Best JavaScript code snippet using root
events.spec.js
Source: events.spec.js
1import { patch } from 'web/runtime/patch'2import VNode from 'core/vdom/vnode'3describe('vdom events module', () => {4 it('should attach event handler to element', () => {5 const click = jasmine.createSpy()6 const vnode = new VNode('a', { on: { click }})7 const elm = patch(null, vnode)8 document.body.appendChild(elm)9 triggerEvent(elm, 'click')10 expect(click.calls.count()).toBe(1)11 })12 it('should not duplicate the same listener', () => {13 const click = jasmine.createSpy()14 const vnode1 = new VNode('a', { on: { click }})15 const vnode2 = new VNode('a', { on: { click }})16 const elm = patch(null, vnode1)17 patch(vnode1, vnode2)18 document.body.appendChild(elm)19 triggerEvent(elm, 'click')20 expect(click.calls.count()).toBe(1)21 })22 it('should update different listener', () => {23 const click = jasmine.createSpy()24 const click2 = jasmine.createSpy()25 const vnode1 = new VNode('a', { on: { click }})26 const vnode2 = new VNode('a', { on: { click: click2 }})27 const elm = patch(null, vnode1)28 document.body.appendChild(elm)29 triggerEvent(elm, 'click')30 expect(click.calls.count()).toBe(1)31 expect(click2.calls.count()).toBe(0)32 patch(vnode1, vnode2)33 triggerEvent(elm, 'click')34 expect(click.calls.count()).toBe(1)35 expect(click2.calls.count()).toBe(1)36 })37 it('should attach Array of multiple handlers', () => {38 const click = jasmine.createSpy()39 const vnode = new VNode('a', { on: { click: [click, click] }})40 const elm = patch(null, vnode)41 document.body.appendChild(elm)42 triggerEvent(elm, 'click')43 expect(click.calls.count()).toBe(2)44 })45 it('should update Array of multiple handlers', () => {46 const click = jasmine.createSpy()47 const click2 = jasmine.createSpy()48 const vnode1 = new VNode('a', { on: { click: [click, click2] }})49 const vnode2 = new VNode('a', { on: { click: [click] }})50 const elm = patch(null, vnode1)51 document.body.appendChild(elm)52 triggerEvent(elm, 'click')53 expect(click.calls.count()).toBe(1)54 expect(click2.calls.count()).toBe(1)55 patch(vnode1, vnode2)56 triggerEvent(elm, 'click')57 expect(click.calls.count()).toBe(2)58 expect(click2.calls.count()).toBe(1)59 })60 it('should remove handlers that are no longer present', () => {61 const click = jasmine.createSpy()62 const vnode1 = new VNode('a', { on: { click }})63 const vnode2 = new VNode('a', {})64 const elm = patch(null, vnode1)65 document.body.appendChild(elm)66 triggerEvent(elm, 'click')67 expect(click.calls.count()).toBe(1)68 patch(vnode1, vnode2)69 triggerEvent(elm, 'click')70 expect(click.calls.count()).toBe(1)71 })72 it('should remove Array handlers that are no longer present', () => {73 const click = jasmine.createSpy()74 const vnode1 = new VNode('a', { on: { click: [click, click] }})75 const vnode2 = new VNode('a', {})76 const elm = patch(null, vnode1)77 document.body.appendChild(elm)78 triggerEvent(elm, 'click')79 expect(click.calls.count()).toBe(2)80 patch(vnode1, vnode2)81 triggerEvent(elm, 'click')82 expect(click.calls.count()).toBe(2)83 })84 // #465085 it('should handle single -> array or array -> single handler changes', () => {86 const click = jasmine.createSpy()87 const click2 = jasmine.createSpy()88 const click3 = jasmine.createSpy()89 const vnode0 = new VNode('a', { on: { click: click }})90 const vnode1 = new VNode('a', { on: { click: [click, click2] }})91 const vnode2 = new VNode('a', { on: { click: click }})92 const vnode3 = new VNode('a', { on: { click: [click2, click3] }})93 const elm = patch(null, vnode0)94 document.body.appendChild(elm)95 triggerEvent(elm, 'click')96 expect(click.calls.count()).toBe(1)97 expect(click2.calls.count()).toBe(0)98 patch(vnode0, vnode1)99 triggerEvent(elm, 'click')100 expect(click.calls.count()).toBe(2)101 expect(click2.calls.count()).toBe(1)102 patch(vnode1, vnode2)103 triggerEvent(elm, 'click')104 expect(click.calls.count()).toBe(3)105 expect(click2.calls.count()).toBe(1)106 patch(vnode2, vnode3)107 triggerEvent(elm, 'click')108 expect(click.calls.count()).toBe(3)109 expect(click2.calls.count()).toBe(2)110 expect(click3.calls.count()).toBe(1)111 })...
