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How to use define_new_custom_element method in wpt

Best JavaScript code snippet using wpt

reactions.js

Source:reactions.js

...3    let container = document.createElement('div');4    container.appendChild(document.createElement('div'));5    document.body.appendChild(container);6    test(function () {7        var element = define_new_custom_element();8        var instance = document.createElement(element.name);9        assert_array_equals(element.takeLog().types(), ['constructed']);10        testFunction(container, instance);11        assert_array_equals(element.takeLog().types(), ['connected']);12    }, name + ' must enqueue a connected reaction');13    test(function () {14        var element = define_new_custom_element();15        var instance = document.createElement(element.name);16        assert_array_equals(element.takeLog().types(), ['constructed']);17        var newDoc = document.implementation.createHTMLDocument();18        testFunction(container, instance);19        assert_array_equals(element.takeLog().types(), ['connected']);20        testFunction(newDoc.documentElement, instance);21        assert_array_equals(element.takeLog().types(), ['disconnected', 'adopted', 'connected']);22    }, name + ' must enqueue a disconnected reaction, an adopted reaction, and a connected reaction when the custom element was in another document');23    container.parentNode.removeChild(container);24}25function testNodeDisconnector(testFunction, name) {26    let container = document.createElement('div');27    container.appendChild(document.createElement('div'));28    document.body.appendChild(container);29 30    test(function () {31        var element = define_new_custom_element();32        var instance = document.createElement(element.name);33        assert_array_equals(element.takeLog().types(), ['constructed']);34        container.appendChild(instance);35        assert_array_equals(element.takeLog().types(), ['connected']);36        testFunction(instance, window);37        assert_array_equals(element.takeLog().types(), ['disconnected']);38    }, name + ' must enqueue a disconnected reaction');39    container.parentNode.removeChild(container);40}41function testInsertingMarkup(testFunction, name) {42    let container = document.createElement('div');43    container.appendChild(document.createElement('div'));44    document.body.appendChild(container);45    test(function () {46        var element = define_new_custom_element();47        testFunction(container, `<${element.name}></${element.name}>`);48        assert_array_equals(element.takeLog().types(), ['constructed', 'connected']);49    }, name + ' must enqueue a connected reaction for a newly constructed custom element');50    test(function () {51        var element = define_new_custom_element(['title']);52        testFunction(container, `<${element.name} id="hello" title="hi"></${element.name}>`);53        var logEntries = element.takeLog();54        assert_array_equals(logEntries.types(), ['constructed', 'attributeChanged', 'connected']);55        assert_attribute_log_entry(logEntries[1], {name: 'title', oldValue: null, newValue: 'hi', namespace: null});56    }, name + ' must enqueue a attributeChanged reaction for a newly constructed custom element');57    container.parentNode.removeChild(container);58}59function testParsingMarkup(testFunction, name) {60    test(function () {61        var element = define_new_custom_element(['id']);62        assert_array_equals(element.takeLog().types(), []);63        var instance = testFunction(document, `<${element.name} id="hello" class="foo"></${element.name}>`);64        assert_equals(Object.getPrototypeOf(instance.querySelector(element.name)), element.class.prototype);65        var logEntries = element.takeLog();66        assert_array_equals(logEntries.types(), ['constructed', 'attributeChanged']);67        assert_attribute_log_entry(logEntries[1], {name: 'id', oldValue: null, newValue: 'hello', namespace: null});68    }, name + ' must construct a custom element');69}70function testCloner(testFunction, name) {71    let container = document.createElement('div');72    container.appendChild(document.createElement('div'));73    document.body.appendChild(container);74    test(function () {75        var element = define_new_custom_element(['id']);76        var instance = document.createElement(element.name);77        container.appendChild(instance);78        instance.setAttribute('id', 'foo');79        assert_array_equals(element.takeLog().types(), ['constructed', 'connected', 'attributeChanged']);80        var newInstance = testFunction(instance);81        var logEntries = element.takeLog();82        assert_array_equals(logEntries.types(), ['constructed', 'attributeChanged']);83        assert_attribute_log_entry(logEntries.last(), {name: 'id', oldValue: null, newValue: 'foo', namespace: null});84    }, name + ' must enqueue an attributeChanged reaction when cloning an element with an observed attribute');85    test(function () {86        var element = define_new_custom_element(['id']);87        var instance = document.createElement(element.name);88        container.appendChild(instance);89        instance.setAttribute('lang', 'en');90        assert_array_equals(element.takeLog().types(), ['constructed', 'connected']);91        var newInstance = testFunction(instance);92        assert_array_equals(element.takeLog().types(), ['constructed']);93    }, name + ' must not enqueue an attributeChanged reaction when cloning an element with an unobserved attribute');94    test(function () {95        var element = define_new_custom_element(['title', 'class']);96        var instance = document.createElement(element.name);97        container.appendChild(instance);98        instance.setAttribute('lang', 'en');99        instance.className = 'foo';100        instance.setAttribute('title', 'hello world');101        assert_array_equals(element.takeLog().types(), ['constructed', 'connected', 'attributeChanged', 'attributeChanged']);102        var newInstance = testFunction(instance);103        var logEntries = element.takeLog();104        assert_array_equals(logEntries.types(), ['constructed', 'attributeChanged', 'attributeChanged']);105        assert_attribute_log_entry(logEntries[1], {name: 'class', oldValue: null, newValue: 'foo', namespace: null});106        assert_attribute_log_entry(logEntries[2], {name: 'title', oldValue: null, newValue: 'hello world', namespace: null});107    }, name + ' must enqueue an attributeChanged reaction when cloning an element only for observed attributes');108}109function testReflectAttributeWithContentValues(jsAttributeName, contentAttributeName, validValue1, contentValue1, validValue2, contentValue2, name) {110    test(function () {111        var element = define_new_custom_element([contentAttributeName]);112        var instance = document.createElement(element.name);113        assert_array_equals(element.takeLog().types(), ['constructed']);114        instance[jsAttributeName] = validValue1;115        var logEntries = element.takeLog();116        assert_array_equals(logEntries.types(), ['attributeChanged']);117        assert_attribute_log_entry(logEntries.last(), {name: contentAttributeName, oldValue: null, newValue: contentValue1, namespace: null});118    }, name + ' must enqueue an attributeChanged reaction when adding ' + contentAttributeName + ' content attribute');119    test(function () {120        var element = define_new_custom_element([contentAttributeName]);121        var instance = document.createElement(element.name);122        instance[jsAttributeName] = validValue1;123        assert_array_equals(element.takeLog().types(), ['constructed', 'attributeChanged']);124        instance[jsAttributeName] = validValue2;125        var logEntries = element.takeLog();126        assert_array_equals(logEntries.types(), ['attributeChanged']);127        assert_attribute_log_entry(logEntries.last(), {name: contentAttributeName, oldValue: contentValue1, newValue: contentValue2, namespace: null});128    }, name + ' must enqueue an attributeChanged reaction when replacing an existing attribute');129}130function testReflectAttribute(jsAttributeName, contentAttributeName, validValue1, validValue2, name) {131    