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How to use componentDidMount method in root
Best JavaScript code snippet using root
lifecycle.test.js
Source:lifecycle.test.js 
...204 }205 }206 class LifecycleTestComponent extends Component {207 componentWillMount() {}208 componentDidMount() {}209 componentWillUnmount() {}210 render() {211 return <div />;212 }213 }214 class Inner extends LifecycleTestComponent {215 render() {216 return (217 <div>218 <InnerMost />219 </div>220 );221 }222 }223 class InnerMost extends LifecycleTestComponent {224 render() {225 return <div />;226 }227 }228 let spies = [229 'componentWillMount',230 'componentDidMount',231 'componentWillUnmount'232 ];233 let verifyLifecycleMethods = TestComponent => {234 let proto = TestComponent.prototype;235 spies.forEach(s => sinon.spy(proto, s));236 let reset = () => spies.forEach(s => proto[s].resetHistory());237 it('should be invoked for components on initial render', () => {238 reset();239 render(<Outer />, scratch);240 expect(proto.componentDidMount).to.have.been.called;241 expect(proto.componentWillMount).to.have.been.calledBefore(242 proto.componentDidMount243 );244 expect(proto.componentDidMount).to.have.been.called;245 });246 it('should be invoked for components on unmount', () => {247 reset();248 setState({ show: false });249 rerender();250 expect(proto.componentWillUnmount).to.have.been.called;251 });252 it('should be invoked for components on re-render', () => {253 reset();254 setState({ show: true });255 rerender();256 expect(proto.componentDidMount).to.have.been.called;257 expect(proto.componentWillMount).to.have.been.calledBefore(258 proto.componentDidMount259 );260 expect(proto.componentDidMount).to.have.been.called;261 });262 };263 describe('inner components', () => {264 verifyLifecycleMethods(Inner);265 });266 describe('innermost components', () => {267 verifyLifecycleMethods(InnerMost);268 });269 describe('when shouldComponentUpdate() returns false', () => {270 let setState;271 class Outer extends Component {272 constructor() {273 super();274 this.state = { show: true };275 setState = s => this.setState(s);276 }277 render(props, { show }) {278 return (279 <div>280 {show && (281 <div>282 <Inner {...props} />283 </div>284 )}285 </div>286 );287 }288 }289 class Inner extends Component {290 shouldComponentUpdate() {291 return false;292 }293 componentWillMount() {}294 componentDidMount() {}295 componentWillUnmount() {}296 render() {297 return <div />;298 }299 }300 let proto = Inner.prototype;301 let spies = [302 'componentWillMount',303 'componentDidMount',304 'componentWillUnmount'305 ];306 spies.forEach(s => sinon.spy(proto, s));307 let reset = () => spies.forEach(s => proto[s].resetHistory());308 beforeEach(() => reset());309 it('should be invoke normally on initial mount', () => {310 render(<Outer />, scratch);311 expect(proto.componentWillMount).to.have.been.called;312 expect(proto.componentWillMount).to.have.been.calledBefore(313 proto.componentDidMount314 );315 expect(proto.componentDidMount).to.have.been.called;316 });317 it('should be invoked normally on unmount', () => {318 setState({ show: false });319 rerender();320 expect(proto.componentWillUnmount).to.have.been.called;321 });322 it('should still invoke mount for shouldComponentUpdate():false', () => {323 setState({ show: true });324 rerender();325 expect(proto.componentWillMount).to.have.been.called;326 expect(proto.componentWillMount).to.have.been.calledBefore(327 proto.componentDidMount328 );329 expect(proto.componentDidMount).to.have.been.called;330 });331 it('should still invoke unmount for shouldComponentUpdate():false', () => {332 setState({ show: false });333 