Best JavaScript code snippet using playwright-internal
subscription-tree.js
Source:subscription-tree.js  
1// HACK: to gain access to the subscription prototype, see below.2var Subscription;3// Use "psuedo-subscription" objects that represent4//   the document levels. 5//6// The rules are:7//   - an outer sub kills it's children, like computations8//   - each inner sub is attached to a document, when the doc is removed,9//     the sub is stopped10//   - child subs pass added/etc/ready to parent sub11//   - parent sub is only ready when all children + itself are ready.12SubscriptionTree = function(parentSubscription, notRoot) {13  var self = this;14  15  // this will definitely work the first time ;)16  if (! notRoot) {17    setSubscriptionPrototype(parentSubscription.constructor);18  }19  20  // it's too late to call Meteor._inherits so let's try this slightly wacky21  //   approach22  _.extend(this.constructor.prototype, Subscription.prototype, subscriptionTreeMethods);23  24  25  // XXX: should we generate a name like flips.0.1?, likewise a _subscriptionId?26  //   for the moment all names are undefined, this will appear a universal sub27  Subscription.call(self, parentSubscription._session);28  29  self._root = ! notRoot;30  self.parent = parentSubscription;31  self._children = [];32  // is this particular subscription ready?33  self._nodeReady = false;34  // is the entire tree of this and it's children ready?35  self._treeReady = false;36  self.parent.onStop(function() {37    self.stop();38  });39}40var subscriptionTreeMethods = {41  // TODO: is this the best name?42  publish: function(handler) {43    // TODO: should we not be so hacky here?44    this._handler = handler;45    this._params = Array.prototype.slice.call(arguments, 1);46    this._runHandler();47  },48  49  publishChild: function(handler /*, arguments */) {50    var child = new SubscriptionTree(this, true);51    this._children.push(child);52    child.publish.apply(child, arguments);53    return child;54  },55  _checkTreeReady: function() {56    var allChildrenReady = _.all(this._children, function(child) {57      return child._treeReady;58    });59    this._treeReady = (allChildrenReady && this._nodeReady);60    if (this._treeReady) { 61      if (this._root) {62        this.parent.ready();63      } else {64        this.parent._checkTreeReady();65      }66    }67  },68  69  // TODO: could take fields as an argument to allow only responding to70  //    changes to relevant fields71  forEach: function(cursor, handler) {72    var self = this;73    74    // : _id => SubscriptionTree75    var forEachChildren = {};76    var addChild = function(id, doc) {77      forEachChildren[id] = self.publishChild(handler, _.extend({_id: id}, doc));78    };79    var handle = cursor.observeChanges({80      added: function(id, doc) {81        addChild(id, doc);82      }, 83      changed: function(id, mod) {84        // if we had fields above, we could short-circuit in some cases here.85      86        // TODO: are there any conditions under which we can re-use the old sub?87        //   - Not in general88        //   - If old + new both returned cursors, could we check if they are89        //       the same? Or is that a pointless optimization?90        var oldChild = forEachChildren[id];91      92        // TODO: there should be an official API to do this?93        var doc = handle._multiplexer._cache.docs.get(id);94        addChild(id, doc);95      96        // We stop the old child after we start the new sub, so if there97        //   are common cursors, we don't teardown and re-establish the98        //   observers -- we just gracefully re-use the old one.99        oldChild.stop();100        self._checkTreeReady();101      },102      removed: function(id) {103        forEachChildren[id].stop();104        delete forEachChildren[id];105        self._checkTreeReady();106      }107    });108  },109  110  ready: function() {111    this._nodeReady = true;112    this._checkTreeReady();113  },114  stop: function() {115    this._removeAllDocuments();116    this._deactivate();117  }118};119var setSubscriptionPrototype = function(s) {120  if (Subscription) {121    return;122  }123   124  Subscription = s;...SquaresPackLayout.js
Source:SquaresPackLayout.js  
