Best JavaScript code snippet using playwright-internal
ReactDOMFiber-test.js
Source:ReactDOMFiber-test.js  
...146    var expectSVG = {ref: el => svgEls.push(el)};147    var expectHTML = {ref: el => htmlEls.push(el)};148    var expectMath = {ref: el => mathEls.push(el)};149    var usePortal = function(tree) {150      return ReactDOM.unstable_createPortal(151        tree,152        document.createElement('div'),153      );154    };155    var assertNamespacesMatch = function(tree) {156      container = document.createElement('div');157      svgEls = [];158      htmlEls = [];159      mathEls = [];160      ReactDOM.render(tree, container);161      svgEls.forEach(el => {162        expect(el.namespaceURI).toBe('http://www.w3.org/2000/svg');163      });164      htmlEls.forEach(el => {165        expect(el.namespaceURI).toBe('http://www.w3.org/1999/xhtml');166      });167      mathEls.forEach(el => {168        expect(el.namespaceURI).toBe('http://www.w3.org/1998/Math/MathML');169      });170      ReactDOM.unmountComponentAtNode(container);171      expect(container.innerHTML).toBe('');172    };173    it('should render one portal', () => {174      var portalContainer = document.createElement('div');175      ReactDOM.render(176        <div>177          {ReactDOM.unstable_createPortal(<div>portal</div>, portalContainer)}178        </div>,179        container,180      );181      expect(portalContainer.innerHTML).toBe('<div>portal</div>');182      expect(container.innerHTML).toBe('<div></div>');183      ReactDOM.unmountComponentAtNode(container);184      expect(portalContainer.innerHTML).toBe('');185      expect(container.innerHTML).toBe('');186    });187    it('should render many portals', () => {188      var portalContainer1 = document.createElement('div');189      var portalContainer2 = document.createElement('div');190      var ops = [];191      class Child extends React.Component {192        componentDidMount() {193          ops.push(`${this.props.name} componentDidMount`);194        }195        componentDidUpdate() {196          ops.push(`${this.props.name} componentDidUpdate`);197        }198        componentWillUnmount() {199          ops.push(`${this.props.name} componentWillUnmount`);200        }201        render() {202          return <div>{this.props.name}</div>;203        }204      }205      class Parent extends React.Component {206        componentDidMount() {207          ops.push(`Parent:${this.props.step} componentDidMount`);208        }209        componentDidUpdate() {210          ops.push(`Parent:${this.props.step} componentDidUpdate`);211        }212        componentWillUnmount() {213          ops.push(`Parent:${this.props.step} componentWillUnmount`);214        }215        render() {216          const {step} = this.props;217          return [218            <Child key="a" name={`normal[0]:${step}`} />,219            ReactDOM.unstable_createPortal(220              <Child key="b" name={`portal1[0]:${step}`} />,221              portalContainer1,222            ),223            <Child key="c" name={`normal[1]:${step}`} />,224            ReactDOM.unstable_createPortal(225              [226                <Child key="d" name={`portal2[0]:${step}`} />,227                <Child key="e" name={`portal2[1]:${step}`} />,228              ],229              portalContainer2,230            ),231          ];232        }233      }234      ReactDOM.render(<Parent step="a" />, container);235      expect(portalContainer1.innerHTML).toBe('<div>portal1[0]:a</div>');236      expect(portalContainer2.innerHTML).toBe(237        '<div>portal2[0]:a</div><div>portal2[1]:a</div>',238      );239      expect(container.innerHTML).toBe(240        '<div>normal[0]:a</div><div>normal[1]:a</div>',241      );242      expect(ops).toEqual([243        'normal[0]:a componentDidMount',244        'portal1[0]:a componentDidMount',245        'normal[1]:a componentDidMount',246        'portal2[0]:a componentDidMount',247        'portal2[1]:a componentDidMount',248        'Parent:a componentDidMount',249      ]);250      ops.length = 0;251      ReactDOM.render(<Parent step="b" />, container);252      expect(portalContainer1.innerHTML).toBe('<div>portal1[0]:b</div>');253      expect(portalContainer2.innerHTML).toBe(254        '<div>portal2[0]:b</div><div>portal2[1]:b</div>',255      );256      expect(container.innerHTML).toBe(257        '<div>normal[0]:b</div><div>normal[1]:b</div>',258      );259      expect(ops).toEqual([260        'normal[0]:b componentDidUpdate',261        'portal1[0]:b componentDidUpdate',262        'normal[1]:b componentDidUpdate',263        'portal2[0]:b componentDidUpdate',264        'portal2[1]:b