rerender();334 expect(proto.componentWillUnmount).to.have.been.called;335 });336 });337 });338 describe('#setState', () => {339 // From preactjs/preact#1170340 it('should NOT mutate state, only create new versions', () => {341 const stateConstant = {};342 let didMount = false;343 let componentState;344 class Stateful extends Component {345 constructor() {346 super(...arguments);347 this.state = stateConstant;348 }349 componentDidMount() {350 didMount = true;351 // eslint-disable-next-line react/no-did-mount-set-state352 this.setState({ key: 'value' }, () => {353 componentState = this.state;354 });355 }356 render() {357 return <div />;358 }359 }360 render(<Stateful />, scratch);361 rerender();362 expect(didMount).to.equal(true);363 expect(componentState).to.deep.equal({ key: 'value' });364 expect(stateConstant).to.deep.equal({});365 });366 // This feature is not mentioned in the docs, but is part of the release367 // notes for react v16.0.0: https://reactjs.org/blog/2017/09/26/react-v16.0.html#breaking-changes368 it('should abort if updater function returns null', () => {369 let updateState;370 class Foo extends Component {371 constructor() {372 super();373 this.state = { value: 0 };374 updateState = () =>375 this.setState(prev => {376 prev.value++;377 return null;378 });379 }380 render() {381 return 'value: ' + this.state.value;382 }383 }384 let renderSpy = sinon.spy(Foo.prototype, 'render');385 render(<Foo />, scratch);386 renderSpy.resetHistory();387 updateState();388 rerender();389 expect(renderSpy).to.not.be.called;390 });391 it('should call callback with correct this binding', () => {392 let inst;393 let updateState;394 class Foo extends Component {395 constructor() {396 super();397 updateState = () => this.setState({}, this.onUpdate);398 }399 onUpdate() {400 inst = this;401 }402 }403 render(<Foo />, scratch);404 updateState();405 rerender();406 expect(inst).to.be.instanceOf(Foo);407 });408 });409 describe('Lifecycle DOM Timing', () => {410 it('should be invoked when dom does (DidMount, WillUnmount) or does not (WillMount, DidUnmount) exist', () => {411 let setState;412 class Outer extends Component {413 constructor() {414 super();415 this.state = { show: true };416 setState = s => {417 this.setState(s);418 this.forceUpdate();419 };420 }421 componentWillMount() {422 expect(423 document.getElementById('OuterDiv'),424 'Outer componentWillMount'425 ).to.not.exist;426 }427 componentDidMount() {428 expect(document.getElementById('OuterDiv'), 'Outer componentDidMount')429 .to.exist;430 }431 componentWillUnmount() {432 expect(433 document.getElementById('OuterDiv'),434 'Outer componentWillUnmount'435 ).to.exist;436 setTimeout(() => {437 expect(438 document.getElementById('OuterDiv'),439 'Outer after componentWillUnmount'440 ).to.not.exist;441 }, 0);442 }443 render(props, { show }) {444 return (445 <div id="OuterDiv">446 {show && (447 <div>448 <Inner {...props} />449 </div>450 )}451 </div>452 );453 }454 }455 class Inner extends Component {456 componentWillMount() {457 expect(458 document.getElementById('InnerDiv'),459 'Inner componentWillMount'460 ).to.not.exist;461 }462 componentDidMount() {463 expect(document.getElementById('InnerDiv'), 'Inner componentDidMount')464 .to.exist;465 }466 componentWillUnmount() {467 // @TODO Component mounted into elements (non-components)468 // are currently unmounted after those elements, so their469 // DOM is unmounted prior to the method being called.470 //expect(document.getElementById('InnerDiv'), 'Inner componentWillUnmount').to.exist;471 setTimeout(() => {472 expect(473 document.getElementById('InnerDiv'),474 'Inner after componentWillUnmount'475 ).to.not.exist;476 }, 0);...
