How to use componentWillUnmount method in root

Best JavaScript code snippet using root

ReactLegacyErrorBoundaries-test.internal.js

Source:ReactLegacyErrorBoundaries-test.internal.js Github

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...62 }63 componentDidUpdate() {64 log.push('BrokenConstructor componentDidUpdate');65 }66 componentWillUnmount() {67 log.push('BrokenConstructor componentWillUnmount');68 }69 };70 BrokenComponentWillMount = class extends React.Component {71 constructor(props) {72 super(props);73 log.push('BrokenComponentWillMount constructor');74 }75 render() {76 log.push('BrokenComponentWillMount render');77 return <div>{this.props.children}</div>;78 }79 UNSAFE_componentWillMount() {80 log.push('BrokenComponentWillMount componentWillMount [!]');81 throw new Error('Hello');82 }83 componentDidMount() {84 log.push('BrokenComponentWillMount componentDidMount');85 }86 UNSAFE_componentWillReceiveProps() {87 log.push('BrokenComponentWillMount componentWillReceiveProps');88 }89 UNSAFE_componentWillUpdate() {90 log.push('BrokenComponentWillMount componentWillUpdate');91 }92 componentDidUpdate() {93 log.push('BrokenComponentWillMount componentDidUpdate');94 }95 componentWillUnmount() {96 log.push('BrokenComponentWillMount componentWillUnmount');97 }98 };99 BrokenComponentDidMount = class extends React.Component {100 constructor(props) {101 super(props);102 log.push('BrokenComponentDidMount constructor');103 }104 render() {105 log.push('BrokenComponentDidMount render');106 return <div>{this.props.children}</div>;107 }108 UNSAFE_componentWillMount() {109 log.push('BrokenComponentDidMount componentWillMount');110 }111 componentDidMount() {112 log.push('BrokenComponentDidMount componentDidMount [!]');113 throw new Error('Hello');114 }115 UNSAFE_componentWillReceiveProps() {116 log.push('BrokenComponentDidMount componentWillReceiveProps');117 }118 UNSAFE_componentWillUpdate() {119 log.push('BrokenComponentDidMount componentWillUpdate');120 }121 componentDidUpdate() {122 log.push('BrokenComponentDidMount componentDidUpdate');123 }124 componentWillUnmount() {125 log.push('BrokenComponentDidMount componentWillUnmount');126 }127 };128 BrokenComponentWillReceiveProps = class extends React.Component {129 constructor(props) {130 super(props);131 log.push('BrokenComponentWillReceiveProps constructor');132 }133 render() {134 log.push('BrokenComponentWillReceiveProps render');135 return <div>{this.props.children}</div>;136 }137 UNSAFE_componentWillMount() {138 log.push('BrokenComponentWillReceiveProps componentWillMount');139 }140 componentDidMount() {141 log.push('BrokenComponentWillReceiveProps componentDidMount');142 }143 UNSAFE_componentWillReceiveProps() {144 log.push(145 'BrokenComponentWillReceiveProps componentWillReceiveProps [!]',146 );147 throw new Error('Hello');148 }149 UNSAFE_componentWillUpdate() {150 log.push('BrokenComponentWillReceiveProps componentWillUpdate');151 }152 componentDidUpdate() {153 log.push('BrokenComponentWillReceiveProps componentDidUpdate');154 }155 componentWillUnmount() {156 log.push('BrokenComponentWillReceiveProps componentWillUnmount');157 }158 };159 BrokenComponentWillUpdate = class extends React.Component {160 constructor(props) {161 super(props);162 log.push('BrokenComponentWillUpdate constructor');163 }164 render() {165 log.push('BrokenComponentWillUpdate render');166 return <div>{this.props.children}</div>;167 }168 UNSAFE_componentWillMount() {169 log.push('BrokenComponentWillUpdate componentWillMount');170 }171 componentDidMount() {172 log.push('BrokenComponentWillUpdate componentDidMount');173 }174 UNSAFE_componentWillReceiveProps() {175 log.push('BrokenComponentWillUpdate componentWillReceiveProps');176 }177 UNSAFE_componentWillUpdate() {178 log.push('BrokenComponentWillUpdate componentWillUpdate [!]');179 throw new Error('Hello');180 }181 componentDidUpdate() {182 log.push('BrokenComponentWillUpdate componentDidUpdate');183 }184 componentWillUnmount() {185 log.push('BrokenComponentWillUpdate componentWillUnmount');186 }187 };188 BrokenComponentDidUpdate = class extends React.Component {189 static defaultProps = {190 errorText: 'Hello',191 };192 constructor(props) {193 super(props);194 log.push('BrokenComponentDidUpdate constructor');195 }196 render() {197 log.push('BrokenComponentDidUpdate render');198 return <div>{this.props.children}</div>;199 }200 UNSAFE_componentWillMount() {201 log.push('BrokenComponentDidUpdate componentWillMount');202 }203 componentDidMount() {204 log.push('BrokenComponentDidUpdate componentDidMount');205 }206 UNSAFE_componentWillReceiveProps() {207 log.push('BrokenComponentDidUpdate