componentDidUpdate',265        'Parent:b componentDidUpdate',266      ]);267      ops.length = 0;268      ReactDOM.unmountComponentAtNode(container);269      expect(portalContainer1.innerHTML).toBe('');270      expect(portalContainer2.innerHTML).toBe('');271      expect(container.innerHTML).toBe('');272      expect(ops).toEqual([273        'Parent:b componentWillUnmount',274        'normal[0]:b componentWillUnmount',275        'portal1[0]:b componentWillUnmount',276        'normal[1]:b componentWillUnmount',277        'portal2[0]:b componentWillUnmount',278        'portal2[1]:b componentWillUnmount',279      ]);280    });281    it('should render nested portals', () => {282      var portalContainer1 = document.createElement('div');283      var portalContainer2 = document.createElement('div');284      var portalContainer3 = document.createElement('div');285      ReactDOM.render(286        [287          <div key="a">normal[0]</div>,288          ReactDOM.unstable_createPortal(289            [290              <div key="b">portal1[0]</div>,291              ReactDOM.unstable_createPortal(292                <div key="c">portal2[0]</div>,293                portalContainer2,294              ),295              ReactDOM.unstable_createPortal(296                <div key="d">portal3[0]</div>,297                portalContainer3,298              ),299              <div key="e">portal1[1]</div>,300            ],301            portalContainer1,302          ),303          <div key="f">normal[1]</div>,304        ],305        container,306      );307      expect(portalContainer1.innerHTML).toBe(308        '<div>portal1[0]</div><div>portal1[1]</div>',309      );310      expect(portalContainer2.innerHTML).toBe('<div>portal2[0]</div>');311      expect(portalContainer3.innerHTML).toBe('<div>portal3[0]</div>');312      expect(container.innerHTML).toBe(313        '<div>normal[0]</div><div>normal[1]</div>',314      );315      ReactDOM.unmountComponentAtNode(container);316      expect(portalContainer1.innerHTML).toBe('');317      expect(portalContainer2.innerHTML).toBe('');318      expect(portalContainer3.innerHTML).toBe('');319      expect(container.innerHTML).toBe('');320    });321    it('should reconcile portal children', () => {322      var portalContainer = document.createElement('div');323      ReactDOM.render(324        <div>325          {ReactDOM.unstable_createPortal(<div>portal:1</div>, portalContainer)}326        </div>,327        container,328      );329      expect(portalContainer.innerHTML).toBe('<div>portal:1</div>');330      expect(container.innerHTML).toBe('<div></div>');331      ReactDOM.render(332        <div>333          {ReactDOM.unstable_createPortal(<div>portal:2</div>, portalContainer)}334        </div>,335        container,336      );337      expect(portalContainer.innerHTML).toBe('<div>portal:2</div>');338      expect(container.innerHTML).toBe('<div></div>');339      ReactDOM.render(340        <div>341          {ReactDOM.unstable_createPortal(<p>portal:3</p>, portalContainer)}342        </div>,343        container,344      );345      expect(portalContainer.innerHTML).toBe('<p>portal:3</p>');346      expect(container.innerHTML).toBe('<div></div>');347      ReactDOM.render(348        <div>349          {ReactDOM.unstable_createPortal(['Hi', 'Bye'], portalContainer)}350        </div>,351        container,352      );353      expect(portalContainer.innerHTML).toBe('HiBye');354      expect(container.innerHTML).toBe('<div></div>');355      ReactDOM.render(356        <div>357          {ReactDOM.unstable_createPortal(['Bye', 'Hi'], portalContainer)}358        </div>,359        container,360      );361      expect(portalContainer.innerHTML).toBe('ByeHi');362      expect(container.innerHTML).toBe('<div></div>');363      ReactDOM.render(364        <div>365          {ReactDOM.unstable_createPortal(null, portalContainer)}366        </div>,367        container,368      );369      expect(portalContainer.innerHTML).toBe('');370      expect(container.innerHTML).toBe('<div></div>');371    });372    it('should keep track of namespace across portals (simple)', () => {373      assertNamespacesMatch(374        <svg {...expectSVG}>375          <image {...expectSVG} />376          {usePortal(<div {...expectHTML} />)}377          <image {...expectSVG} />378        </svg>,379      );380      assertNamespacesMatch(381        <math {...expectMath}>382          <mi {...expectMath} />383          {usePortal(<div {...expectHTML} />)}384          <mi {...expectMath} />385        </math>,386      );387      assertNamespacesMatch(388        <div {...expectHTML}>389          <p {...expectHTML} />390          {usePortal(391            <svg {...expectSVG}>392              <image {...expectSVG} />393            </svg>,394          )}395          <p {...expectHTML} />396        </div>,397      );398    });399    it('should keep track of namespace across portals (medium)', () => {400      assertNamespacesMatch(401        <svg {...expectSVG}>402          <image {...expectSVG} />403          {usePortal(<div {...expectHTML} />)}404          <image {...expectSVG} />405          {usePortal(<div {...expectHTML} />)}406          <image {...expectSVG} />407        </svg>,408      );409      assertNamespacesMatch(410        <div {...expectHTML}>411          <math {...expectMath}>412            <mi {...expectMath} />413            {usePortal(414              <svg {...expectSVG}>415                <image {...expectSVG} />416              </svg>,417            )}418          </math>419          <p {...expectHTML} />420        </div>,421      );422      assertNamespacesMatch(423        <math {...expectMath}>424          <mi {...expectMath} />425          {usePortal(426            <svg {...expectSVG}>427              <image {...expectSVG} />428              <foreignObject {...expectSVG}>429                <p {...expectHTML} />430                <math {...expectMath}>431                  <mi {...expectMath} />432                </math>433                <p {...expectHTML} />434              </foreignObject>435              <image {...expectSVG} />436            </svg>,437          )}438          <mi {...expectMath} />439        </math>,440      );441      assertNamespacesMatch(442        <div {...expectHTML}>443          {usePortal(444            <svg {...expectSVG}>445              {usePortal(<div {...expectHTML} />)}446              <image {...expectSVG} />447            </svg>,448          )}449          <p {...expectHTML} />450        </div>,451      );452      assertNamespacesMatch(453        <svg {...expectSVG}>454          <svg {...expectSVG}>455            {usePortal(<div {...expectHTML} />)}456            <image {...expectSVG} />457          </svg>458          <image {...expectSVG} />459        </svg>,460      );461    });462    it('should keep track of namespace across portals (complex)', () => {463      assertNamespacesMatch(464        <div {...expectHTML}>465          {usePortal(466            <svg {...expectSVG}>467              <image {...expectSVG} />468            </svg>,469          )}470          <p {...expectHTML} />471          <svg {...expectSVG}>472            <image {...expectSVG} />473          </svg>474          <svg {...expectSVG}>475            <svg {...expectSVG}>476              <image {...expectSVG} />477            </svg>478            <image {...expectSVG} />479          </svg>480          <p {...expectHTML} />481        </div>,482      );483      assertNamespacesMatch(484        <div {...expectHTML}>485          <svg {...expectSVG}>486            <svg {...expectSVG}>487              <image {...expectSVG} />488              {usePortal(489                <svg {...expectSVG}>490                  <image {...expectSVG} />491                  <svg {...expectSVG}>492                    <image {...expectSVG} />493                  </svg>494                  <image {...expectSVG} />495                </svg>,496              )}497              <image {...expectSVG} />498              <foreignObject {...expectSVG}>499                <p {...expectHTML} />500                {usePortal(<p {...expectHTML} />)}501                <p {...expectHTML} />502              </foreignObject>503            </svg>504            <image {...expectSVG} />505          </svg>506          <p {...expectHTML} />507        </div>,508      );509      assertNamespacesMatch(510        <div {...expectHTML}>511          <svg {...expectSVG}>512            <foreignObject {...expectSVG}>513              <p {...expectHTML} />514              {usePortal(515                <svg {...expectSVG}>516                  <image {...expectSVG} />517                  <svg {...expectSVG}>518                    <image {...expectSVG} />519                    <foreignObject {...expectSVG}>520                      <p {...expectHTML} />521                    </foreignObject>522                    {usePortal(<p {...expectHTML} />)}523                  </svg>524                  <image {...expectSVG} />525                </svg>,526              )}527              <p {...expectHTML} />528            </foreignObject>529            <image {...expectSVG} />530          </svg>531          <p {...expectHTML} />532        </div>,533      );534    });535    it('should unwind namespaces on uncaught errors', () => {536      function BrokenRender() {537        throw new Error('Hello');538      }539      expect(() => {540        assertNamespacesMatch(541          <svg {...expectSVG}>542            <BrokenRender />543          </svg>,544        );545      }).toThrow('Hello');546      assertNamespacesMatch(<div {...expectHTML} />);547    });548    it('should unwind namespaces on caught errors', () => {549      function BrokenRender() {550        throw new Error('Hello');551      }552      class ErrorBoundary extends React.Component {553        state = {error: null};554        unstable_handleError(error) {555          this.setState({error});556        }557        render() {558          if (this.state.error) {559            return <p {...expectHTML} />;560          }561          return this.props.children;562        }563      }564      assertNamespacesMatch(565        <svg {...expectSVG}>566          <foreignObject {...expectSVG}>567            <ErrorBoundary>568              <math {...expectMath}>569                <BrokenRender />570              </math>571            </ErrorBoundary>572          </foreignObject>573          <image {...expectSVG} />574        </svg>,575      );576      assertNamespacesMatch(<div {...expectHTML} />);577    });578    it('should unwind namespaces on caught errors in a portal', () => {579      function BrokenRender() {580        throw new Error('Hello');581      }582      class ErrorBoundary extends React.Component {583        state = {error: null};584        unstable_handleError(error) {585          this.setState({error});586        }587        render() {588          if (this.state.error) {589            return <image {...expectSVG} />;590          }591          return this.props.children;592        }593      }594      assertNamespacesMatch(595        <svg {...expectSVG}>596          <ErrorBoundary>597            {usePortal(598              <div {...expectHTML}>599                <math {...expectMath}>600                  <BrokenRender />)601                </math>602              </div>,603            )}604          </ErrorBoundary>605          {usePortal(<div {...expectHTML} />)}606        </svg>,607      );608    });609    it('should pass portal context when rendering subtree elsewhere', () => {610      var portalContainer = document.createElement('div');611      class Component extends React.Component {612        static contextTypes = {613          foo: PropTypes.string.isRequired,614        };615        render() {616          return <div>{this.context.foo}</div>;617        }618      }619      class Parent extends React.Component {620        static childContextTypes = {621          foo: PropTypes.string.isRequired,622        };623        getChildContext() {624          return {625            foo: 'bar',626          };627        }628        render() {629          return ReactDOM.unstable_createPortal(<Component />, portalContainer);630        }631      }632      ReactDOM.render(<Parent />, container);633      expect(container.innerHTML).toBe('');634      expect(portalContainer.innerHTML).toBe('<div>bar</div>');635    });636    it('should update portal context if it changes due to setState', () => {637      var portalContainer = document.createElement('div');638      class Component extends React.Component {639        static contextTypes = {640          foo: PropTypes.string.isRequired,641          getFoo: PropTypes.func.isRequired,642        };643        render() {644          return <div>{this.context.foo + '-' + this.context.getFoo()}</div>;645        }646      }647      class Parent extends React.Component {648        static childContextTypes = {649          foo: PropTypes.string.isRequired,650          getFoo: PropTypes.func.isRequired,651        };652        state = {653          bar: 'initial',654        };655        getChildContext() {656          return {657            foo: this.state.bar,658            getFoo: () => this.state.bar,659          };660        }661        render() {662          return ReactDOM.unstable_createPortal(<Component />, portalContainer);663        }664      }665      var instance = ReactDOM.render(<Parent />, container);666      expect(portalContainer.innerHTML).toBe('<div>initial-initial</div>');667      expect(container.innerHTML).toBe('');668      instance.setState({bar: 'changed'});669      expect(portalContainer.innerHTML).toBe('<div>changed-changed</div>');670      expect(container.innerHTML).toBe('');671    });672    it('should update portal context if it changes due to re-render', () => {673      var portalContainer = document.createElement('div');674      class Component extends React.Component {675        static contextTypes = {676          foo: PropTypes.string.isRequired,677          getFoo: PropTypes.func.isRequired,678        };679        render() {680          return <div>{this.context.foo + '-' + this.context.getFoo()}</div>;681        }682      }683      class Parent extends React.Component {684        static childContextTypes = {685          foo: PropTypes.string.isRequired,686          getFoo: PropTypes.func.isRequired,687        };688        getChildContext() {689          return {690            foo: this.props.bar,691            getFoo: () => this.props.bar,692          };693        }694        render() {695          return ReactDOM.unstable_createPortal(<Component />, portalContainer);696        }697      }698      ReactDOM.render(<Parent bar="initial" />, container);699      expect(portalContainer.innerHTML).toBe('<div>initial-initial</div>');700      expect(container.innerHTML).toBe('');701      ReactDOM.render(<Parent bar="changed" />, container);702      expect(portalContainer.innerHTML).toBe('<div>changed-changed</div>');703      expect(container.innerHTML).toBe('');704    });705    it('findDOMNode should find dom element after expanding a fragment', () => {706      class MyNode extends React.Component {707        render() {708          return !this.props.flag709            ? [<div key="a" />]710            : [<span key="b" />, <div key="a" />];711        }712      }713      var myNodeA = ReactDOM.render(<MyNode />, container);714      var a = ReactDOM.findDOMNode(myNodeA);715      expect(a.tagName).toBe('DIV');716      var myNodeB = ReactDOM.render(<MyNode flag={true} />, container);717      expect(myNodeA === myNodeB).toBe(true);718      var b = ReactDOM.findDOMNode(myNodeB);719      expect(b.tagName).toBe('SPAN');720    });721    it('should bubble events from the portal to the parent', () => {722      var portalContainer = document.createElement('div');723      var ops = [];724      var portal = null;725      ReactDOM.render(726        <div onClick={() => ops.push('parent clicked')}>727          {ReactDOM.unstable_createPortal(728            <div729              onClick={() => ops.push('portal clicked')}730              ref={n => (portal = n)}>731              portal732            </div>,733            portalContainer,734          )}735        </div>,736        container,737      );738      expect(portal.tagName).toBe('DIV');739      var fakeNativeEvent = {};740      ReactTestUtils.simulateNativeEventOnNode(741        'topClick',742        portal,743        fakeNativeEvent,744      );745      expect(ops).toEqual(['portal clicked', 'parent clicked']);746    });747    it('should not onMouseLeave when staying in the portal', () => {748      var portalContainer = document.createElement('div');749      var ops = [];750      var firstTarget = null;751      var secondTarget = null;752      var thirdTarget = null;753      function simulateMouseMove(from, to) {754        if (from) {755          ReactTestUtils.simulateNativeEventOnNode('topMouseOut', from, {756            target: from,757            relatedTarget: to,758          });759        }760        if (to) {761          ReactTestUtils.simulateNativeEventOnNode('topMouseOver', to, {762            target: to,763            relatedTarget: from,764          });765        }766      }767      ReactDOM.render(768        <div>769          <div770            onMouseEnter={() => ops.push('enter parent')}771            onMouseLeave={() => ops.push('leave parent')}>772            <div ref={n => (firstTarget = n)} />773            {ReactDOM.unstable_createPortal(774              <div775                onMouseEnter={() => ops.push('enter portal')}776                onMouseLeave={() => ops.push('leave portal')}777                ref={n => (secondTarget = n)}>778                portal779              </div>,780              portalContainer,781            )}782          </div>783          <div ref={n => (thirdTarget = n)} />784        </div>,785        container,786      );787      simulateMouseMove(null, firstTarget);...Portal.js
Source:Portal.js  
...116      }117      // Can't be rendered server-side.118      if (_inDOM2.default) {119        if (open) {120          return _reactDom2.default.unstable_createPortal(children, this.getLayer());121        }122        this.unrenderLayer();123      }124      return null;125    }126  }]);127  return Portal;128}(_react2.default.Component);129Portal.defaultProps = {130  open: false131};132Portal.propTypes = process.env.NODE_ENV !== "production" ? {133  children: typeof babelPluginFlowReactPropTypes_proptype_Node === 'function' ? babelPluginFlowReactPropTypes_proptype_Node : require('prop-types').shape(babelPluginFlowReactPropTypes_proptype_Node),134  open: require('prop-types').bool...react.mjs