testReflectAttributeWithContentValues(jsAttributeName, contentAttributeName, validValue1, validValue1, validValue2, validValue2, name);132}133function testReflectBooleanAttribute(jsAttributeName, contentAttributeName, name) {134    testReflectAttributeWithContentValues(jsAttributeName, contentAttributeName, true, '', false, null, name);135}136function testAttributeAdder(testFunction, name) {137    test(function () {138        var element = define_new_custom_element(['id']);139        var instance = document.createElement(element.name);140        assert_array_equals(element.takeLog().types(), ['constructed']);141        testFunction(instance, 'id', 'foo');142        var logEntries = element.takeLog();143        assert_array_equals(logEntries.types(), ['attributeChanged']);144        assert_attribute_log_entry(logEntries.last(), {name: 'id', oldValue: null, newValue: 'foo', namespace: null});145    }, name + ' must enqueue an attributeChanged reaction when adding an attribute');146    test(function () {147        var element = define_new_custom_element(['class']);148        var instance = document.createElement(element.name);149        assert_array_equals(element.takeLog().types(), ['constructed']);150        testFunction(instance, 'data-lang', 'en');151        assert_array_equals(element.takeLog().types(), []);152    }, name + ' must not enqueue an attributeChanged reaction when adding an unobserved attribute');153    test(function () {154        var element = define_new_custom_element(['title']);155        var instance = document.createElement(element.name);156        instance.setAttribute('title', 'hello');157        assert_array_equals(element.takeLog().types(), ['constructed', 'attributeChanged']);158        testFunction(instance, 'title', 'world');159        var logEntries = element.takeLog();160        assert_array_equals(logEntries.types(), ['attributeChanged']);161        assert_attribute_log_entry(logEntries.last(), {name: 'title', oldValue: 'hello', newValue: 'world', namespace: null});162    }, name + ' must enqueue an attributeChanged reaction when replacing an existing attribute');163    test(function () {164        var element = define_new_custom_element([]);165        var instance = document.createElement(element.name);166        instance.setAttribute('data-lang', 'zh');167        assert_array_equals(element.takeLog().types(), ['constructed']);168        testFunction(instance, 'data-lang', 'en');169        assert_array_equals(element.takeLog().types(), []);170    }, name + ' must enqueue an attributeChanged reaction when replacing an existing unobserved attribute');171}172function testAttributeMutator(testFunction, name) {173    test(function () {174        var element = define_new_custom_element(['title']);175        var instance = document.createElement(element.name);176        instance.setAttribute('title', 'hello');177        assert_array_equals(element.takeLog().types(), ['constructed', 'attributeChanged']);178        testFunction(instance, 'title', 'world');179        var logEntries = element.takeLog();180        assert_array_equals(logEntries.types(), ['attributeChanged']);181        assert_attribute_log_entry(logEntries.last(), {name: 'title', oldValue: 'hello', newValue: 'world', namespace: null});182    }, name + ' must enqueue an attributeChanged reaction when replacing an existing attribute');183    test(function () {184        var element = define_new_custom_element(['class']);185        var instance = document.createElement(element.name);186        instance.setAttribute('data-lang', 'zh');187        assert_array_equals(element.takeLog().types(), ['constructed']);188        testFunction(instance, 'data-lang', 'en');189        assert_array_equals(element.takeLog().types(), []);190    }, name + ' must not enqueue an attributeChanged reaction when replacing an existing unobserved attribute');191}192function testAttributeRemover(testFunction, name, options) {193    if (options && !options.onlyExistingAttribute) {194        test(function () {195            var element = define_new_custom_element(['title']);196            var instance = document.createElement(element.name);197            