879.jpg"33 },34 {35 "revision": "67e69be3d26600fdb63e4af46fe94f19",36 "url": "/hooks-usereducer/static/media/HB-250.67e69be3.jpg"37 },38 {39 "revision": "bf750118b0035a04b59565e399056671",40 "url": "/hooks-usereducer/static/media/HB280.bf750118.jpg"41 },42 {43 "revision": "d67fae0e88b9dc3a5e6464d648ef3f82",44 "url": "/hooks-usereducer/static/media/LaptopReportLogin.d67fae0e.jpg"45 },46 {47 "revision": "7d053b6e384674231f43a550b74f9543",48 "url": "/hooks-usereducer/static/media/Pink_Beauty_Bouquet_5565M_43389c70.7d053b6e.jpg"49 },50 {51 "revision": "0b594f4c73863254fb97720fdff144a5",52 "url": "/hooks-usereducer/static/media/S47-4553s__52710.1537976464.0b594f4c.jpg"53 },54 {55 "revision": "11d848ab114559e2e4946d00a6886762",56 "url": "/hooks-usereducer/static/media/bg-flower.11d848ab.jpg"57 },58 {59 "revision": "bc72a22b7d29eb5ede34c8932edfb807",60 "url": "/hooks-usereducer/static/media/bg-flw.bc72a22b.jpg"61 },62 {63 "revision": "2a127347b6f683e89ea9683f67e7b0fd",64 "url": "/hooks-usereducer/static/media/blended-flower-bouquet-2_300.2a127347.jpg"65 },66 {67 "revision": "9a6a18c48a2f65707568a2b846537052",68 "url": "/hooks-usereducer/static/media/flower.9a6a18c4.jpg"69 },70 {71 "revision": "9a8fe86facce2b39af9096b57517d9fe",72 "url": "/hooks-usereducer/static/media/istockphoto.9a8fe86f.jpg"73 },74 {75 "revision": "6e32878542a4a6b86e640204d951fbff",76 "url": "/hooks-usereducer/static/media/light-blue-background.6e328785.jpg"77 },78 {79 "revision": "9b42bc881d6f9860b34957c8aac1dbdc",80 "url": "/hooks-usereducer/static/media/login-background.9b42bc88.jpg"81 },82 {83 "revision": "d2f771c20fdfc52a7487aae3f0a288f5",84 "url": "/hooks-usereducer/static/media/logo.d2f771c2.jpg"85 },86 {87 "revision": "6762b4fa0cd31a8400036f910c911fb5",88 "url": "/hooks-usereducer/static/media/pc-bg.6762b4fa.jpg"89 },90 {91 "revision": "25779a967c92867e3b3d20a1f30aee68",92 "url": "/hooks-usereducer/static/media/photo-1497864149936-d3163f0c0f4b.25779a96.jpg"93 },94 {95 "revision": "44b22376bff5e7e56c261c301f55fb55",96 "url": "/hooks-usereducer/static/media/photo-1554415707-6e8cfc93fe23.44b22376.jpg"97 },98 {99 "revision": "674f0b50eaecf38bff2bfd9c55ced33e",100 "url": "/hooks-usereducer/static/media/pink-spring-flowers-facebook-cover.674f0b50.jpg"101 },102 {103 "revision": "88b7881338500df0ac722ca2307bee82",104 "url": "/hooks-usereducer/static/media/unnamed.88b78813.jpg"105 }...
App.js
Source:App.js
...38}39function App() {40 /* maintain global state using useContext + useReducer 41 passe reducer function and initial state to useReducer hook and returned count state and dispatch action*/42 const [count, dispatch] = useReducer(reducer, initialState)43 return (44 <div className="App">45 {/* *************** useState examples *********** */}46 {/* <ClassCounter/>47 <HooksCounter/> */}48 {/* <HookCounterTwo/> */}49 {/* <HookCounterThree/> */}50 {/* <HooksArray/> */}51 {/* *************** useEffect examples *********** */}52 {/* <UseEffectOne/> */}53 {/* <UseEffectConditional/> */}54 {/* <UseEffectHookMouse/> */}55 {/* <MouseContainer/> */}56 {/* <DataFetchingHook/> */}...