componentWillReceiveProps');208 }209 UNSAFE_componentWillUpdate() {210 log.push('BrokenComponentDidUpdate componentWillUpdate');211 }212 componentDidUpdate() {213 log.push('BrokenComponentDidUpdate componentDidUpdate [!]');214 throw new Error(this.props.errorText);215 }216 componentWillUnmount() {217 log.push('BrokenComponentDidUpdate componentWillUnmount');218 }219 };220 BrokenComponentWillUnmount = class extends React.Component {221 static defaultProps = {222 errorText: 'Hello',223 };224 constructor(props) {225 super(props);226 log.push('BrokenComponentWillUnmount constructor');227 }228 render() {229 log.push('BrokenComponentWillUnmount render');230 return <div>{this.props.children}</div>;231 }232 UNSAFE_componentWillMount() {233 log.push('BrokenComponentWillUnmount componentWillMount');234 }235 componentDidMount() {236 log.push('BrokenComponentWillUnmount componentDidMount');237 }238 UNSAFE_componentWillReceiveProps() {239 log.push('BrokenComponentWillUnmount componentWillReceiveProps');240 }241 UNSAFE_componentWillUpdate() {242 log.push('BrokenComponentWillUnmount componentWillUpdate');243 }244 componentDidUpdate() {245 log.push('BrokenComponentWillUnmount componentDidUpdate');246 }247 componentWillUnmount() {248 log.push('BrokenComponentWillUnmount componentWillUnmount [!]');249 throw new Error(this.props.errorText);250 }251 };252 BrokenComponentWillMountErrorBoundary = class extends React.Component {253 constructor(props) {254 super(props);255 this.state = {error: null};256 log.push('BrokenComponentWillMountErrorBoundary constructor');257 }258 render() {259 if (this.state.error) {260 log.push('BrokenComponentWillMountErrorBoundary render error');261 return <div>Caught an error: {this.state.error.message}.</div>;262 }263 log.push('BrokenComponentWillMountErrorBoundary render success');264 return <div>{this.props.children}</div>;265 }266 UNSAFE_componentWillMount() {267 log.push(268 'BrokenComponentWillMountErrorBoundary componentWillMount [!]',269 );270 throw new Error('Hello');271 }272 componentDidMount() {273 log.push('BrokenComponentWillMountErrorBoundary componentDidMount');274 }275 componentWillUnmount() {276 log.push('BrokenComponentWillMountErrorBoundary componentWillUnmount');277 }278 componentDidCatch(error) {279 log.push('BrokenComponentWillMountErrorBoundary componentDidCatch');280 this.setState({error});281 }282 };283 BrokenComponentDidMountErrorBoundary = class extends React.Component {284 constructor(props) {285 super(props);286 this.state = {error: null};287 log.push('BrokenComponentDidMountErrorBoundary constructor');288 }289 render() {290 if (this.state.error) {291 log.push('BrokenComponentDidMountErrorBoundary render error');292 return <div>Caught an error: {this.state.error.message}.</div>;293 }294 log.push('BrokenComponentDidMountErrorBoundary render success');295 return <div>{this.props.children}</div>;296 }297 UNSAFE_componentWillMount() {298 log.push('BrokenComponentDidMountErrorBoundary componentWillMount');299 }300 componentDidMount() {301 log.push('BrokenComponentDidMountErrorBoundary componentDidMount [!]');302 throw new Error('Hello');303 }304 componentWillUnmount() {305 log.push('BrokenComponentDidMountErrorBoundary componentWillUnmount');306 }307 componentDidCatch(error) {308 log.push('BrokenComponentDidMountErrorBoundary componentDidCatch');309 this.setState({error});310 }311 };312 BrokenRenderErrorBoundary = class extends React.Component {313 constructor(props) {314 super(props);315 this.state = {error: null};316 log.push('BrokenRenderErrorBoundary constructor');317 }318 render() {319 if (this.state.error) {320 log.push('BrokenRenderErrorBoundary render error [!]');321 throw new Error('Hello');322 }323 log.push('BrokenRenderErrorBoundary render success');324 return <div>{this.props.children}</div>;325 }326 UNSAFE_componentWillMount() {327 log.push('BrokenRenderErrorBoundary componentWillMount');328 }329 componentDidMount() {330 log.push('BrokenRenderErrorBoundary componentDidMount');331 }332 componentWillUnmount() {333 log.push('BrokenRenderErrorBoundary componentWillUnmount');334 }335 componentDidCatch(error) {336 log.push('BrokenRenderErrorBoundary componentDidCatch');337 this.setState({error});338 }339 };340 BrokenRender = class extends React.Component {341 constructor(props) {342 super(props);343 log.push('BrokenRender constructor');344 }345 render() {346 log.push('BrokenRender render [!]');347 throw new Error('Hello');348 }349 UNSAFE_componentWillMount() {350 log.push('BrokenRender componentWillMount');351 }352 componentDidMount() {353 log.push('BrokenRender componentDidMount');354 }355 