autoSubscriber.spec.js
Source:autoSubscriber.spec.js
...17 return ()=>{18 unsubscribeCalled++;19 };20 }21 componentDidMount() {22 didMountCalled = true;23 }24 componentDidUpdate() {25 didUpdateCalled = true;26 }27 componentWillUnmount() {28 willUnmountCalled = true;29 }30 });31 const subscriber = new Subscriber();32 subscriber.componentDidMount();33 subscriber.componentDidUpdate();34 subscriber.componentDidUpdate();35 subscriber.componentDidUpdate();36 subscriber.componentDidUpdate();37 subscriber.componentWillUnmount();38 assert.equal(didMountCalled, true, "componentDidMount called");39 assert.equal(didUpdateCalled, true, "componentDidUpdate called");40 assert.equal(willUnmountCalled, true, "componentWillUnmount called");41 assert.equal(getSubsCalled, 5, "getSubs called on componentDidMount and each componentDidUpdate");42 assert.equal(subscribeCalled, 1, "subscribe called only on getSubs changes");43 assert.equal(unsubscribeCalled, 1, "unsubscribe called on componentWillUnmount");44 assert.end();45});46test('createAutoSubscriber component test', (assert) => {47 var getSubsCalled = 0;48 var subscribeCalled = 0;49 var unsubscribeCalled = 0;50 var didMountCalled = false;51 var didUpdateCalled = false;52 var willUnmountCalled = false;53 function getSubs(props, state) {54 getSubsCalled++;55 return {subKey: "subKey1", asValue: true};56 }57 function subscribeSubs(subs, props, state) {58 subscribeCalled++;59 return ()=>{60 unsubscribeCalled++;61 };62 }63 const Subscriber = createAutoSubscriber({getSubs, subscribeSubs})(class {64 getSubs() {65 //shouldn't be called66 }67 subscribeSubs() {68 //shouldn't be called69 }70 componentDidMount() {71 didMountCalled = true;72 }73 componentDidUpdate() {74 didUpdateCalled = true;75 }76 componentWillUnmount() {77 willUnmountCalled = true;78 }79 });80 const subscriber = new Subscriber();81 subscriber.componentDidMount();82 subscriber.componentDidUpdate();83 subscriber.componentDidUpdate();84 subscriber.componentDidUpdate();85 subscriber.componentDidUpdate();86 subscriber.componentWillUnmount();87 assert.equal(didMountCalled, true, "componentDidMount called");88 assert.equal(didUpdateCalled, true, "componentDidUpdate called");89 assert.equal(willUnmountCalled, true, "componentWillUnmount called");90 assert.equal(getSubsCalled, 5, "getSubs called on componentDidMount and each componentDidUpdate");91 assert.equal(subscribeCalled, 1, "subscribe called only on getSubs changes");92 assert.equal(unsubscribeCalled, 1, "unsubscribe called on componentWillUnmount");93 assert.end();94});95test('autoSubscriber component updates subscriptions on getSubs changes', (assert) => {96 var getSubsCalled = 0;97 var subscribeCalled = 0;98 var unsubscribeCalled = 0;99 var didMountCalled = false;100 var didUpdateCalled = false;101 var willUnmountCalled = false;102 const Subscriber = autoSubscriber(class {103 static getSubs(props, state) {104 getSubsCalled++;105 return {subKey: "subKey"+(getSubsCalled), asValue: true};106 }107 static subscribeSubs(subs, props, state) {108 subscribeCalled++;109 return ()=>{110 unsubscribeCalled++;111 };112 }113 componentDidMount() {114 didMountCalled = true;115 }116 componentDidUpdate() {117 didUpdateCalled = true;118 }119 componentWillUnmount() {120 willUnmountCalled = true;121 }122 });123 const subscriber = new Subscriber();124 subscriber.componentDidMount();125 subscriber.componentDidUpdate();126 subscriber.componentDidUpdate();127 subscriber.componentWillUnmount();128 assert.equal(didMountCalled, true, "componentDidMount called");129 assert.equal(didUpdateCalled, true, "componentDidUpdate called");130 assert.equal(willUnmountCalled, true, "componentWillUnmount called");131 assert.equal(getSubsCalled, 3, "getSubs called on componentDidMount and each componentDidUpdate");132 assert.equal(subscribeCalled, 