assert_array_equals(element.takeLog().types(), ['constructed']);198            testFunction(instance, 'title');199            assert_array_equals(element.takeLog().types(), []);200        }, name + ' must not enqueue an attributeChanged reaction when removing an attribute that does not exist');201    }202    test(function () {203        var element = define_new_custom_element([]);204        var instance = document.createElement(element.name);205        instance.setAttribute('data-lang', 'hello');206        assert_array_equals(element.takeLog().types(), ['constructed']);207        testFunction(instance, 'data-lang');208        assert_array_equals(element.takeLog().types(), []);209    }, name + ' must not enqueue an attributeChanged reaction when removing an unobserved attribute');210    test(function () {211        var element = define_new_custom_element(['title']);212        var instance = document.createElement(element.name);213        instance.setAttribute('title', 'hello');214        assert_array_equals(element.takeLog().types(), ['constructed', 'attributeChanged']);215        testFunction(instance, 'title');216        var logEntries = element.takeLog();217        assert_array_equals(logEntries.types(), ['attributeChanged']);218        assert_attribute_log_entry(logEntries.last(), {name: 'title', oldValue: 'hello', newValue: null, namespace: null});219    }, name + ' must enqueue an attributeChanged reaction when removing an existing attribute');220    test(function () {221        var element = define_new_custom_element([]);222        var instance = document.createElement(element.name);223        instance.setAttribute('data-lang', 'ja');224        assert_array_equals(element.takeLog().types(), ['constructed']);225        testFunction(instance, 'data-lang');226        assert_array_equals(element.takeLog().types(), []);227    }, name + ' must not enqueue an attributeChanged reaction when removing an existing unobserved attribute');228}229function test_mutating_style_property_value(testFunction, name, options) {230    const propertyName = (options || {}).propertyName || 'color';231    const idlName = (options || {}).idlName || 'color';232    const value1 = (options || {}).value1 || 'blue';233    const rule1 = `${propertyName}: ${value1};`;234    const value2 = (options || {}).value2 || 'red';235    const rule2 = `${propertyName}: ${value2};`;236    test(function () {237        var element = define_new_custom_element(['style']);238        var instance = document.createElement(element.name);239        assert_array_equals(element.takeLog().types(), ['constructed']);240        testFunction(instance, propertyName, idlName, value1);241        assert_equals(instance.getAttribute('style'), rule1);242        var logEntries = element.takeLog();243        assert_array_equals(logEntries.types(), ['attributeChanged']);244        assert_attribute_log_entry(logEntries.last(), {name: 'style', oldValue: null, newValue: rule1, namespace: null});245    }, name + ' must enqueue an attributeChanged reaction when it adds the observed style attribute');246    test(function () {247        var element = define_new_custom_element(['title']);248        var instance = document.createElement(element.name);249        assert_array_equals(element.takeLog().types(), ['constructed']);250        testFunction(instance, propertyName, idlName, value1);251        assert_equals(instance.getAttribute('style'), rule1);252        assert_array_equals(element.takeLog().types(), []);253    }, name + ' must not enqueue an attributeChanged reaction when it adds the style attribute but the style attribute is not observed');254    test(function () {255        var element = define_new_custom_element(['style']);256        var instance = document.createElement(element.name);257        testFunction(instance, propertyName, idlName, value1);258        assert_array_equals(element.takeLog().types(), ['constructed', 'attributeChanged']);259        testFunction(instance, propertyName, idlName, value2);260        assert_equals(instance.getAttribute('style'), rule2);261        var logEntries = element.takeLog();262        