UNSAFE_componentWillReceiveProps() {356 log.push('BrokenRender componentWillReceiveProps');357 }358 UNSAFE_componentWillUpdate() {359 log.push('BrokenRender componentWillUpdate');360 }361 componentDidUpdate() {362 log.push('BrokenRender componentDidUpdate');363 }364 componentWillUnmount() {365 log.push('BrokenRender componentWillUnmount');366 }367 };368 NoopErrorBoundary = class extends React.Component {369 constructor(props) {370 super(props);371 log.push('NoopErrorBoundary constructor');372 }373 render() {374 log.push('NoopErrorBoundary render');375 return <BrokenRender />;376 }377 UNSAFE_componentWillMount() {378 log.push('NoopErrorBoundary componentWillMount');379 }380 componentDidMount() {381 log.push('NoopErrorBoundary componentDidMount');382 }383 componentWillUnmount() {384 log.push('NoopErrorBoundary componentWillUnmount');385 }386 componentDidCatch() {387 log.push('NoopErrorBoundary componentDidCatch');388 }389 };390 Normal = class extends React.Component {391 static defaultProps = {392 logName: 'Normal',393 };394 constructor(props) {395 super(props);396 log.push(`${this.props.logName} constructor`);397 }398 render() {399 log.push(`${this.props.logName} render`);400 return <div>{this.props.children}</div>;401 }402 UNSAFE_componentWillMount() {403 log.push(`${this.props.logName} componentWillMount`);404 }405 componentDidMount() {406 log.push(`${this.props.logName} componentDidMount`);407 }408 UNSAFE_componentWillReceiveProps() {409 log.push(`${this.props.logName} componentWillReceiveProps`);410 }411 UNSAFE_componentWillUpdate() {412 log.push(`${this.props.logName} componentWillUpdate`);413 }414 componentDidUpdate() {415 log.push(`${this.props.logName} componentDidUpdate`);416 }417 componentWillUnmount() {418 log.push(`${this.props.logName} componentWillUnmount`);419 }420 };421 ErrorBoundary = class extends React.Component {422 constructor(props) {423 super(props);424 this.state = {error: null};425 log.push(`${this.props.logName} constructor`);426 }427 render() {428 if (this.state.error && !this.props.forceRetry) {429 log.push(`${this.props.logName} render error`);430 return this.props.renderError(this.state.error, this.props);431 }432 log.push(`${this.props.logName} render success`);433 return <div>{this.props.children}</div>;434 }435 componentDidCatch(error) {436 log.push(`${this.props.logName} componentDidCatch`);437 this.setState({error});438 }439 UNSAFE_componentWillMount() {440 log.push(`${this.props.logName} componentWillMount`);441 }442 componentDidMount() {443 log.push(`${this.props.logName} componentDidMount`);444 }445 UNSAFE_componentWillReceiveProps() {446 log.push(`${this.props.logName} componentWillReceiveProps`);447 }448 UNSAFE_componentWillUpdate() {449 log.push(`${this.props.logName} componentWillUpdate`);450 }451 componentDidUpdate() {452 log.push(`${this.props.logName} componentDidUpdate`);453 }454 componentWillUnmount() {455 log.push(`${this.props.logName} componentWillUnmount`);456 }457 };458 ErrorBoundary.defaultProps = {459 logName: 'ErrorBoundary',460 renderError(error, props) {461 return (462 <div ref={props.errorMessageRef}>463 Caught an error: {error.message}.464 </div>465 );466 },467 };468 RetryErrorBoundary = class extends React.Component {469 constructor(props) {470 super(props);471 log.push('RetryErrorBoundary constructor');472 }473 render() {474 log.push('RetryErrorBoundary render');475 return <BrokenRender />;476 }477 UNSAFE_componentWillMount() {478 log.push('RetryErrorBoundary componentWillMount');479 }480 componentDidMount() {481 log.push('RetryErrorBoundary componentDidMount');482 }483 componentWillUnmount() {484 log.push('RetryErrorBoundary componentWillUnmount');485 }486 componentDidCatch(error) {487 log.push('RetryErrorBoundary componentDidCatch [!]');488 // In Fiber, calling setState() (and failing) is treated as a rethrow.489 this.setState({});490 }491 };492 ErrorMessage = class extends React.Component {493 constructor(props) {494 super(props);495 log.push('ErrorMessage constructor');496 }497 UNSAFE_componentWillMount() {498 log.push('ErrorMessage componentWillMount');499 }500 componentDidMount() {501 log.push('ErrorMessage componentDidMount');502 }503 componentWillUnmount() {504 log.push('ErrorMessage componentWillUnmount');505 }506 render() {507 log.push('ErrorMessage render');508 return <div>Caught an error: {this.props.message}.</div>;509 }510 };511 });512 it('does not swallow exceptions on mounting without boundaries', () => {513 let container = document.createElement('div');514 expect(() => {515 ReactDOM.render(<BrokenRender />, container);516 }).toThrow('Hello');517 container = document.createElement('div');...