3, "subscribe called only on getSubs changes");133 assert.equal(unsubscribeCalled, 3, "unsubscribe called on componentWillUnmount");134 assert.end();135});136test('autoSubscriber handles subscribeSubs that returns a promise and keeps track of fetching state', (assert) => {137 var getSubsCalled = 0;138 var subscribeCalled = 0;139 var unsubscribeCalled = 0;140 let setStateCalledWithFetchingTrue = false;141 const Subscriber = autoSubscriber(class {142 static getSubs(props, state) {143 getSubsCalled++;144 return {subKey: "subKey"+(getSubsCalled), asValue: true};145 }146 static subscribeSubs(subs, props, state) {147 subscribeCalled++;148 return {149 unsubscribe: ()=>{150 unsubscribeCalled++;151 },152 promise: new Promise((resolve, reject) => { resolve(); })153 };154 }155 componentDidMount() {156 }157 componentDidUpdate() {158 }159 componentWillUnmount() {160 }161 setState(state, done) {162 if (state._autoSubscriberFetching) {163 setStateCalledWithFetchingTrue = true;164 } else if (state._autoSubscriberFetching === false) {165 assert.end();166 }167 done && done();168 }169 });170 const subscriber = new Subscriber();171 subscriber.componentDidMount();172 assert.equal(getSubsCalled, 1, "getSubs called on componentDidMount");173 assert.equal(setStateCalledWithFetchingTrue, true, "setState called with autoSubscriberFetching=true");174});175test('autoSubscriber keeps track of fetching error', (assert) => {176 var getSubsCalled = 0;177 var subscribeCalled = 0;178 var unsubscribeCalled = 0;179 const Subscriber = autoSubscriber(class {180 static getSubs(props, state) {181 getSubsCalled++;182 return {subKey: "subKey"+(getSubsCalled), asValue: true};183 }184 static subscribeSubs(subs, props, state) {185 subscribeCalled++;186 return {187 unsubscribe: ()=>{188 unsubscribeCalled++;189 },190 promise: new Promise((resolve, reject) => { reject('fetch error'); })191 };192 }193 componentDidMount() {194 }195 componentDidUpdate() {196 }197 componentWillUnmount() {198 }199 setState(state, done) {200 if (state._autoSubscriberError === 'fetch error') {201 assert.end();202 }203 done && done();204 }205 });206 const subscriber = new Subscriber();207 subscriber.componentDidMount();208 assert.equal(getSubsCalled, 1, "getSubs called on componentDidMount");209});210test('autoSubscriber doesn\'t trash super\'s state', (assert) => {211 var getSubsCalled = 0;212 var subscribeCalled = 0;213 var unsubscribeCalled = 0;214 const Subscriber = autoSubscriber(class {215 static getSubs(props, state) {216 getSubsCalled++;217 return {subKey: "subKey"+(getSubsCalled), asValue: true};218 }219 static subscribeSubs(subs, props, state) {220 subscribeCalled++;221 return {222 unsubscribe: ()=>{223 unsubscribeCalled++;224 },225 promise: new Promise((resolve, reject) => { resolve(); })226 };227 }228 constructor(props) {229 this.state = {230 userState: 1231 }232 }233 componentDidMount() {234 }235 componentDidUpdate() {236 }237 componentWillUnmount() {238 }239 setState(state, done) {240 }241 });242 const subscriber = new Subscriber();243 subscriber.componentDidMount();244 assert.equal(getSubsCalled, 1, "getSubs called on componentDidMount");245 assert.equal(subscriber.state.userState, 1, "user state is kept");246 assert.end();247});248test('autoSubscriber component works with missing methods', (assert) => {249 var didMountCalled = false;250 var didUpdateCalled = false;251 var willUnmountCalled = false;252 const Subscriber = autoSubscriber(class {253 componentDidMount() {254 didMountCalled = true;255 }256 componentDidUpdate() {257 didUpdateCalled = true;258 }259 componentWillUnmount() {260 willUnmountCalled = true;261 }262 });263 const subscriber = new Subscriber();264 subscriber.componentDidMount();265 subscriber.componentDidUpdate();266 subscriber.componentWillUnmount();267 assert.end();...