event.js
Source: event.js
...13 K(document).unbind('click', click1);14 result = '';15 K(document).click();16 equals(result, '');17 function click2(e) {18 K(this).html('click2');19 }20 K('#test-data-01').click(click2);21 K('#test-data-01').click();22 equals(K('#test-data-01').html(), 'click2');23});24test('unbind(el, type, fn)', function() {25 var result = '';26 function click1(e) {27 result += 'click1';28 }29 function click2(e) {30 result += 'click2';31 }32 function mousedown1(e) {33 result += 'mousedown1';34 }35 K(document).click(click1);36 K(document).click(click2);37 K(document).mousedown(mousedown1);38 result = '';39 K(document).click();40 equals(result, 'click1click2');41 result = '';42 K(document).mousedown();43 equals(result, 'mousedown1');44 K(document).unbind('click', click1);45 result = '';46 K(document).click();47 equals(result, 'click2');48 K(document).unbind('click', click2);49 result = '';50 K(document).click();51 equals(result, '');52 K(document).unbind('mousedown', mousedown1);53 result = '';54 K(document).mousedown();55 equals(result, '');56});57test('unbind(el, type)', function() {58 var result = '';59 function click1(e) {60 result += 'click1';61 }62 function click2(e) {63 result += 'click2';64 }65 function mousedown1(e) {66 result += 'mousedown1';67 }68 K(document).click(click1);69 K(document).click(click2);70 K(document).mousedown(mousedown1);71 //unbind click72 K(document).unbind('click');73 result = '';74 K(document).click();75 equals(result, '');76 //unbind mousedown77 K(document).unbind('mousedown');78 result = '';79 K(document).mousedown();80 equals(result, '');81});82test('unbind(el)', function() {83 var result = '';84 function click1(e) {85 result += 'click1';86 console.log('check');87 }88 function click2(e) {89 result += 'click2';90 console.log('check');91 }92 function mousedown1(e) {93 result += 'mousedown1';94 console.log('check');95 }96 K(document).click(click1);97 K(document).click(click2);98 K(document).mousedown(mousedown1);99 //unbind100 K(document).unbind();101 result = '';102 K(document).click();...
Using AI Code Generation
1root.click2();2root.click3();3root.click4();4root.click5();5root.click6();6root.click7();7root.click8();8root.click9();9root.click10();10root.click11();11root.click12();12root.click13();13root.click14();14root.click15();15root.click16();16root.click17();17root.click18();18root.click19();19root.click20();20root.click21();21root.click22();22root.click23();23root.click24();24root.click25();25root.click26();26root.click27();27root.click28();28root.click29();29root.click30();30root.click31();31root.click32();32root.click33();33root.click34();34root.click35();35root.click36();36root.click37();
Using AI Code Generation
1root.click2();2root.click2();3root.click2();4root.click2();5root.click2();6root.click2();7root.click2();8root.click2();9root.click2();10root.click2();
Using AI Code Generation
1root.click2();2root.click3();3root.click4();4root.click5();5root.click6();6root.click7();7root.click8();8root.click9();9root.click10();10root.click11();11root.click12();12root.click13();13root.click14();14root.click15();15root.click16();16root.click17();17root.click18();18root.click19();19root.click20();20root.click21();
Using AI Code Generation
1click2();2const click1 = () => {3 console.log('click1');4};5const click2 = () => {6 console.log('click2');7};8export { click1, click2 };9click1();10click2();11const click1 = () => {12 console.log('click1');13};14const click2 = () => {15 console.log('click2');16};17export { click1, click2 };18export default click1;19click1();20click2();21const click1 = () => {22 console.log('click1');23};24const click2 = () => {25 console.log('click2');26};27export { click1, click2 };28export default click1;29root.click1();30root.click2();
Check out the latest blogs from LambdaTest on this topic:
Code coverage is a vital measure for describing how the source implementation is tested by the test code (or test suite). It is one of the critical factors for ensuring the effectiveness of the code. PHPUnit, a popular test framework in PHP, also provides different ways for generating PHPUnit coverage report in HTML and XML.
This article is a part of our Content Hub. For more in-depth resources, check out our content hub on Selenium JavaScript Tutorial.
TestNG is an open-source test automation framework, where ‘NG’ stands for Next Generation. TestNG has given testers the ability to group or prioritize the test cases, generate HTML reports, log messages, run tests in parallel, and much more. These diverse sets of features are a huge boon when it comes to Selenium automation testing.
Modernizr is an open-source and compact JavaScript library that allows developers to craft various levels of experiences for users depending with respect to cross browser compatibility. Modernizr helps developers to perform cross browser testing to check whether new generation HTML5 and CSS3 features are natively supported by their visitor’s browsers or not and to provide dedicated fallbacks for older browsers that are notorious for their poor feature support. Modernizr coupled with the principle of progressive enhancement helps to design cutting-edge websites layer after layer taking advantage of powerful modern web technologies without discarding users still using older browsers like IE.
The primary goal of every web developer is to build websites with modern and intuitive designs that deliver a smooth and seamless user experience irrespective of which browser they might be using to surf the web. The Internet has witnessed a massive unprecedented boom in recent decades. As of Dec 2018, there are more than 4.1 billion internet users in the world and close to 1.94 billion websites on the web. This consequently implies an expansion in a number of ways websites are being accessed by audiences across the globe. This gives rise to the conundrum of cross browser compatibility which poses a huge challenge to developers. As the number of browsers and their versions are growing at such a rapid pace every year, the task of trying to make a website appear and perform consistently across all browsers is every developer’s nightmare. However, as tedious and time-consuming as cross browser testing may be, it is an imperative phase of every testing cycle. While it is considered nearly impossible to have a website appear and work identical on every browser, there still are a number of ways to deliver consistent user experience and reach a wider target audience. In this article, we’ll explore what cross browser compatibility issues are and why do they occur, how cross browser CSS with feature detection is more favorable to browser detection.
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!!