How to use simpleNormalizeChildren method in Playwright Internal

Best JavaScript code snippet using playwright-internal

create-element.js

Source: create-element.js Github

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...108 */​109 if (normalizationType === ALWAYS_NORMALIZE) {110 children = normalizeChildren(children)111 } else if (normalizationType === SIMPLE_NORMALIZE) {112 children = simpleNormalizeChildren(children)113 }114 /​**115 * 如果 `tag` 是个字符串116 * 1. tag 是 html 的保留标签,根据tag创建 VNode117 * 2. tag 是 组件 ,调用 `createComponent` 方法,创建组件。118 * 3. 根据传入的参数,创建 VNode。119 * 如果 `tag` 不是个字符串,根据参数调用 `createComponent` 方法创建组件120 */​121 let vnode, ns122 if (typeof tag === 'string') {123 let Ctor124 ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag)125 if (config.isReservedTag(tag)) {126 /​/​ platform built-in elements...

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runtime-helpers.js

Source: runtime-helpers.js Github

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...53 this.open = open54 this.close = close55 if (children) {56 this.children = normalizationType === 157 ? simpleNormalizeChildren(children)58 : normalizationType === 259 ? normalizeChildren(children)60 : children61 } else {62 this.children = void 063 }64 }65}66function renderStringNode (67 open,68 close,69 children,70 normalizationType71) {...

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createElement.js

Source: createElement.js Github

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...3_createElement方法有五个参数,context表示VNode的上下文环境,tag表示标签,data表示VNode的数据,children表示当前VNode的子节点,4normalizationType表示子节点规范的类型,主要参考render函数是编译生成还是用户手写的5createElement中的两个重点的流程:children的规范化以及VNode的创建6children的规范化:7_createElement 接收的第 4 个参数 children 是任意类型的,因此我们需要把它们规范成 VNode 类型。这里根据 normalizationType 的不同,调用了 normalizeChildren(children) 和 simpleNormalizeChildren(children) 方法8simpleNormalizeChildren 方法调用场景是 render 函数是编译生成的。normalizeChildren 方法的调用场景有 2 种,一个场景是 render 函数是用户手写的,当children只有一个节点的时候,Vue.js 从接口层面允许用户把 children 写成基础类型用来创建单个简单的文本节点,9这种情况会调用 createTextVNode 创建一个文本节点的 VNode;另一个场景是当编译 slot、v -for 的时候会产生嵌套数组的情况,会调用 normalizeArrayChildren 方法,接下来看一下它的实现:10normalizeArrayChildren 主要的逻辑就是遍历 children,获得单个节点 c,然后对 c 的类型判断,如果是一个数组类型,则递归调用 normalizeArrayChildren; 如果是基础类型,则通过 createTextVNode 方法转换成 VNode 类型;...

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render.js

Source: render.js Github

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...5 vm._s = toString6 vm._e = createEmptyVNode7}8function createElement (tag, data={}, children=[]){9 children = simpleNormalizeChildren(children)10 return new VNode(tag, data, children, undefined, undefined)11}12export function createTextVNode (val) {13 return new VNode(undefined, undefined, undefined, String(val))14}15export function toString (val) {16 return val == null17 ? ''18 : Array.isArray(val)19 ? JSON.stringify(val, null, 2)20 : String(val)21 }22export function createEmptyVNode (text) {23 const node = new VNode()...

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vnode.js

Source: vnode.js Github

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...18export function createElementVNode(tag, data, children) {19 if (!tag) {20 return createEmptyVNode()21 }22 return new VNode(tag, data, simpleNormalizeChildren(children), undefined, undefined)23}24export const createEmptyVNode = () => {25 const node = new VNode()26 node.text = ''27 return node28}29export function createTextVNode (val) {30 return new VNode(undefined, undefined, undefined, String(val))...

