classname in react code example

Example 1: how to do a classname variable and string react

// You can use a template string
<div className={`d-flex justify-content-center ${showArrows}`} style={{ minHeight: '210px' }}>

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: conditional style prop react

style={{ textDecoration: todo.completed && "line-through" }}

style={{ textDecoration: todo.completed ? "line-through" : 'none' }}

Example 4: react classname

render() {
  return <span className="menu navigation-menu">Menu</span>
}

Example 5: inline style react

// Typical component with state-classes
<ul className="todo-list">
  {this.state.items.map((item,i)=>({
<li 
 className={classnames({ 'todo-list__item': true, 'is-complete': item.complete })}>
            {item.name}
</li>
 })}
</ul>

// Using inline-styles for state
<li className='todo-list__item'
 style={(item.complete) ? styles.complete : {}} />