no-did-mount-set-state.js
Source:no-did-mount-set-state.js
...39 },40 {41 code: `42 class Hello extends React.Component {43 componentDidMount() {44 this.setState({45 data: data46 });47 }48 }49 `,50 errors: [51 {52 messageId: 'noSetState',53 data: { name: 'componentDidMount' },54 },55 ],56 },57 {58 code: `59 class Hello extends React.Component {60 componentDidMount = () => {61 this.setState({62 data: data63 });64 }65 }66 `,67 features: ['class fields', 'no-ts-old'], // TODO: FIXME: remove no-ts-old and fix68 errors: [69 {70 messageId: 'noSetState',71 data: { name: 'componentDidMount' },72 },73 ],74 },75 {76 code: `77 var Hello = createReactClass({78 componentDidMount: function() {79 this.setState({80 data: data81 });82 }83 });84 `,85 options: ['disallow-in-func'],86 errors: [87 {88 messageId: 'noSetState',89 data: { name: 'componentDidMount' },90 },91 ],92 },93 {94 code: `95 class Hello extends React.Component {96 componentDidMount() {97 this.setState({98 data: data99 });100 }101 }102 `,103 options: ['disallow-in-func'],104 errors: [105 {106 messageId: 'noSetState',107 data: { name: 'componentDidMount' },108 },109 ],110 },111 {112 code: `113 var Hello = createReactClass({114 componentDidMount: function() {115 someClass.onSomeEvent(function(data) {116 this.setState({117 data: data118 });119 })120 }121 });122 `,123 options: ['disallow-in-func'],124 errors: [125 {126 messageId: 'noSetState',127 data: { name: 'componentDidMount' },128 },129 ],130 },131 {132 code: `133 class Hello extends React.Component {134 componentDidMount() {135 someClass.onSomeEvent(function(data) {136 this.setState({137 data: data138 });139 })140 }141 }142 `,143 options: ['disallow-in-func'],144 errors: [145 {146 messageId: 'noSetState',147 data: { name: 'componentDidMount' },148 },149 ],150 },151 {152 code: `153 var Hello = createReactClass({154 componentDidMount: function() {155 if (true) {156 this.setState({157 data: data158 });159 }160 }161 });162 `,163 errors: [164 {165 messageId: 'noSetState',166 data: { name: 'componentDidMount' },167 },168 ],169 },170 {171 code: `172 class Hello extends React.Component {173 componentDidMount() {174 if (true) {175 this.setState({176 data: data177 });178 }179 }180 }181 `,182 errors: [183 {184 messageId: 'noSetState',185 data: { name: 'componentDidMount' },186 },187 ],188 },189 {190 code: `191 var Hello = createReactClass({192 componentDidMount: function() {193 someClass.onSomeEvent((data) => this.setState({data: data}));194 }195 });196 `,197 options: ['disallow-in-func'],198 errors: [199 {200 messageId: 'noSetState',201 data: { name: 'componentDidMount' },202 },203 ],204 },205 {206 code: `207 class Hello extends React.Component {208 componentDidMount() {209 someClass.onSomeEvent((data) => this.setState({data: data}));210 }211 }212 `,213 options: ['disallow-in-func'],214 errors: [215 {216 messageId: 'noSetState',217 data: { name: 'componentDidMount' },218 },219 ],220 },221];222const ruleTester = new RuleTester({ parserOptions });...
AxiosComponentLoaderBasic.js
Source:AxiosComponentLoaderBasic.js
...12 static propTypes = {13 component: PropTypes.func.isRequired,14 requestURL: PropTypes.string.isRequired15 };16 componentDidMount() {17 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() <<<<<<<<<<<<<<');18 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() > typeof props.requestURL: ', typeof this.props.requestURL);19 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() > props.requestURL: ', this.props.requestURL);20 axios.get(decodeURI(this.props.requestURL))21 .then(response => {22 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() > json > SUCCESS typeof: ', typeof response.data);23 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() > json > SUCCESS data: ', response.data);24 this.setState({ data: response.data });25 })26 .catch(error => {27 if (error.response) {28 // The request was made and the server responded with a status code that falls out of the range of 2xx29 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() > json > ERROR.response.data: ', error.response.data);30 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() > json > ERROR.response.status: ', error.response.status);31 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() > json > ERROR.response.headers: ', error.response.headers);32 } else {33 // Something happened in setting up the request that triggered an Error34 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() > json > ERROR.message: ', error.message);35 }36 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > componentDidMount() > json > ERROR.config: ', error.config);37 });38 }39 render () {40 let Component = this.props.component;41 console.log('>>>>>>>>>>>>>>>> AxiosComponentLoaderBasic > render() > Component: ', this.props.component);42 return <Component content={ this.state.data } />;43 }44}...
