React

by aalok123

HTML

<div id="app"></div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

h2 {
  font-weight: bold;
  margin-bottom: 15px;
}


.activeClass{
  color:  green;
  opacity:  1 ;
  background-color:white;
}

.inactiveClass{
  color: blue;
  opacity:  0.6;
  background-color: #ccc;
}

React

class TodoApp extends React.Component {
  constructor(props) {
    super(props)
    this.state = {
    	
    }
  }
  
  render() {
    return (
      <div>
        <h2>Todos:</h2>
        <button id="mybtn"  className={this.props.active ? 'activeClass' : 'inactiveClass'} >mybutton</button>
      </div>
    )
  }
}

ReactDOM.render(<TodoApp />, document.querySelector("#app"))