Array in jsx

arrayInJSX.jsx

// {[...Array(10)].map((x, i) =>
//   <div></div>
// )}

var Hello = React.createClass({
    getInitialState() {
    return {curr: 0} 
  },
  shouldComponentUpdate(nextProps, nextState) {
    return !(nextState.curr === this.state.curr)
  },
  handleClick(i) {
    this.setState({curr: i})
  },
  render: function() {
    // 批量生成
    return (
      <div>
        {[...Array(this.props.total)].map((x, i) =>
          <div 
            className={i === this.state.curr ? 'curr' : ''}
            onClick={this.handleClick.bind(null, i)}
            key={i}
          >
            {i === this.state.curr ? 'curr' : 'not curr'}
          </div>
        )}
      </div>
    )
  }
})

ReactDOM.render(
  <Hello total={5} />,
  document.getElementById('container')
)