index.test.js
Source:index.test.js
1import React from 'react';2import ReactDOM from 'react-dom';3import { configure, shallow } from 'enzyme';4import { expect } from 'chai';5import { spy, stub, useFakeTimers } from 'sinon'6import Adapter from 'enzyme-adapter-react-16';7configure({ adapter: new Adapter() });8import App from '../src/App';9import Timer from '../src/Timer';10describe('<App />', () => {11 var appWrapper12 it('calls componentDidMount and adds a Timer', () => {13 spy(App.prototype, 'componentDidMount');14 appWrapper = shallow(<App />);15 //component mounted correctly16 expect(App.prototype.componentDidMount.calledOnce, "componentDidMount was not called").to.equal(true);17 //expect there to be one child element of div.TimerGrid within App18 expect(appWrapper.children('.TimerGrid').length).to.equal(1)19 //expect this.state.timers to be an array equal to 120 expect(appWrapper.state().timerIDs.length).to.equal(1)21 appWrapper.unmount()22 });23});24describe('<Timer />', () => {25 var timerWrapper26 it('calls componentDidMount', () => {27 spy(Timer.prototype, 'componentDidMount');28 timerWrapper = shallow(<Timer />);29 //component mounted correctly30 expect(Timer.prototype.componentDidMount.calledOnce, "componentDidMount was not called").to.equal(true);31 timerWrapper.unmount()32 });33 it('calls componentWillUnmount', () => {34 spy(Timer.prototype, 'componentWillUnmount');35 timerWrapper = shallow(<Timer />);36 timerWrapper.unmount()37 expect(Timer.prototype.componentWillUnmount.calledOnce).to.equal(true);38 })...
componentDidMount.js
Source:componentDidMount.js
1import React, {Component} from 'react';2class ComponentDidMount extends Component {3 constructor (props) {4 console.log('constructor');5 super (props)6 // Inicializamos el state7 this.state = {scroll: 0}8 }9 componentWillMount () {10 console.log('ComponentWillMount');11 }12 componentDidMount () {13 console.log('ComponentDidMount');14 document.addEventListener('scroll', () => {15 this.setState({scroll: window.scrollY})16 })17 }18 19 render () {20 console.log('render');21 return (22 <div>23 <h4>Ciclo de montaje: componentDidMount</h4>24 <h3>Scroll: {this.state.scroll}</h3>25 <p>componentDidMount<br/>26 componentDidMount<br/>27 componentDidMount<br/>28 componentDidMount<br/>29 componentDidMount<br/>30 componentDidMount<br/>31 componentDidMount<br/>32 componentDidMount<br/>33 componentDidMount<br/>34 componentDidMount<br/>35 componentDidMount<br/>36 componentDidMount<br/>37 componentDidMount<br/>38 componentDidMount<br/>39 componentDidMount</p>40 </div>41 );42 }43}...