assert_array_equals(logEntries.types(), ['attributeChanged']);263        assert_attribute_log_entry(logEntries.last(), {name: 'style', oldValue: rule1, newValue: rule2, namespace: null});264    }, name + ' must enqueue an attributeChanged reaction when it mutates the observed style attribute');265    test(function () {266        var element = define_new_custom_element([]);267        var instance = document.createElement(element.name);268        testFunction(instance, propertyName, idlName, value1);269        assert_array_equals(element.takeLog().types(), ['constructed']);270        testFunction(instance, propertyName, idlName, value2);271        assert_equals(instance.getAttribute('style'), rule2);272        assert_array_equals(element.takeLog().types(), []);273    }, name + ' must not enqueue an attributeChanged reaction when it mutates the style attribute but the style attribute is not observed');274}275function test_removing_style_property_value(testFunction, name) {276    test(function () {277        var element = define_new_custom_element(['style']);278        var instance = document.createElement(element.name);279        instance.setAttribute('style', 'color: red; display: none;');280        assert_array_equals(element.takeLog().types(), ['constructed', 'attributeChanged']);281        testFunction(instance, 'color', 'color');282        assert_equals(instance.getAttribute('style'), 'display: none;'); // Don't make this empty since browser behaviors are inconsistent now.283        var logEntries = element.takeLog();284        assert_array_equals(logEntries.types(), ['attributeChanged']);285        assert_attribute_log_entry(logEntries.last(), {name: 'style', oldValue: 'color: red; display: none;', newValue: 'display: none;', namespace: null});286    }, name + ' must enqueue an attributeChanged reaction when it removes a property from the observed style attribute');287    test(function () {288        var element = define_new_custom_element(['class']);289        var instance = document.createElement(element.name);290        instance.setAttribute('style', 'color: red; display: none;');291        assert_array_equals(element.takeLog().types(), ['constructed']);292        testFunction(instance, 'color', 'color');293        assert_equals(instance.getAttribute('style'), 'display: none;'); // Don't make this empty since browser behaviors are inconsistent now.294        assert_array_equals(element.takeLog().types(), []);295    }, name + ' must not enqueue an attributeChanged reaction when it removes a property from the style attribute but the style attribute is not observed');296}297function test_mutating_style_property_priority(testFunction, name) {298    test(function () {299        var element = define_new_custom_element(['style']);300        var instance = document.createElement(element.name);301        instance.setAttribute('style', 'color: red');302        assert_array_equals(element.takeLog().types(), ['constructed', 'attributeChanged']);303        testFunction(instance, 'color', 'color', true);304        assert_equals(instance.getAttribute('style'), 'color: red !important;');305        var logEntries = element.takeLog();306        assert_array_equals(logEntries.types(), ['attributeChanged']);307        assert_attribute_log_entry(logEntries.last(), {name: 'style', oldValue: 'color: red', newValue: 'color: red !important;', namespace: null});308    }, name + ' must enqueue an attributeChanged reaction when it makes a property important and the style attribute is observed');309    test(function () {310        var element = define_new_custom_element(['id']);311        var instance = document.createElement(element.name);312        instance.setAttribute('style', 'color: red');313        assert_array_equals(element.takeLog().types(), ['constructed']);314        testFunction(instance, 'color', 'color', true);315        assert_equals(instance.getAttribute('style'), 'color: red !important;');316        assert_array_equals(element.takeLog().types(), []);317    }, name + ' must enqueue an attributeChanged reaction when it makes a property important but the style attribute is not observed');...

