Best JavaScript code snippet using wpt
custom-elements-helpers.js
Source:custom-elements-helpers.js  
...26            super();27            log.push(create_constructor_log(this));28        }29        attributeChangedCallback(...args) {30            log.push(create_attribute_changed_callback_log(this, ...args));31        }32        connectedCallback() { log.push(create_connected_callback_log(this)); }33        disconnectedCallback() { log.push(create_disconnected_callback_log(this)); }34        adoptedCallback(oldDocument, newDocument) { log.push({type: 'adopted', element: this, oldDocument: oldDocument, newDocument: newDocument}); }35    }36    CustomElement.observedAttributes = observedAttributes;37    window.customElements.define(name, CustomElement);38    return {39        name: name,40        class: CustomElement,41        takeLog: function () {42            let currentLog = log; log = [];43            currentLog.types = () => currentLog.map((entry) => entry.type);44            currentLog.last = () => currentLog[currentLog.length - 1];45            return currentLog;46        }47    };48}49function create_constructor_log(element) {50    return {type: 'constructed', element: element};51}52function assert_constructor_log_entry(log, element) {53    assert_equals(log.type, 'constructed');54    assert_equals(log.element, element);55}56function create_connected_callback_log(element) {57    return {type: 'connected', element: element};58}59function assert_connected_log_entry(log, element) {60    assert_equals(log.type, 'connected');61    assert_equals(log.element, element);62}63function create_disconnected_callback_log(element) {64    return {type: 'disconnected', element: element};65}66function assert_disconnected_log_entry(log, element) {67    assert_equals(log.type, 'disconnected');68    assert_equals(log.element, element);69}70function assert_adopted_log_entry(log, element) {71    assert_equals(log.type, 'adopted');72    assert_equals(log.element, element);73}74function create_adopted_callback_log(element) {75    return {type: 'adopted', element: element};76}77function create_attribute_changed_callback_log(element, name, oldValue, newValue, namespace) {78    return {79        type: 'attributeChanged',80        element: element,81        name: name,82        namespace: namespace,83        oldValue: oldValue,84        newValue: newValue,85        actualValue: element.getAttributeNS(namespace, name)86    };87}88function assert_attribute_log_entry(log, expected) {89    assert_equals(log.type, 'attributeChanged');90    assert_equals(log.name, expected.name);91    assert_equals(log.oldValue, expected.oldValue);92    assert_equals(log.newValue, expected.newValue);93    assert_equals(log.actualValue, expected.newValue);94    assert_equals(log.namespace, expected.namespace);95}96function define_new_custom_element(observedAttributes) {97    let log = [];98    let name = 'custom-element-' + define_new_custom_element._element_number++;99    class CustomElement extends HTMLElement {100        constructor() {101            super();102            log.push({type: 'constructed', element: this});103        }104        attributeChangedCallback(...args) {105            log.push(create_attribute_changed_callback_log(this, ...args));106        }107        connectedCallback() { log.push({type: 'connected', element: this}); }108        disconnectedCallback() { log.push({type: 'disconnected', element: this}); }109        adoptedCallback(oldDocument, newDocument) { log.push({type: 'adopted', element: this, oldDocument: oldDocument, newDocument: newDocument}); }110    }111    CustomElement.observedAttributes = observedAttributes;112    customElements.define(name, CustomElement);113    return {114        name: name,115        class: CustomElement,116        takeLog: function () {117            let currentLog = log; log = [];118            currentLog.types = () => currentLog.map((entry) => entry.type);119            currentLog.last = () => currentLog[currentLog.length - 1];120            return currentLog;121        }122    };123}124define_new_custom_element._element_number = 1;125function define_build_in_custom_element(observedAttributes, extendedElement, extendsOption) {126    let log = [];127    let name = 'custom-element-' + define_build_in_custom_element._element_number++;128    class CustomElement extends extendedElement {129        constructor() {130            super();131            log.push({type: 'constructed', element: this});132        }133        attributeChangedCallback(...args) {134            log.push(create_attribute_changed_callback_log(this, ...args));135        }136        connectedCallback() { log.push({type: 'connected', element: this}); }137        disconnectedCallback() { log.push({type: 'disconnected', element: this}); }138        adoptedCallback(oldDocument, newDocument) { log.push({type: 'adopted', element: this, oldDocument: oldDocument, newDocument: newDocument}); }139    }140    CustomElement.observedAttributes = observedAttributes;141    customElements.define(name, CustomElement, { extends: extendsOption});142    return {143        name: name,144        class: CustomElement,145        takeLog: function () {146            let currentLog = log; log = [];147            currentLog.types = () => currentLog.map((entry) => entry.type);148            currentLog.last = () => currentLog[currentLog.length - 1];...Using AI Code Generation
1wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");2wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");3wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");4wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");5wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");6wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");7wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");8wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");9wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");10wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");11wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");12wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");13wpt.create_attribute_changed_callback_log("attr1", "attr2", "attr3");Using AI Code Generation
1var wpt = require('webpagetest');2var webpagetest = new wpt('API_KEY');3webpagetest.create_attribute_changed_callback_log('testId', 'attribute', 'callbackUrl', function(err, data) {4  if(err) return console.error(err);5  console.log(data);6});7var wpt = require('webpagetest');8var webpagetest = new wpt('API_KEY');9webpagetest.create_attribute_changed_callback_log('testId', 'attribute', 'callbackUrl', function(err, data) {10  if(err) return console.error(err);11  console.log(data);12});13var wpt = require('webpagetest');14var webpagetest = new wpt('API_KEY');15webpagetest.create_attribute_changed_callback_log('testId', 'attribute', 'callbackUrl', function(err, data) {16  if(err) return console.error(err);17  console.log(data);18});19var wpt = require('webpagetest');20var webpagetest = new wpt('API_KEY');21webpagetest.create_attribute_changed_callback_log('testId', 'attribute', 'callbackUrl', function(err, data) {22  if(err) return console.error(err);23  console.log(data);24});25var wpt = require('webpagetest');26var webpagetest = new wpt('API_KEY');27webpagetest.create_attribute_changed_callback_log('testId', 'attribute', 'callbackUrl', function(err, data) {28  if(err) return console.error(err);29  console.log(data);30});31var wpt = require('webpagetest');32var webpagetest = new wpt('API_KEY');33webpagetest.create_attribute_changed_callback_log('testId', 'attribute', 'callbackUrl', function(err, data) {34  if(err) return console.error(err);35  console.log(data);36});Using AI Code Generation
1var wpt = require("wpt");2wpt.create_attribute_changed_callback_log("test");3var wpt = require("wpt");4wpt.create_attribute_changed_callback_log("test");5var wpt = require("wpt");6wpt.create_attribute_changed_callback_log("test");7var wpt = require("wpt");8wpt.create_attribute_changed_callback_log("test");9var wpt = require("wpt");10wpt.create_attribute_changed_callback_log("test");11var wpt = require("wpt");12wpt.create_attribute_changed_callback_log("test");13var wpt = require("wpt");14wpt.create_attribute_changed_callback_log("test");15var wpt = require("wpt");16wpt.create_attribute_changed_callback_log("test");17var wpt = require("wpt");18wpt.create_attribute_changed_callback_log("test");19var wpt = require("wpt");20wpt.create_attribute_changed_callback_log("test");21var wpt = require("wpt");22wpt.create_attribute_changed_callback_log("test");23var wpt = require("wpt");24wpt.create_attribute_changed_callback_log("test");Using AI Code Generation
1function callback(attrName, oldVal, newVal)2{3    log("attribute changed: " + attrName + " from " + oldVal + " to " + newVal);4}5function runTest()6{7    var div = document.createElement("div");8    div.setAttribute("id", "myDiv");9    document.body.appendChild(div);10    wpt.create_attribute_changed_callback_log(div, "id", callback);11    div.setAttribute("id", "myDiv1");12    div.setAttribute("id", "myDiv2");13}14runTest();Using AI Code Generation
1WPT.prototype.create_attribute_changed_callback_log = function(callbackName) {2    var wpt = this;3    window[callbackName] = function(event) {4        wpt.log(event.attrName + "=" + event.newValue);5    };6};7WPT.prototype.create_attribute_changed_callback = function(callbackName, callback) {8    var wpt = this;9    window[callbackName] = function(event) {10        wpt[callback](event.attrName + "=" + event.newValue);11    };12};Using AI Code Generation
1function create_attribute_changed_callback_log(attributeName, log)2{3  var log = document.getElementById("log");4  var wpt = document.getElementById("wpt");5  wpt.create_attribute_changed_callback(attributeName);6  log.innerHTML = log.innerHTML + "create_attribute_changed_callback: " + attributeName + "<BR>";7}8function create_attribute_changed_callback_log(attributeName)9{10  var log = document.getElementById("log");11  var wpt = document.getElementById("wpt");12  wpt.create_attribute_changed_callback(attributeName);13  log.innerHTML = log.innerHTML + "create_attribute_changed_callback: " + attributeName + "<BR>";14}15function create_attribute_changed_callback_log(attributeName)16{17  var log = document.getElementById("log");18  var wpt = document.getElementById("wpt");19  wpt.create_attribute_changed_callback(attributeName);20  log.innerHTML = log.innerHTML + "create_attribute_changed_callback: " + attributeName + "<BR>";21}22function create_attribute_changed_callback_log(attributeName)23{24  var log = document.getElementById("log");25  var wpt = document.getElementById("wpt");26  wpt.create_attribute_changed_callback(attributeName);27  log.innerHTML = log.innerHTML + "create_attribute_changed_callback: " + attributeName + "<BR>";28}29function create_attribute_changed_callback_log(attributeName)30{31  var log = document.getElementById("log");32  var wpt = document.getElementById("wpt");33  wpt.create_attribute_changed_callback(attributeName);34  log.innerHTML = log.innerHTML + "create_attribute_changed_callback: " + attributeName + "<BR>";35}36function create_attribute_changed_callback_log(attributeName)37{38  var log = document.getElementById("log");39  var wpt = document.getElementById("wpt");40  wpt.create_attribute_changed_callback(attributeName);Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Get 100 minutes of automation test minutes FREE!!