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componentWillUnmount.test.js

Source:componentWillUnmount.test.js Github

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...13 describe('top-level componentWillUnmount', () => {14 it('should invoke componentWillUnmount for top-level components', () => {15 class Foo extends Component {16 componentDidMount() {}17 componentWillUnmount() {}18 render() {19 return 'foo';20 }21 }22 class Bar extends Component {23 componentDidMount() {}24 componentWillUnmount() {}25 render() {26 return 'bar';27 }28 }29 sinon.spy(Foo.prototype, 'componentDidMount');30 sinon.spy(Foo.prototype, 'componentWillUnmount');31 sinon.spy(Foo.prototype, 'render');32 sinon.spy(Bar.prototype, 'componentDidMount');33 sinon.spy(Bar.prototype, 'componentWillUnmount');34 sinon.spy(Bar.prototype, 'render');35 render(<Foo />, scratch);36 expect(Foo.prototype.componentDidMount, 'initial render').to.have.been37 .calledOnce;38 render(<Bar />, scratch);39 expect(Foo.prototype.componentWillUnmount, 'when replaced').to.have.been40 .calledOnce;41 expect(Bar.prototype.componentDidMount, 'when replaced').to.have.been42 .calledOnce;43 render(<div />, scratch);44 expect(Bar.prototype.componentWillUnmount, 'when removed').to.have.been45 .calledOnce;46 });47 it('should only remove dom after componentWillUnmount was called', () => {48 class Foo extends Component {49 componentWillUnmount() {50 expect(document.getElementById('foo')).to.not.equal(null);51 }52 render() {53 return <div id="foo" />;54 }55 }56 render(<Foo />, scratch);57 render(null, scratch);58 });59 });...