Using AI Code Generation

1define_new_custom_element('test-element', class extends HTMLElement {2  constructor() {3    super();4  }5  connectedCallback() {6    console.log('connected');7  }8  disconnectedCallback() {9    console.log('disconnected');10  }11  attributeChangedCallback(attrName, oldVal, newVal) {12    console.log('attribute changed');13  }14  adoptedCallback() {15    console.log('adopted');16  }17});18var testElement = document.querySelector('test-element');19testElement.remove();20testElement.setAttribute('class', 'test');21testElement.setAttribute('class', 'test1');22testElement.removeAttribute('class');23testElement.setAttribute('class', 'test');24testElement.setAttribute('class', 'test1');25testElement.removeAttribute('class');26testElement.setAttribute('class', 'test');27testElement.setAttribute('class', 'test1');28testElement.removeAttribute('class');29testElement.setAttribute('class', 'test');30testElement.setAttribute('class', 'test1');31testElement.removeAttribute('class');

Using AI Code Generation

1define_new_custom_element('my-element', class extends HTMLElement {2    constructor() {3        super();4    }5});6define_new_custom_element('my-element2', class extends HTMLElement {7    constructor() {8        super();9    }10});11define_new_custom_element('my-element3', class extends HTMLElement {12    constructor() {13        super();14    }15});16define_new_custom_element('my-element4', class extends HTMLElement {17    constructor() {18        super();19    }20});21define_new_custom_element('my-element5', class extends HTMLElement {22    constructor() {23        super();24    }25});26define_new_custom_element('my-element6', class extends HTMLElement {27    constructor() {28        super();29    }30});31define_new_custom_element('my-element7', class extends HTMLElement {32    constructor() {33        super();34    }35});36define_new_custom_element('my-element8', class extends HTMLElement {37    constructor() {38        super();39    }40});41define_new_custom_element('my-element9', class extends HTMLElement {42    constructor() {43        super();44    }45});46define_new_custom_element('my-element10', class extends HTMLElement {47    constructor() {48        super();49    }50});51define_new_custom_element('my-element11', class extends HTMLElement {52    constructor() {53        super();54    }55});56define_new_custom_element('my-element12', class extends HTMLElement {57    constructor() {58        super();59    }60});61define_new_custom_element('my-element13', class extends HTMLElement {62    constructor() {63        super();64    }65});66define_new_custom_element('my-element14', class extends HTMLElement {67    constructor() {68        super();69    }70});

Using AI Code Generation

1define_new_custom_element('my-new-element', {2  prototype: {3    createdCallback: function() {4      this.innerHTML = 'Hello World!';5    }6  }7});8var my_new_element = define_new_custom_element('my-new-element', {9  prototype: {10    createdCallback: function() {11      this.innerHTML = 'Hello World!';12    }13  }14});15my_new_element.prototype.sayHello = function() {16  console.log('Hello!');17};

Using AI Code Generation

1define_new_custom_element('custom-element', {prototype: {}});2define_new_custom_element('custom-element-2', {prototype: {}});3define_new_custom_element('custom-element-3', {prototype: {}});4define_new_custom_element('custom-element-4', {prototype: {}});5define_new_custom_element('custom-element-5', {prototype: {}});6define_new_custom_element('custom-element-6', {prototype: {}});7define_new_custom_element('custom-element-7', {prototype: {}});8define_new_custom_element('custom-element-8', {prototype: {}});9define_new_custom_element('custom-element-9', {prototype: {}});10define_new_custom_element('custom-element-10', {prototype: {}});11define_new_custom_element('custom-element-11', {prototype: {}});12define_new_custom_element('custom-element-12', {prototype: {}});13define_new_custom_element('custom-element-13', {prototype: {}});14define_new_custom_element('custom-element-14', {prototype: {}});15define_new_custom_element('custom-element-15', {prototype: {}});16define_new_custom_element('custom-element-16', {prototype: {}});17define_new_custom_element('custom-element-17', {prototype: {}});

Using AI Code Generation

1define_new_custom_element("my-element", {2    constructor: function() {3        console.log("constructor called");4    },5    prototype: {6        connectedCallback: function() {7            console.log("connectedCallback called");8        },9        disconnectedCallback: function() {10            console.log("disconnectedCallback called");11        },12        attributeChangedCallback: function(attrName, oldVal, newVal) {13            console.log("attributeChangedCallback called for " + attrName);14        }15    }16});

Using AI Code Generation

1import { define_new_custom_element } from "./wpt_custom_element.js";2const custom_element_name = "my-custom-element";3define_new_custom_element(custom_element_name);4const custom_element = document.createElement(custom_element_name);5custom_element.setAttribute("attr1", "value1");6document.body.appendChild(custom_element);7export function define_new_custom_element(custom_element_name) {8class MyCustomElement extends HTMLElement {9constructor() {10super();11}12}13customElements.define(custom_element_name, MyCustomElement);14}

Using AI Code Generation

1var wptools = require('wptools');2wptools.define_new_custom_element({3  data: {4  },5  methods: {6    load: function() {7      var self = this;8      wptools.get_articles({9        success: function(articles) {10          self.data.articles = articles;11          self.render();12        },13        error: function(error) {14          console.log(error);15        }16      });17    }18  },19  ready: function() {20    this.load();21  }22});23var list = document.querySelector('wikipedia-article-list');24document.body.appendChild(list);

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