Source:react.mjs  
1import React from "react"2import ReactDOM from "react-dom"3import ReactDOMServer from "react-dom/server"4const {5  Children,6  cloneElement,7  Component,8  createContext,9  createElement,10  createFactory,11  createRef,12  forwardRef,13  Fragment,14  isValidElement,15  lazy,16  memo,17  Placeholder,18  PureComponent,19  StrictMode,20  Suspense,21  unstable_ConcurrentMode,22  unstable_Profiler,23  version,24  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED25} = React26const h = createElement27const {28  createPortal,29  findDOMNode,30  flushSync,31  hydrate,32  render,33  unmountComponentAtNode,34  unstable_batchedUpdates,35  unstable_createPortal,36  unstable_createRoot,37  unstable_flushControlled,38  unstable_interactiveUpdates,39  unstable_renderSubtreeIntoContainer40} = ReactDOM41const {42  renderToNodeStream,43  renderToStaticMarkup,44  renderToStaticNodeStream,45  renderToString46} = ReactDOMServer47export default {48  Children,49  cloneElement,50  Component,51  createContext,52  createElement,53  createFactory,54  createPortal,55  createRef,56  findDOMNode,57  flushSync,58  forwardRef,59  Fragment,60  h,61  hydrate,62  isValidElement,63  lazy,64  memo,65  Placeholder,66  PureComponent,67  render,68  renderToNodeStream,69  renderToStaticMarkup,70  renderToStaticNodeStream,71  renderToString,72  StrictMode,73  Suspense,74  unmountComponentAtNode,75  unstable_batchedUpdates,76  unstable_ConcurrentMode,77  unstable_createPortal,78  unstable_createRoot,79  unstable_flushControlled,80  unstable_interactiveUpdates,81  unstable_Profiler,82  unstable_renderSubtreeIntoContainer,83  version,84  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED85}86export {87  Children,88  cloneElement,89  Component,90  createContext,91  createElement,92  createFactory,93  createPortal,94  createRef,95  findDOMNode,96  flushSync,97  forwardRef,98  Fragment,99  h,100  hydrate,101  isValidElement,102  lazy,103  memo,104  Placeholder,105  PureComponent,106  render,107  renderToNodeStream,108  renderToStaticMarkup,109  renderToStaticNodeStream,110  renderToString,111  StrictMode,112  Suspense,113  unmountComponentAtNode,114  unstable_batchedUpdates,115  unstable_ConcurrentMode,116  unstable_createPortal,117  unstable_createRoot,118  unstable_flushControlled,119  unstable_interactiveUpdates,120  unstable_Profiler,121  unstable_renderSubtreeIntoContainer,122  version,123  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED...react-dom.js
Source:react-dom.js  
1import {r as reactDom_development}from'./react-dom.development.js';export{r as default}from'./react-dom.development.js';import'./_commonjsHelpers.js';import'./index3.js';import'./react.development.js';import'./checkPropTypes.js';const {2  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED,3  createPortal,4  findDOMNode,5  flushSync,6  hydrate,7  render,8  unmountComponentAtNode,9  unstable_batchedUpdates,10  unstable_createPortal,11  unstable_renderSubtreeIntoContainer,12  version...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.evaluate(() => {7    const div = document.createElement('div');8    div.textContent = 'Hello from Playwright';9    document.body.appendChild(div);10  });11  const portal = await page.evaluateHandle(() => {12    const div = document.createElement('div');13    div.textContent = 'Hello from Portal';14    return document.body.appendChild(div);15  });16  await page.evaluate(portal => {17    unstable_createPortal(portal, document.body);18  }, portal);19  await page.screenshot({ path: 'screenshot.png' });20  await browser.close();21})();22      const div = document.createElement('div');23      div.textContent = 'Hello from HTML';24      document.body.appendChild(div);25      const portal = document.createElement('div');26      portal.textContent = 'Hello from Portal';27      document.body.appendChild(portal);28      unstable_createPortal(portal, document.body);29      const div = document.createElement('div');30      div.textContent = 'Hello from HTML';31      document.body.appendChild(div);32      const portal = document.createElement('div');33      portal.textContent = 'Hello from Portal';34      document.body.appendChild(portal);35      const portal2 = document.createElement('div');36      portal2.textContent = 'Hello from Portal2';37      document.body.appendChild(portal2);38      unstable_createPortal(portal, document.body);39      unstable_createPortal(portal2, document.body);Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.evaluate( () => {7    const element = document.createElement('div');8    element.textContent = 'This is a popup';9    document.body.appendChild(element);10    document.body.appendChild(element);Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const context = await browser.newContext();5  const page = await context.newPage();6  const elementHandle = await page.