conditionally add css class react code example

Example 1: react conditional classname

<div className={`banner ${active ? "active" : ""}`}>{children}</div>

Example 2: conditional style react

class App extends Component {
  constructor() {
    super()
    this.state = { isRed: true }
  }

  render() {
    const isRed = this.state.isRed

    return <p style={{ color: isRed ? 'red' : 'blue' }}>Example Text</p>
  }
}

Example 3: react conditional class

<div className={"btn-group pull-right " + (this.props.showBulkActions ? 'show' : 'hidden')}>

Example 4: conditional style react

<ImageBackground source={Images.bg} style={ (navHeight==0) ? styles.bg1 : styles.bg2}>

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