Using AI Code Generation
1import React from 'react';2import ReactDOM from 'react-dom';3import './index.css';4import App from './App';5import * as serviceWorker from './serviceWorker';6ReactDOM.render(<App />, document.getElementById('root'));7serviceWorker.unregister();8import React from 'react';9import './App.css';10import { BrowserRouter, Route, Switch } from 'react-router-dom';11import { Provider } from 'react-redux';12import store from './store';13import Login from './components/login';14import Register from './components/register';15import Home from './components/home';16import Dashboard from './components/dashboard';17import AddUser from './components/adduser';18import EditUser from './components/edituser';19import EditProfile from './components/editprofile';20import ViewUser from './components/viewuser';21import AddPost from './components/addpost';22import EditPost from './components/editpost';23import ViewPost from './components/viewpost';24import AddComment from './components/addcomment';25import EditComment from './components/editcomment';26import ViewComment from './components/viewcomment';27import AddCategory from './components/addcategory';28import EditCategory from './components/editcategory';29import ViewCategory from './components/viewcategory';30import AddTag from './components/addtag';31import EditTag from './components/edittag';32import ViewTag from './components/viewtag';33import AddRole from './components/addrole';34import EditRole from './components/editrole';35import ViewRole from './components/viewrole';36import AddPermission from './components/addpermission';37import EditPermission from './components/editpermission';38import ViewPermission from './components/viewpermission';39import AddPage from './components/addpage';40import EditPage from './components/editpage';41import ViewPage from './components/viewpage';42import AddMedia from './components/addmedia';43import EditMedia from './components/editmedia';44import ViewMedia from './components/viewmedia';45import AddMenu from './components/addmenu';46import EditMenu from './components/editmenu';47import ViewMenu from './components/viewmenu';48import AddMenuItem from './components/addmenuitem';49import EditMenuItem from './components/editmenuitem';50import ViewMenuItem from './components/viewmenuitem';51import AddWidget from './components/addwidget';52import EditWidget from './components/editwidget';53import ViewWidget from './components/viewwidget';54import AddWidgetArea from './components/addwidgetarea';55import EditWidgetArea from './components/editwidgetarea';56import ViewWidgetArea from
Using AI Code Generation
1class App extends React.Component {2 constructor(props) {3 super(props);4 this.state = {5 }6 this.updateState = this.updateState.bind(this);7 };8 updateState() {9 this.setState({data: 'Data updated from the child component...'})10 }11 render() {12 return (13 <Content myDataProp = {this.state.data}14 updateStateProp = {this.updateState}></Content>15 );16 }17}18class Content extends React.Component {19 render() {20 return (21 <button onClick = {this.props.updateStateProp}>CLICK</button>22 <h3>{this.props.myDataProp}</h3>23 );24 }25}26ReactDOM.render(<App/>, app);27class App extends React.Component {28 constructor(props) {29 super(props);30 this.state = {31 }32 this.updateState = this.updateState.bind(this);33 };34 updateState() {35 this.setState({data: 'Data updated from the child component...'})36 }37 render() {38 return (39 <Content myDataProp = {this.state.data}40 updateStateProp = {this.updateState}></Content>41 );42 }43}44class Content extends React.Component {45 componentDidMount() {46 setTimeout(() => {47 this.props.updateStateProp();48 }, 2000)49 }50 render() {51 return (52 <button onClick = {this.props.updateStateProp}>CLICK</button>53 <h3>{this.props.myDataProp}</h3>54 );55 }56}57ReactDOM.render(<App/>, app);58class App extends React.Component {59 constructor(props) {60 super(props);61 this.state = {62 }63 this.updateState = this.updateState.bind(this);64 this.clearInput = this.clearInput.bind(this);65 };66 updateState(e) {67 this.setState({data: e.target.value});68 }69 clearInput() {70 this.setState({data: ''});
Using AI Code Generation
1import React from 'react';2import ReactDOM from 'react-dom';3import App from './App';4import './index.css';5ReactDOM.render(<App />, document.getElementById('root'));6import React, { Component } from 'react';7import './App.css';8class App extends Component {9 constructor(props) {10 super(props);11 this.state = {12 }13 this.updateState = this.updateState.bind(this);14 };15 updateState() {16 this.setState({data: 'Data updated from the child component...'})17 }18 render() {19 return (20 <Content myDataProp = {this.state.data} updateStateProp = {this.updateState}></Content>21 );22 }23}24class Content extends Component {25 render() {26 return (27 <button onClick = {this.props.updateStateProp}>CLICK</button>28 <h3>{this.props.myDataProp}</h3>29 );30 }31}32export default App;33- **componentWillMount()**34- **componentDidMount()**35- **componentWillReceiveProps(newProps)**36- **shouldComponentUpdate(newProps, newState)**