UseReducer.jsx
Source:UseReducer.jsx
...14If you find yourself keeping track of multiple pieces of 15state that rely on complex logic, useReducer may be useful.16Syntax17The useReducer Hook accepts two arguments.18useReducer(<reducer>, <initialState>)19The reducer function contains your custom state logic and 20the initialState can be a simple value but generally will 21contain an object.22The useReducer Hook returns the current state and a dispatch23method.24const initialTodos = [25 {26 id: 1,27 title: "Todo 1",28 complete: false,29 },30 {31 id: 2,32 title: "Todo 2",33 complete: false,34 },35];36const reducer = (state, action) => {37 switch (action.type) {38 // is state initialTodos? while action is d exact 39 // item selected and id is its ppty selected too40 case "COMPLETE":41 return state.map((todo) => {42 if (todo.id === action.id) {43 return { ...todo, complete: !todo.complete };44 } else {45 return todo;46 }47 });48 default:49 return state;50 }51};52function Todos() {53 const [todos, dispatch] = useReducer(reducer, initialTodos);54 const handleComplete = (todo) => {55 dispatch({ type: "COMPLETE", id: todo.id });56 };57 return (58 <>59 {60 todos.map((todo) => (61 <div key={todo.id}>62 <label>63 <input64 type="checkbox"65 checked={todo.complete}66 onChange={() => handleComplete(todo)}67 />...
Register.js
Source:Register.js
...8 (total * ((100 - discount) / 100)).toFixed(0);9const installments = ({ index }) => 12 - index + 1;10const Register = ({ title, Component }) => {11 // Client Form12 const [cnpj, setCnpj] = useReducer(update);13 const [cpf, setCpf] = useReducer(update);14 const [type, setType] = useReducer(update, "cnpj");15 const [ie, setIe] = useReducer(update);16 const [rs, setRs] = useReducer(update);17 const [fantasy, setFantasy] = useReducer(update);18 const [category, setCategory] = useReducer(update, categories[0]);19 const [branch, setBranch] = useReducer(update);20 const [taxing, setTaxing] = useReducer(update, taxes[0]);21 const [address, setAddress] = useReducer(update);22 const [state, setState] = useReducer(update, states[26]);23 const [city, setCity] = useReducer(update);24 const [postal, setPostal] = useReducer(update);25 const [since, setSince] = useReducer(update, new Date());26 const [member, setMember] = useReducer(update, new Date());27 // Debt Form28 const [total, setTotal] = useReducer(update, { int: "0", mask: "0,00" });29 const [discount, setDiscount] = useReducer(update, "0");30 const [note, setNote] = useReducer(update);31 const [deadline, setDeadline] = useReducer(update, "1");32 // Auxiliary Defs33 const [initialMonth, setInitialMonth] = useReducer(update, months[0]);34 const [availableCities, setAvailableCities] = useReducer(update);35 useEffect(() => {36 setAvailableCities(cities[state.short]);37 setCity(cities[state.short][0]);38 }, [state]);39 return (40 <FormContext.Provider41 value={{42 cnpj,43 setCnpj,44 cpf,45 setCpf,46 type,47 setType,48 ie,...
ClientStore.js
Source:ClientStore.js
...5 _message, messageReducer,6 _viewPage, viewStateReducer, pageReducer, _content, contentReducer, _info, infoReducer,7 projectReducer } from './clientReducer';8function ClientStore(props) {9 // const [ .. , ..Dispatch] = useReducer( Reducer, '');10 const [session, sessionDispatch] = useReducer(sessionReducer, _session);11 const [globalState, globalStateDispatch] = useReducer(globalStateReducer, _globalState);12 const [addressValue, addressValueDispatch] = useReducer(addressValueReducer, _addressValue);13 const [modalState, modalStateDispatch] = useReducer(modalStateReducer, _modalState);14 const [search, searchDispatch] = useReducer(searchReducer, _search);15 const [pageNumber, pageNumberDispatch] = useReducer(pageNumberReducer, _pageNumber);16 const [projectInformation, projectInformationDispatch] = useReducer(projectInformationReducer, _projectInformation)17 const [recentlyNewsInformation, recentlyNewsInformationDispatch] = useReducer(recentlyNewsInformationReducer, _recentlyNewsInformation)18 const [message, messageDispatch] = useReducer(messageReducer, _message);19 const [viewState, viewStateDispatch] = useReducer(viewStateReducer, _viewPage);20 const [content, contentDispatch] = useReducer(contentReducer, _content);21 const [info, infoDispatch] = useReducer(infoReducer, _info);22 const [page, pageDispatch] = useReducer(pageReducer, 'writeInfo');23 const [ boardItemList , boardItemListDispatch] = useReducer( boardItemListReducer, '');24 const [ project, projectDispatch] = useReducer( projectReducer);25 return (26 <Store.Provider value={ {27 session, sessionDispatch, globalState, globalStateDispatch, addressValue, addressValueDispatch, modalState, modalStateDispatch, search, searchDispatch,28 pageNumber, pageNumberDispatch, projectInformation, projectInformationDispatch, recentlyNewsInformation, recentlyNewsInformationDispatch,29 viewState, viewStateDispatch, content, contentDispatch, info, infoDispatch, page, pageDispatch, message, messageDispatch,30 boardItemList , boardItemListDispatch, project, projectDispatch31 } }>32 33 {props.children}34 </Store.Provider>35 );36}...
