Created
June 7, 2018 05:37
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Increment/Decrement Counter
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| import React, { Component } from 'react'; | |
| class App extends Component { | |
| constructor(props) { | |
| super(props); | |
| this.state = { | |
| clicks: 0, | |
| show: true | |
| }; | |
| this.IncrementItem = this.IncrementItem.bind(this); | |
| this.DecrementItem = this.DecrementItem.bind(this); | |
| this.ToggleClick = this.ToggleClick.bind(this); | |
| } | |
| IncrementItem() { | |
| this.setState({ clicks: this.state.clicks + 1 }); | |
| } | |
| DecrementItem() { | |
| this.setState({ clicks: this.state.clicks - 1 }); | |
| } | |
| ToggleClick() { | |
| this.setState({ show: !this.state.show }); | |
| } | |
| render() { | |
| return ( | |
| <div> | |
| <button onClick={this.IncrementItem}>Increment</button> | |
| <button onClick={this.DecrementItem}>Decrement</button> | |
| <button onClick={this.ToggleClick}> | |
| { this.state.show ? 'Hide number' : 'Show number' } | |
| </button> | |
| { this.state.show ? <h2>{this.state.clicks}</h2> : '' } | |
| </div> | |
| ); | |
| } | |
| } | |
| export default App; | |
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