Using AI Code Generation
1import React from 'react';2import ReactDOM from 'react-dom';3import App from './App';4import './index.css';5ReactDOM.render(6 document.getElementById('root')7);8import React, { Component } from 'react';9class App extends Component {10 componentDidMount() {11 console.log('Component DID MOUNT!')12 }13 render() {14 return (15 );16 }17}18export default App;19constructor()20getDerivedStateFromProps()21render()22componentDidMount()23componentWillUnmount()24getDerivedStateFromProps()25shouldComponentUpdate()26render()27getSnapshotBeforeUpdate()28componentDidUpdate()29constructor()30getDerivedStateFromProps()31render()32componentDidMount()33componentWillUnmount()34getDerivedStateFromProps()35shouldComponentUpdate()36render()37getSnapshotBeforeUpdate()38componentDidUpdate()
Using AI Code Generation
1import React from 'react';2import ReactDOM from 'react-dom';3import App from './App';4import './index.css';5ReactDOM.render(6 document.getElementById('root')7);8import React from 'react';9class ChildComponent extends React.Component{10 componentDidMount(){11 console.log('componentDidMount() is invoked');12 }13 render(){14 return(15 );16 }17}18export default ChildComponent;19import React from 'react';20class GrandChildComponent extends React.Component{21 componentDidMount(){22 console.log('componentDidMount() is invoked');23 }24 render(){25 return(26 );27 }28}29export default GrandChildComponent;30import React from 'react';31import ChildComponent from './ChildComponent';32import GrandChildComponent from './GrandChildComponent';33class App extends React.Component{34 componentDidMount(){35 console.log('componentDidMount() is invoked');36 }37 render(){38 return(39 );40 }41}42export default App;43## 6. componentWillUnmount() method44import React from 'react';45import ReactDOM from 'react-dom';46import App from './App';47import './index.css';48ReactDOM.render(49 document.getElementById('root')50);51import React from 'react';52class ChildComponent extends React.Component{53 componentWillUnmount(){54 console.log('componentWillUnmount() is invoked');55 }56 render(){57 return(58 );59 }60}61export default ChildComponent;62import React from 'react';63class GrandChildComponent extends React.Component{64 componentWillUnmount(){65 console.log('
Using AI Code Generation
1class App extends React.Component {2 componentDidMount() {3 console.log('The component has mounted.');4 }5 render() {6 }7};8class App extends React.Component {9 constructor(props) {10 super(props);11 this.state = {12 };13 }14 componentDidMount() {15 setTimeout(() => {16 this.setState({17 });18 }, 2000);19 }20 componentDidUpdate() {21 console.log('The component has updated.');22 }23 render() {24 return <h1>{this.state.name}</h1>25 }26};27class App extends React.Component {28 constructor(props) {29 super(props);30 this.state = {31 };32 this.toggleDisplayBio = this.toggleDisplayBio.bind(this);33 }34 toggleDisplayBio() {35 this.setState({ displayBio: !this.state.displayBio });36 }37 render() {38 return (39 {40 this.state.displayBio ? (41 <button onClick={this.toggleDisplayBio}>Show less</button>42 ) : (43 <button onClick={this.toggleDisplayBio}>Read more</button>44 }45 }46};47class App extends React.Component {48 constructor(props) {49 super(props);50 this.state = { displayBio: false };51 this.toggleDisplayBio = this.toggleDisplayBio.bind(this);52 }53 componentWillMount() {54 console.log('The component is about to mount.');55 }56 toggleDisplayBio() {57 this.setState({ displayBio: !this.state.displayBio });58 }59 render() {60 return (
Using AI Code Generation
1import React from 'react';2import ReactDOM from 'react-dom';3import Child from './Child';4export default class Parent extends React.Component {5 constructor(props) {6 super(props);7 this.state = {8 };9 }10 componentDidMount() {11 this.setState({12 });13 }14 render() {15 return (16 );17 }18}19ReactDOM.render(<Parent />, document.getElementById('app'));20import React from 'react';21export default class Child extends React.Component {22 constructor(props) {23 super(props);24 this.state = {25 };26 }27 componentDidMount() {28 this.setState({29 });30 }31 render() {32 return (33 <h1>My name is {this.state.name}.</h1>34 );35 }36}
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