UseReducer.js
Source:UseReducer.js
...16};17const UseReducer = () => {18 const reudxstate = store.useContext();19 const { name, count } = reudxstate;20 const [state, dispatch] = useReducer(reducer, { count: 0 });21 return (22 <div className="useReducer">23 count is : <span style={{ color: 'red' }}>{state.count}</span>24 <Button onClick={() => dispatch({ type: 'reset' })}>25 Reset26 </Button>27 <Button onClick={() => dispatch({ type: 'increment' })}>+</Button>28 <Button onClick={() => dispatch({ type: 'decrement' })}>-</Button>29 <h1>hook redux </h1>30 <p>name : <span style={{ color: 'red' }}>{name}</span> ; count : <span style={{ color: 'red' }}>{count}</span></p>31 <style>{`32 .useReducer {33 padding-top:20px;34 }35 .useReducer button {36 margin: 0 10px;37 }38 `}39 </style>40 </div>41 );42};43// const reducer = (state, action) => {44// switch (action.type) {45// case 'reset':46// return { count: action.payload };47// case 'increment':48// return { count: state.count + 1 };49// case 'decrement':50// return { count: state.count - 1 };51// default:52// return state;53// }54// };55// const UseReducer = () => {56// const initialCount = 6;57// const [state, dispatch] = useReducer(reducer, initialState, { type: 'reset', payload: initialCount });58// return (59// <div className="useReducer">60// count is : <span style={{ color: 'red' }}>{state.count}</span>61// <Button onClick={() => dispatch({ type: 'reset', payload: initialCount })}>62// Reset63// </Button>64// <Button onClick={() => dispatch({ type: 'increment' })}>+</Button>65// <Button onClick={() => dispatch({ type: 'decrement' })}>-</Button>66// <style>{`67// .useReducer {68// padding-top:20px;69// }70// .useReducer button {71// margin: 0 10px;...
Provider.js
Source:Provider.js
...4import PropTypes from 'prop-types'5export const GlobalContext = createContext({})6export const GlobalProvider = ({ children }) => {7 // Login8 const [loginState, loginDispatch] = useReducer(reducer, initState)9 // Konten10 const [kontenState, kontenDispatch] = useReducer(reducer, initState)11 // Profile User12 const [profileUserState, profileUserDispatch] = useReducer(reducer, initState)13 // Dashboard14 const [dashboardState, dashboardDispatch] = useReducer(reducer, initState)15 // Penyakit16 const [penyakitState, penyakitDispatch] = useReducer(reducer, initState)17 // Gejala18 const [gejalaState, gejalaDispatch] = useReducer(reducer, initState)19 // Pasien20 const [pasienState, pasienDispatch] = useReducer(reducer, initState)21 // Bobot22 const [bobotState, bobotDispatch] = useReducer(reducer, initState)23 // Diagnosa24 const [diagnosaState, diagnosaDispatch] = useReducer(reducer, initState)25 // Users26 const [usersState, usersDispatch] = useReducer(reducer, initState)27 // Detail Informasi28 const [detailPenyakitState, detailPenyakitDispatch] = useReducer(reducer, initState)29 // Hasil Diagnosa30 const [hasilDiagnosaState, hasilDiagnosaDispatch] = useReducer(reducer, initState)31 const dataGlobal = {32 loginState,33 loginDispatch,34 kontenState,35 kontenDispatch,36 profileUserState,37 profileUserDispatch,38 dashboardState,39 dashboardDispatch,40 penyakitState,41 penyakitDispatch,42 gejalaState,43 gejalaDispatch,44 pasienState,...
FormComponent.js
Source:FormComponent.js
...17}18//#endregion useReducer19function FormComponent() {20 //#region useReducer21 const [state, dispatch] = useReducer(reducer, initialState);22 23 const handleChange = (event) => {24 dispatch({field: event.target.name, value: event.target.value}) 25 }26 //#endregion useReducer27 //#region useReducer28 const {userName, password} = state;29 //#endregion useReducer30 const submitForm = (event) => {31 event.preventDefault();32 axios.post('http://localhost:3000/login', state)33 .then(res => {34 console.log('login success: ', res);35 ...
