在React中显示更多信息

时间:2017-07-06 22:08:29

标签: javascript reactjs if-statement state show-hide

我想显示更多信息onclick,但我有不同的div来显示/隐藏。 所以。我是这样做的: 州是:

this.state = {
        showMore: false,
        showRewards: false,
        fees: false,
        showFees: false
    };

其中一个div:

                      <div className='some'>
                          <h3 >Rewards <i className="icon-im-rewards"></i></h3>
                                  <h5 className="showMoreDetails" onClick={ () => this.show('rewards') }>{ showRewards ? '-' : '+' } { showRewards ? 'Show Less' : 'Show More' }</h5>
                          {   showRewards && detail.rewards.reward.map((name, i) =>
                                  <p key={i}> { name }</p>
                              )
                          }
                      </div>

功能:

show(name){     让{showMore,showRewards,showFees} = this.state;

if (name === 'hightlights' && showMore === false) {
    this.setState({
        showMore: true
    });
} else {
    this.setState({
        showMore: false
    });
}

if (name === 'rewards' && showRewards === false) {
    this.setState({
        showRewards: true
    });
} else {
    this.setState({
        showRewards: false
    });
}

if (name === 'fees' && showFees === false) {
    this.setState({
        showFees: true
    });
} else {
    this.setState({
        showFees: false
    });
}

这太长,太丑了,不能正常工作(我一次只能看到一个扩展的div)如何​​改进它?

2 个答案:

答案 0 :(得分:2)

这是一种更好,更清洁的方式:

function show (name) { 

  let { showMore, showRewards, showFees } = this.state;
  showMore = name === 'hightlights' && showMore === false;
  showRewards = name === 'rewards' && showRewards === false;
  showFees = name === 'fees' && showFees === false;

  this.setState({
    showFees,
    showRewards, 
    showMore
  });

答案 1 :(得分:0)

如果你能向我们展示细节和结构的结构可能会更容易。奖励。我猜你在这里映射一个单独的元素,这就是它打印单个元素的原因。但是,请尝试更改此行,

detail.rewards.reward.map((name, i) => <p key={i}> { name }</p> )

替换为以下代码:

detail.rewards.map((reward, i) => <p key={i}> { reward.name }</p> )