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flat-one.js

Source: flat-one.js Github

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1/​/​ 二维拍平成一维数组2function simpleNormalizeChildren(children) {3 for (let i = 0; i < children.length; i++) {4 if (Array.isArray(children[i])) {5 /​/​ 这里的children最多只有二维6 return Array.prototype.concat.apply([], children)7 }8 }9 return children10}11/​/​ 因为是 apply 方法,所以参数的第一维数组其实就被拆开了,(如果还不理解请查看 apply 模拟实现)12/​/​ 这段代码实际上就等同于13/​/​ [].concat(1,2,3,[4,5])...

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dom.js

Source: dom.js Github

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...11 }12 return children13}14var testArr = [1, 2, [3, 4], [5, 6, 7], 9];15console.log(simpleNormalizeChildren(testArr));...

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拍平数组.dev.js

Source: 拍平数组.dev.js Github

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1"use strict";2function simpleNormalizeChildren(children) {3 for (var i = 0; i < children.length; i++) {4 if (Array.isArray(children[i])) {5 return Array.prototype.concat.apply([], children);6 }7 }8 return children;9}10var arr = [1, 2, [5, 6, 7], 3, [5, 6, 7], 4];...

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Using AI Code Generation

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1const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');2const { parseSelector } = require('playwright/​lib/​client/​selectorParser');3const { parseSelector } = require('playwright/​lib/​client/​selectorParser');4const { parseSelector } = require('playwright/​lib/​client/​selectorParser');5const selector = 'css=div > span';6const parsed = parseSelector(selector);7const { name, args, body } = parsed;8const normalized = simpleNormalizeChildren(body, name, args);9console.log(JSON.stringify(normalized, null, ' '));10{11 "body": {12 "body": {13 }14 }15}

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Using AI Code Generation

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1const { simpleNormalizeChildren } = require('playwright-core/​lib/​server/​dom.js');2const { parse } = require('playwright-core/​lib/​server/​common/​html.js');3const { ElementHandle } = require('playwright-core/​lib/​server/​dom.js');4const { JSHandle } = require('playwright-core/​lib/​server/​jsHandle.js');5`;6const document = parse(html);7const parent = document.getElementById('parent');8const child1 = document.getElementById('child1');9const child2 = document.getElementById('child2');10const child3 = document.getElementById('child3');11const elementHandle = new ElementHandle(null, null, parent);12const jsHandle = new JSHandle(null, null, parent);13const arrayHandle = new JSHandle(null, null, [child1, child2, child3]);14(async () => {15 console.log(await simpleNormalizeChildren(elementHandle));16 console.log(await simpleNormalizeChildren(jsHandle));17 console.log(await simpleNormalizeChildren(arrayHandle));18})();

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Using AI Code Generation

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1const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');2const { parseSelector } = require('playwright/​lib/​client/​selectorParser');3const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');4const { parseSelector } = require('playwright/​lib/​client/​selectorParser');5const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');6const { parseSelector } = require('playwright/​lib/​client/​selectorParser');7const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');8const { parseSelector } = require('playwright/​lib/​client/​selectorParser');9const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');10const { parseSelector } = require('playwright/​lib/​client/​selectorParser');11const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');12const { parseSelector } = require('playwright/​lib/​client/​selectorParser');13const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');14const { parseSelector } = require('playwright/​lib/​client/​selectorParser');15const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');16const { parseSelector } = require('playwright/​lib/​client/​selectorParser');17const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');18const { parseSelector } = require('playwright/​lib/​client/​selectorParser');19const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');20const { parseSelector } = require('playwright/​lib/​client/​selectorParser');21const { simpleNormalizeChildren } = require('playwright/​lib/​client/​selectorEngine');22const { parseSelector } = require('playwright/​lib/​client/​selectorParser');