$('input');7  const portal = await page._delegate.unstable_createPortal(elementHandle);8  await portal.waitForSelector('input');9  await portal.click('input');10  await portal.type('input', 'Hello World');11  await portal.close();12  await browser.close();13})();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  const handle = await page.evaluateHandle(() => document.body);7  const newPage = await page.browserContext().newPage();8  await newPage.evaluate((element) => element.unstable_createPortal(), handle);9  await newPage.waitForLoadState();10  await newPage.screenshot({ path: `screenshot.png` });11  await browser.close();12})();Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({4  });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.setViewportSize({ width: 1200, height: 800 });8  const frame = page.frames().find(f => f.url().includes('iframe.html'));9  const portal = await frame._mainFrame.unstable_createPortal();10  await portal.setViewportSize({ width: 1200, height: 800 });11  await portal.waitForSelector('text=This is a portal');12})();13const { chromium } = require('playwright');14(async () => {15  const browser = await chromium.launch({16  });17  const context = await browser.newContext();18  const page = await context.newPage();19  await page.setViewportSize({ width: 1200, height: 800 });20  const frame = page.frames().find(f => f.url().includes('iframe.html'));21  const portal = await frame._mainFrame.unstable_createPortal();22  await portal.setViewportSize({ width: 1200, height: 800 });23  await portal.waitForSelector('text=This is a portal');24})();Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const portal = await page.unstable_createPortal();6  const content = await portal.page.content();7  console.log(content);8  await browser.close();9})();Using AI Code Generation
1const { chromium } = require('playwright');2const { createPortal } = require('playwright/internal');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const portal = await createPortal(page);8  const popup = await portal.newPage();9  await popup.setContent('Hello from popup!');10  await popup.waitForSelector('text=Hello from popup!');11  await browser.close();12})();13const { chromium } = require('playwright');14const { createPortal } = require('playwright/internal');15(async () => {16  const browser = await chromium.launch();17  const context = await browser.newContext();18  const page = await context.newPage();19  const portal = await createPortal(page);20  const popup = await portal.newPage();21  await popup.setContent('Hello from popup!');22  await popup.waitForSelector('text=Hello from popup!');23  await browser.close();24})();25const { chromium } = require('playwright');26const { createPortal } = require('playwright/internal');27(async () => {28  const browser = await chromium.launch();29  const context = await browser.newContext();30  const page = await context.newPage();31  const portal = await createPortal(page);32  const popup = await portal.newPage();33  await popup.setContent('Hello from popup!');34  await popup.waitForSelector('text=Hello from popup!');35  await browser.close();36})();37const { chromium } = require('playwright');38const { createPortal } = require('playwright/internal');39(async () => {40  const browser = await chromium.launch();41  const context = await browser.newContext();42  const page = await context.newPage();43  const portal = await createPortal(page);44  const popup = await portal.newPage();45  await popup.setContent('Hello from popup!');46  await popup.waitForSelector('text=Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const page = await browser.newPage();5  const popup = await page.context().newPage();6  await page.evaluate(async popup => {7    const { unstable_createPortal } = require('playwright');8    const portal = await unstable_createPortal(popup);9    const popupWindow = portal.window;10    popupWindow.document.body.innerHTML = 'This is popup';11    popupWindow.document.title = 'Popup';12  }, popup);13  await page.click('a');14  await popup.waitForLoadState();15  await popup.close();16  await browser.close();17})();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  const portal = await context.stable_createPortal();7  await portal.run(async () => {8    await page.screenshot({ path: `example.png` });9  });10  await browser.close();11})();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.
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