...14    };15    var translateElement = function(element, x,y){16        element.x += x;17        element.y += y;18        forEachChildren(element, function(c){translateElement(c,x,y)});19    };20    var getBoundingBox = function(elements){21        if(elements.length > 0){22            var minX = _.min(elements, function(e){return e.x}).x;23            var minY = _.min(elements, function(e){return e.x}).y;24            var maxXelement = _.max(elements, function(e){return e.x + e.dx});25            var maxYelement = _.max(elements, function(e){return e.y + e.dy});26            var maxWidth = maxXelement.x + maxXelement.dx;27            var maxHeight = maxYelement.y + maxYelement.dy;28            return [minX, minY, maxWidth, maxHeight];29        } else {30            return [0,0,size,size];31        }32    };33    var packElements = function(elements){34        elements = _.sortBy(elements, function (e) {return e.dx}).reverse();35        var singleElements = elements.filter(function (e) {return children(e).length == 0});36        if(singleElements.length > 1){37            elements = _.difference(elements, singleElements);38            elements.push(gridPack(singleElements));39        }40        var x = margin;41        var y = margin;42        elements.forEach(function (element) {43            translateElement(element,x,y);44            if(x + element.dx <= y + element.dy){45                x += element.dx + padding;46            } else {47                y += element.dy + padding;48            }49        })50    };51    var gridPack = function(elements){52        var maxDx = _.max(elements, function(e){return e.dx}).dx;53        var maxDy = _.max(elements, function(e){return e.dy}).dy;54        var columns = Math.ceil(Math.sqrt(elements.length));55        var x = 0;56        var y = 0;57        for(var i = 0; i < elements.length; i++){58            var element = elements[i];59            if(i != 0 && i % columns == 0){60                x = 0;61                y += maxDy + padding;62            }63            translateElement(element,x,y);64            x += element.dx + padding;65        }66        return {x: 0, y:0, dx: x, dy: y + maxDy, children: elements, _squarePackDummy : true}67    };68    var recursivePacking = function(root, depth){69        forEachChildren(root, function(child){70            child.parent = root;71            recursivePacking(child, depth + 1);72        });73        var elements = children(root);74        packElements(elements);75        var bbox = getBoundingBox(elements);76        root.x  = 0;77        root.y  = 0;78        root.dx = bbox[2]//Math.max(bbox[2],bbox[3]);79        root.dy = bbox[3]//Math.max(bbox[2],bbox[3]);80        if(elements.length != 0){81            root.dx += margin;82            root.dy += margin;83        }84        root.depth = depth;85    };86    self.nodes = function(root){87        var list = [root];88        forEachChildren(root, function(child){89            list = list.concat(self.nodes(child));90        });91        return list;92    };93    self.pack = function(root){94        recursivePacking(root,0);95        root.dx = Math.max(root.dx,root.dy);96        root.dy = root.dx;97    };98    return self;...lapaLine.js
Source:lapaLine.js  
...19        }20    }21    go() {22        this.startAnimate();23        this.forEachChildren((child) => {24            child.go();25        })26    }27    stop(data = []) {28        this.forEachChildren((child, i) => {29            child.stop(data[i]);30        })31    }32    forEachChildren(fn) {33        for (let i = 0, l = this.numChildren; i < l; i++) {34            fn(this.getChildAt(i), i);35        }36    }37    startAnimate() {38        Laya.Tween.from(this, { y: -100 }, 100, Laya.Ease.backOut);39    }40    // ææ¾è¿çº¿å¨ç»41    playLine(lineNumber, posLineArr, num, animateCB) {42        // ææ¾çå
ç´ ç´¢å¼43        let i = posLineArr.indexOf(lineNumber);44        let arr = [0, 0, 0];45        arr[i] = 1;46        arr.unshift(0);47        // æ¯å¦ææ¾ç¿»é±48        let dollarIndex = this.initIndex < num;49        this.forEachChildren((child, i) => {50            child.play(arr[i], dollarIndex, animateCB);51        })52    }53    // ææ¾ç¾æå¨ç»54    playBaida(picItem, animateCB) {55        this.forEachChildren((child, i) => {56            let bool = picItem[i] === 7;57            child.play(bool, true, animateCB);58        })59    }60    // 忢åçå¨ç»61    stopHandler(i) {62        if (i === 3) {63            Laya.Tween.from(this, { y: 200 }, 150, Laya.Ease.backOut, Laya.Handler.create(this, () => {64                this.endCallBack(this.initIndex);65            }));66        }67    }...table.js