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Using AI Code Generation

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1const { simpleNormalizeChildren } = require('playwright/​lib/​server/​dom.js');2 { type: 'text', value: 'Hello' },3 { type: 'text', value: 'World' },4 { type: 'text', value: '!' }5];6const result = simpleNormalizeChildren(children);7console.log(result);8const { simpleNormalizeChildren } = require('playwright/​lib/​server/​dom.js');9 { type: 'text', value: 'Hello' },10 { type: 'text', value: 'World' },11 { type: 'text', value: '!' }12];13const result = simpleNormalizeChildren(children);14console.log(result);15const { simpleNormalizeChildren } = require('playwright/​lib/​server/​dom.js');16 { type: 'text', value: 'Hello' },17 { type: 'text', value: 'World' },18 { type: 'text', value: '!' }19];20const result = simpleNormalizeChildren(children);21console.log(result);22const { simpleNormalizeChildren } = require('playwright/​lib/​server/​dom.js');23 { type: 'text', value: 'Hello' },24 { type: 'text', value: 'World' },25 { type: 'text', value: '!' }26];27const result = simpleNormalizeChildren(children);28console.log(result);29const { simpleNormalizeChildren } = require('playwright/​lib/​server/​dom.js');30 { type: 'text', value: 'Hello' },31 { type: 'text', value: 'World' },32 { type: 'text', value: '!' }33];34const result = simpleNormalizeChildren(children);35console.log(result);36const { simpleNormalizeChildren } = require('playwright/​lib

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Using AI Code Generation

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1const { simpleNormalizeChildren } = require('playwright/​lib/​server/​dom.js');2const { ElementHandle } = require('playwright/​lib/​server/​dom.js');3const elementHandle = new ElementHandle(null, null, 'div');4const children = [elementHandle];5const normalizedChildren = simpleNormalizeChildren(children);6const normalizedChildren = simpleNormalizeChildren(null);7const normalizedChildren = simpleNormalizeChildren(undefined);8const normalizedChildren = simpleNormalizeChildren([]);9const normalizedChildren = simpleNormalizeChildren('string');10const normalizedChildren = simpleNormalizeChildren(1);11const normalizedChildren = simpleNormalizeChildren(true);

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Using AI Code Generation

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1const { simpleNormalizeChildren } = require('playwright/​lib/​server/​dom.js');2const { createJSHandle } = require('playwright/​lib/​server/​injected/​injectedScript.js');3const element = document.createElement('div');4element.innerHTML = '<div><p>hello</​p></​div>';5const children = simpleNormalizeChildren(element);6for (const child of children) {7 console.log(createJSHandle(child).jsonValue());8}9{ type: 'node', value: { nodeId: 1 } }10{ type: 'node', value: { nodeId: 2 } }

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Using AI Code Generation

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1const {simpleNormalizeChildren} = require('playwright/​lib/​client/​structs.js');2const {ElementHandle} = require('playwright/​lib/​client/​structs.js');3let elementHandle = new ElementHandle();4let children = await elementHandle.$$('div');5let normalizedChildren = await simpleNormalizeChildren(children);6console.log(normalizedChildren);7 ElementHandle {8 channel: Channel {9 connection: Connection { guid: 'connection-0', events: [EventEmitter] },10 },11 events: EventEmitter { _events: {}, _eventsCount: 0 },12 },13 ElementHandle {14 channel: Channel {15 connection: Connection { guid: 'connection-0', events: [EventEmitter] },16 },17 events: EventEmitter { _events: {}, _eventsCount: 0 },18 },19 ElementHandle {20 channel: Channel {21 connection: Connection { guid: 'connection-0', events: [EventEmitter] },22 },23 events: EventEmitter { _events: {}, _eventsCount: 0 },24 }25const {simpleNormalizeChildren} = require('playwright/​lib/​client/​structs.js');26const {ElementHandle} = require('playwright/​lib/​client/​structs.js');27let elementHandle = new ElementHandle();28let children = await elementHandle.$$('div');29let normalizedChildren = await simpleNormalizeChildren(children);30let textContent = [];31for (let i = 0; i < normalizedChildren.length; i++) {32 textContent.push(await normalizedChildren[i].textContent());33}34console.log(textContent);