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WillUnmount.jsx

Source:WillUnmount.jsx Github

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...7 }8 render() {9 return (10 <>11 <h1>componentWillUnmount()</h1>12 <ul data-ul="componentWillUnmount()">13 <li>componentWillUnmount() method is come in Unmount phase</li>14 <li>when component is remove from dom in that condition work componentWillUnmount() method</li>15 </ul>16 <ul data-ul="how to work componentWillUnmount()">17 </ul>18 <Alert severity="info">pleace navigate to another routes than work componentWillUnmount() method</Alert>19 <br />20 <ReactCode file="Example" dot="jsx" code={`21 import React, { Component } from 'react'22 23 export default class Example extends Component {24 25 render() {26 return (27 <>28 29 </>30 )31 }32 componentWillUnmount() {33 alert("componentWillUnmount work!");34 }35 }36 37 `}/>38 <ul data-ul="when should use componentWillUnmount() method">39 <li>when we calling to api but we want to navigate back so we need to cancal to request in that condition we use componentWillUnmount() method</li>40 <li>when we want to stop setTimeout</li>41 </ul>42 </>43 );44 }45 componentWillUnmount() {46 alert("componentWillUnmount work!");47 }...

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Using AI Code Generation

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1import React from 'react';2import ReactDOM from 'react-dom';3class App extends React.Component {4 constructor() {5 super();6 this.state = {val: 0};7 this.update = this.update.bind(this);8 }9 update() {10 this.setState({val: this.state.val + 1})11 }12 componentWillMount() {13 console.log('mounting');14 }15 render() {16 console.log('rendering!');17 return <button onClick={this.update}>{this.state.val}</button>18 }19 componentDidMount() {20 console.log('mounted');21 }22 componentWillUnmount() {23 console.log('bye!');24 }25}26class Wrapper extends React.Component {27 mount() {28 ReactDOM.render(<App />, document.getElementById('a'));29 }30 unmount() {31 ReactDOM.unmountComponentAtNode(document.getElementById('a'));32 }33 render() {34 return (35 <button onClick={this.mount.bind(this)}>Mount</button>36 <button onClick={this.unmount.bind(this)}>Unmount</button>37 }38}39import React from 'react';40import ReactDOM from 'react-dom';41import App from './test';42ReactDOM.render(43 document.getElementById('app')44);45module.exports = {46 output: {47 },48 module: {49 {test: /\.js$/, loader: 'babel-loader'}50 }51}52{53}54{55 "dependencies": {