Using AI Code Generation
1const { test, expect } = require('@playwright/test');2test('useReducer', async ({ page }) => {3 const [state, dispatch] = await page.useReducer((state, action) => {4 switch (action.type) {5 return state + 1;6 return state - 1;7 return 0;8 return state;9 }10 }, 0);11 expect(state).toBe(0);12 await dispatch({ type: 'increment' });13 expect(state).toBe(1);14 await dispatch({ type: 'decrement' });15 expect(state).toBe(0);16 await dispatch({ type: 'reset' });17 expect(state).toBe(0);18});19 ✓ useReducer (1s)20 1 passed (1s)
Using AI Code Generation
1const { useReducer } = require('playwright-core/lib/server/frames');2const { Frame, Page } = require('playwright-core/lib/server/supplements');3const { helper } = require('playwright-core/lib/server/helper');4const { assert } = require('playwright-core/lib/server/helper');5const { useReducer } = require('playwright-core/lib/server/frames');6const { Frame, Page } = require('playwright-core/lib/server/supplements');7const { helper } = require('playwright-core/lib/server/helper');8const { assert } = require('playwright-core/lib/server/helper');9const { useReducer } = require('playwright-core/lib/server/frames');10const { Frame, Page } = require('playwright-core/lib/server/supplements');11const { helper } = require('playwright-core/lib/server/helper');12const { assert } = require('playwright-core/lib/server/helper');13const { useReducer } = require('playwright-core/lib/server/frames');14const { Frame, Page } = require('playwright-core/lib/server/supplements');15const { helper } = require('playwright-core/lib/server/helper');16const { assert } = require('playwright-core/lib/server/helper');17const { useReducer } = require('playwright-core/lib/server/frames');18const { Frame, Page } = require('playwright-core/lib/server/supplements');19const { helper } = require('playwright-core/lib/server/helper');20const { assert } = require('playwright-core/lib/server/helper');21const { useReducer } = require('playwright-core/lib/server/frames');22const { Frame, Page } = require('playwright-core/lib/server/supplements');23const { helper } = require('playwright-core/lib/server/helper');24const { assert } = require('playwright-core/lib/server/helper');25const { useReducer } = require('playwright-core/lib/server/frames');26const { Frame, Page } = require('playwright-core/lib/server/supplements');27const { helper } = require('playwright-core/lib/server/helper
Using AI Code Generation
1const { useReducer } = require('@playwright/test');2const { test, expect } = useReducer;3test('test', async ({ page }) => {4 const title = page.locator('text=Get started');5 await expect(title).toBeVisible();6});7test('test', async ({ page }) => {8 const title = page.locator('text=Get started');9 await expect(title).toBeVisible();10});11test('test', async ({ page }) => {12 const title = page.locator('text=Get started');13 await expect(title).toBeVisible();14});15test('test', async ({ page }) => {16 const title = page.locator('text=Get started');17 await expect(title).toBeVisible();18});19test('test', async ({ page }) => {20 const title = page.locator('text=Get started');21 await expect(title).toBeVisible();22});23test('test', async ({ page }) => {24 const title = page.locator('text=Get started');25 await expect(title).toBeVisible();26});27test('test', async ({ page }) => {28 const title = page.locator('text=Get started');29 await expect(title).toBeVisible();30});31test('test', async ({ page }) => {32 const title = page.locator('text=Get started');33 await expect(title).toBeVisible();34});35test('test', async ({ page }) => {36 const title = page.locator('text=Get started');37 await expect(title).toBeVisible();38});39test('test', async ({ page }) => {40 const title = page.locator('text=Get started');
Using AI Code Generation
1const { useReducer } = require('@playwright/test');2const { useReducer } = require('@playwright/test');3const reducer = (state, action) => {4 switch (action.type) {5 return { count: state.count + 1 };6 return { count: state.count - 1 };7 return { count: 0 };8 throw new Error('Invalid action type');9 }10};11test('useReducer', async ({ page }) => {12 const [state, dispatch] = useReducer(reducer, { count: 0 });13 expect(state.count).toBe(0);14 await dispatch({ type: 'increment' });15 expect(state.count).toBe(1);16 await dispatch({ type: 'decrement' });17 expect(state.count).toBe(0);18 await dispatch({ type: 'reset' });19 expect(state.count).toBe(0);20});21test('useReducer', async ({ page }) => {22 const [state, dispatch] = useReducer(reducer, { count: 0 });23 expect(state.count).toBe(0);24 await dispatch({ type: 'increment' });25 expect(state.count).toBe(1);26 await dispatch({ type: 'decrement' });27 expect(state.count).toBe(0);28 await dispatch({ type: 'reset' });29 expect(state.count).toBe(0);30});31const reducer = (state, action) => {32 switch (action.type) {33 return { count: state.count + 1 };34 return { count: state.count - 1 };35 return { count: 0 };36 throw new Error('Invalid action type');37 }38};39test('useReducer', async ({ page }) => {40 const [state, dispatch] = useReducer(reducer, { count: 0 });41 expect(state.count).toBe(0);
Using AI Code Generation
1const { reducer } = require('playwright-core/lib/server/supplements/recorder/recorderSupplement');2const { chromium } = require('playwright-core');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const input = await page.$('input[name="q"]');8 const value = await reducer('query', input);9 console.log(value);10 await browser.close();11})();
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.
Run Playwright Internal automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