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Using AI Code Generation

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1const { simpleNormalizeChildren } = require('playwright/​lib/​client/​helper');2const children = [{ name: 'div', attributes: { id: 'div1' } }];3const normalizedChildren = simpleNormalizeChildren(children);4console.log(normalizedChildren);5[ { name: 'div', attributes: { id: 'div1' } } ]6const { simpleNormalizeChildren } = require('playwright/​lib/​client/​helper');7const children = [{ name: 'div', attributes: { id: 'div1' } }];8const normalizedChildren = simpleNormalizeChildren(children, 'div');9console.log(normalizedChildren);10[ { name: 'div', attributes: { id: 'div1' } } ]11const { simpleNormalizeChildren } = require('playwright/​lib/​client/​helper');12const children = [{ name: 'div', attributes: { id: 'div1' } }];13const normalizedChildren = simpleNormalizeChildren(children, 'span');14console.log(normalizedChildren);15[ { name: 'div', attributes: { id: 'div1' } } ]16const { simpleNormalizeChildren } = require('playwright/​lib/​client/​helper');17const children = [{ name: 'div', attributes: { id: 'div1' } }];18const normalizedChildren = simpleNormalizeChildren(children, 'div', 'p');19console.log(normalizedChildren);20[ { name: 'div', attributes: { id: 'div1' } } ]21const { simpleNormalizeChildren } = require('playwright/​lib/​client/​helper');22const children = [{ name: 'div', attributes: { id: 'div1' } }];23const normalizedChildren = simpleNormalizeChildren(children, 'div', 'p', 'span');24console.log(normalizedChildren);25[ { name: 'div', attributes: { id: '

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Using AI Code Generation

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1const { simpleNormalizeChildren } = require('@playwright/​test/​lib/​runner');2const { expect } = require('chai');3const child1 = {4 fn: async ({}, testInfo) => {5 console.log('child1');6 },7 location: {8 },9};10const child2 = {11 fn: async ({}, testInfo) => {12 console.log('child2');13 },14 location: {15 },16};17const child3 = {18 fn: async ({}, testInfo) => {19 console.log('child3');20 },21 location: {22 },23};24const child4 = {25 fn: async ({}, testInfo) => {26 console.log('child4');27 },28 location: {29 },30};31const child5 = {32 fn: async ({}, testInfo) => {33 console.log('child5');34 },35 location: {36 },37};38const child6 = {39 fn: async ({}, testInfo) => {40 console.log('child6');41 },42 location: {43 },44};45const child7 = {46 fn: async ({}, testInfo) => {47 console.log('child7');48 },49 location: {

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Using AI Code Generation

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1const { simpleNormalizeChildren } = require('playwright/​lib/​server/​dom.js');2const { parse } = require('playwright/​lib/​server/​common/​parser.js');3const normalizedNode = simpleNormalizeChildren(node);4console.log(normalizedNode);5const textContent = normalizedNode.textContent;6console.log(textContent);7const href = normalizedNode.attributes.href;8console.log(href);9const nodeName = normalizedNode.nodeName;10console.log(nodeName);11const nodeValue = normalizedNode.nodeValue;12console.log(nodeValue);13const childNodes = normalizedNode.childNodes;14console.log(childNodes);15const parentNode = normalizedNode.parentNode;16console.log(parentNode);17const firstChild = normalizedNode.firstChild;18console.log(firstChild);19const lastChild = normalizedNode.lastChild;20console.log(lastChild);21const previousSibling = normalizedNode.previousSibling;22console.log(previousSibling);23const nextSibling = normalizedNode.nextSibling;24console.log(nextSibling);25const attributes = normalizedNode.attributes;26console.log(attributes);27const namespaceURI = normalizedNode.namespaceURI;28console.log(namespaceURI);29const nodeType = normalizedNode.nodeType;30console.log(nodeType);31const ownerDocument = normalizedNode.ownerDocument;32console.log(ownerDocument);33const isContentEditable = normalizedNode.isContentEditable;34console.log(isContentEditable);35const isElementContentWhitespace = normalizedNode.isElementContentWhitespace;36console.log(isElementContentWhitespace);

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StackOverFlow community discussions

Questions
Discussion

Jest + Playwright - Test callbacks of event-based DOM library

firefox browser does not start in playwright

Is it possible to get the selector from a locator object in playwright?

How to run a list of test suites in a single file concurrently in jest?

Running Playwright in Azure Function

firefox browser does not start in playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})
https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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