Source:table.js  
...38			},39		]40	}41	const newChildren = []42	forEachChildren(children, (child, index) => {43		newChildren.push(44			<View key={index} style={[TableStyle.cell_regular, getCellStyle(index)]}>45				{child}46			</View>47		)48	})49	return React.createElement(50		Row,51		{ style: header ? null : TableStyle.row_regular },52		...newChildren53	)54}55export function Table(props) {56	const { proportions, rowStyle, children, ...nextProps } = props57	const newChildren = []58	forEachChildren(children, (child) => {59		newChildren.push(React.cloneElement(child, { proportions: proportions }))60	})61	return React.createElement(Column, nextProps, ...newChildren)...test.js
Source:test.js  
...19forEachChildrenBtn.onclick = function(){20    var params1 = (new Function('return '+forEachChildrenInputs[0].value))();21    var params2 = new Function('item','index',forEachChildrenInputs[1].value);22    var params3 = (new Function('return '+forEachChildrenInputs[2].value))();23    forEachChildren(params1,params2,params3)24}25//binaryPlus26var binaryPlusContainer = document.getElementById('binaryPlus')27var binaryPlusInputs = binaryPlusContainer.getElementsByTagName('input')28var binaryPlusBtn = binaryPlusContainer.getElementsByTagName('button')[0]29binaryPlusBtn.onclick = function(){30    var params1 = (new Function('return '+binaryPlusInputs[0].value))();31    var params2 = (new Function('return '+binaryPlusInputs[1].value))();32    binaryPlusInputs[2].value = binaryPlus(params1,params2)...rk_layout.js
Source:rk_layout.js  
1var _ = require('lodash')2var foreachChildren = function (layoutInfo, callback) {3    (callback)(layoutInfo);4    var children = layoutInfo.children;5    if (children) {6        if (_.isArray(children)) {7            for (var i = 0, len = children.length; i < len; i++) {8                children[i]._parent = layoutInfo;9                foreachChildren(children[i], callback)10            }11        } else {12            for (var key in children) {13                var arr = children[key];14                for (var i = 0, len = arr.length; i < len; i++) {15                    arr[i]._parent = layoutInfo;16                    foreachChildren(arr[i], callback)17                }18            }19        }20    }21};22module.exports = {23    foreachChildren: foreachChildren...index.js
Source:index.js  
1import forEach from './libs/forEach'2import forEachChildren from './libs/forEachChildren'3import binaryPlus from './libs/binaryPlus'4export {5    forEach,6    forEachChildren,7    binaryPlus...ReactChildren.js
Source:ReactChildren.js  
1function forEachChildren() {}2export default {3  map: forEachChildren,...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.$('input[name="q"]');7  const input = handle.asElement();8  const children = await input._client.send('DOM.getFlattenedDocument');9  children.forEach((child) => {10    console.log(child);11  });12  await browser.close();13})();14{ nodeId: 2, backendNodeId: 2, nodeType: 1, nodeName: 'HTML', localName: 'html', nodeValue: '', childNodeCount: 1, children: [ [Object] ], attributes: [] }15{ nodeId: 3, backendNodeId: 3, nodeType: 1, nodeName: 'HEAD', localName: 'head', nodeValue: '', childNodeCount: 1, children: [ [Object] ], attributes: [] }16{ nodeId: 4, backendNodeId: 4, nodeType: 1, nodeName: 'BODY', localName: 'body', nodeValue: '', childNodeCount: 1, children: [ [Object] ], attributes: [] }17{ nodeId: 5, backendNodeId: 5, nodeType: 1, nodeName: 'DIV', localName: 'div', nodeValue: '', childNodeCount: 1, children: [ [Object] ], attributes: [ [Object], [Object] ] }18{ nodeId: 6, backendNodeId: 6, nodeType: 1, nodeName: 'DIV', localName: 'div', nodeValue: '', childNodeCount: 1, children: [ [Object] ], attributes: [ [Object], [Object] ] }19{ nodeId: 7, backendNodeId: 7, nodeType: 1, nodeName: 'DIV', localName: 'div', nodeValue: '', childNodeCount: 1, children: [ [Object] ], attributes: [ [Object], [Object], [Object] ] }20{ nodeId: 8, backendNodeId: 8, nodeType: 1, nodeName: 'DIV', localName: 'div', nodeValue: '', childNodeCount: 3, children: [ [Object], [Object], [Object] ], attributes:Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.