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Using AI Code Generation

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1import React from 'react';2class Root extends React.Component {3 constructor() {4 super();5 this.state = {6 }7 this.setNewNumber = this.setNewNumber.bind(this)8 };9 setNewNumber() {10 this.setState({data: this.state.data + 1})11 }12 render() {13 return (14 <button onClick = {this.setNewNumber}>INCREMENT</button>15 <Content myNumber = {this.state.data}></Content>16 );17 }18}19class Content extends React.Component {20 componentWillMount() {21 console.log('Component WILL MOUNT!')22 }23 componentDidMount() {24 console.log('Component DID MOUNT!')25 }26 componentWillReceiveProps(newProps) { 27 console.log('Component WILL RECIEVE PROPS!')28 }29 shouldComponentUpdate(newProps, newState) {30 return true;31 }32 componentWillUpdate(nextProps, nextState) {33 console.log('Component WILL UPDATE!');34 }35 componentDidUpdate(prevProps, prevState) {36 console.log('Component DID UPDATE!')37 }38 componentWillUnmount() {39 console.log('Component WILL UNMOUNT!')40 }41 render() {42 return (43 <h3>{this.props.myNumber}</h3>44 );45 }46}47export default Root;48import React from 'react';49import ReactDOM from 'react-dom';50import Root from './test';51ReactDOM.render(<Root/>, document.getElementById('root'));52import React from 'react';53import ReactDOM from 'react-dom';54import Root from './test';55ReactDOM.render(<Root/>, document.getElementById('root'));56import React from 'react';57class Root extends React.Component {58 constructor() {59 super();60 this.state = {

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Using AI Code Generation

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1import React, { Component } from 'react';2import { render } from 'react-dom';3import './style.css';4import Child from './Child';5class App extends Component {6 constructor() {7 super();8 this.state = {9 };10 }11 componentWillUnmount() {12 alert('component will unmount');13 }14 render() {15 return (16 <h1>Hello {this.state.name}</h1>17 );18 }19}20render(<App />, document.getElementById('root'));

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Using AI Code Generation

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1import React from 'react';2import ReactDOM from 'react-dom';3import { BrowserRouter as Router, Route, Link } from "react-router-dom";4import './index.css';5class App extends React.Component {6 constructor(props) {7 super(props);8 this.state = { message: "Hello World" };9 }10 render() {11 return (12 <h1>{this.state.message}</h1>13 <button onClick={() => this.setState({ message: "Goodbye World" })}>14 );15 }16 componentWillUnmount() {17 alert("The component named Header is about to be unmounted.");18 }19}20ReactDOM.render(<App />, document.getElementById('root'));21import React from 'react';22import ReactDOM from 'react-dom';23import { BrowserRouter as Router, Route, Link } from "react-router-dom";24import './index.css';25import App from './App';26import About from './About';27import Contact from './Contact';28import * as serviceWorker from './serviceWorker';29const routing = (30 <Route exact path="/" component={App} />31 <Route path="/about" component={About} />32 <Route path="/contact" component={Contact} />33);34ReactDOM.render(routing, document.getElementById('root'));35serviceWorker.unregister();

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Using AI Code Generation

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1import React, { Component } from 'react';2import Child from './child';3class Parent extends Component {4 constructor(props) {5 super(props);6 this.state = {7 }8 }9 toggleChild = () => {10 this.setState({ showChild: !this.state.showChild })11 }12 toggleGreeting = () => {13 this.setState({ showGreeting: !this.state.showGreeting })14 }15 render() {16 return (17 <button onClick={this.toggleChild}>Toggle Child Component</button>18 <button onClick={this.toggleGreeting}>Toggle Greeting</button>19 {this.state.showChild ? <Child /> : null}20 {this.state.showGreeting ? <h1>Hello World!</h1> : null}21 }22}23export default Parent;24import React, { Component } from 'react';25class Child extends Component {26 componentWillUnmount() {27 console.log('Child Component Will Unmount');28 }29 render() {30 return (31 }32}33export default Child;34import React, { Component } from 'react';35import Child from './child';36class Parent extends Component {37 constructor(props) {38 super(props);39 this.state = {40 }41 }42 toggleChild = () => {43 this.setState({ showChild: !this.state.showChild })44 }45 toggleGreeting = () => {46 this.setState({ showGreeting: !this.state.showGreeting })47 }48 render() {49 return (50 <button onClick={this.toggleChild}>Toggle Child Component</button>51 <button onClick={this.toggleGreeting}>Toggle Greeting</button>52 {this.state.showChild ? <Child /> : null}53 {this.state.showGreeting ? <h1>Hello World!</h1> : null}54 }55}56export default Parent;57import React, { Component } from 'react';58class Child extends Component {59 componentDidUpdate() {60 console.log('Child Component Did

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