$eval('h1', (element) => {7    element.forEachChildren((childNode) => {8      console.log(childNode.textContent);9    });10  });11  await browser.close();12})();13elementHandle.forEachChildren(callback[, options])14elementHandle.forEachChildren(async callback[, options])15const { chromium } = require('playwright');16(async () => {17  const browser = await chromium.launch();18  const context = await browser.newContext();19  const page = await context.newPage();20  await page.$eval('h1', (Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.evaluate(() => {7    const element = document.querySelector('.navbar__inner');8    element.forEachChild(child => {9      console.log(child);10    });11  });12  await browser.close()Using AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  const search = await page.$('input[name="q"]');7  const searchInput = await search._client.send('DOM.resolveNode', { nodeId: search._nodeId });8  const children = await searchInput.objectId._client.send('DOM.getFlattenedDocument', { depth: 1, pierce: false });9  await children.nodes.forEach(node => console.log(node.localName));10  await browser.close();11})();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.waitForSelector('text=Get started');6  const element = await page.$('text=Get started');7  element.forEachChildren(async (child) => {8    console.log(child);9  });10  await browser.close();11})();12{ _guid: 'elementHandle-1',13   Page {14      BrowserContext {Using AI Code Generation
1const playwright = require('playwright');2(async () => {3const browser = await playwright['chromium'].launch();4const context = await browser.newContext();5const page = await context.newPage();6await page.waitForSelector('input[title="Search"]');7await page.fill('input[title="Search"]', 'Playwright');8await page.keyboard.press('Enter');9await page.waitForSelector('h3');10await page.forEachChild('h3', (element) => {11console.log(element.textContent);12});13await browser.close();14})();Using AI Code Generation
1const { chromium } = require('playwright');2const { forEachChild } = require('playwright/lib/client/selectorEngine');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const elements = await page.$$('input');8  elements.forEach(element => {9    console.log(element.name);10  });11  await browser.close();12})();13const { chromium } = require('playwright');14(async () => {15  const browser = await chromium.launch();16  const context = await browser.newContext();17  const page = await context.newPage();18  const elements = await page.$$('input');19  elements.forEach(element => {20    console.log(element.name);21  });22  await browser.close();23})();24const { chromium } = require('playwright');25(async () => {26  const browser = await chromium.launch();27  const context = await browser.newContext();28  const page = await context.newPage();29  const elements = await page.$$('input');30  elements.forEach(element => {31    console.log(element.name);32  });33  await browser.close();34})();35const { chromium } = require('playwright');36(async () => {37  const browser = await chromium.launch();38  const context = await browser.newContext();39  const page = await context.newPage();40  const elements = await page.$$('input');41  elements.forEach(element => {42    console.log(element.name);43  });44  await browser.close();45})();46const { chromium } = require('playwright');47(async () => {Using AI Code Generation
1const { Page } = require('@playwright/test/lib/server/page');2const { Internal } = require('@playwright/test/lib/server/internal');3const { ElementHandle } = require('@playwright/test/lib/server/dom');4const { Frame } = require('@playwright/test/lib/server/frame');5const { JSHandle } = require('@playwright/test/lib/server/jsHandle');6async function main() {7  const page = await Page.create(null, null, null, null, null, null, null, null, null, null, nUsing AI Code Generation
1import { test, expect } from "@playwright/test";2import { forEachChild } from "@playwright/test/lib/internal/selectorEngine";3import { Locator } from "@playwright/test/lib/locator";4test("Test", async ({ page }) => {5  const searchBox = await page.$("input[name='q']");6  await searchBox.fill("Playwright");7  await page.waitForTimeout(1000);8  await page.keyboard.press("Enter");9  await page.waitForTimeout(1000);10  const searchResults = await page.$("div#search");11  const searchResultsChild = await searchResults.forEachChild((locator) => {12    locator;13  });14  console.log(searchResultsChild);15});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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