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React.js - componentWillReceiveProps内でpropsにアクセスする方法

Last updated at Posted at 2016-08-11

componentWillReceiveProps内でpropsにアクセスする方法

こんな感じで渡されたhogeに

<Piyo hoge={foo} />

componentWillReceiveProps内でアクセスするには

var Piyo = React.createClass({
  componentWillReceiveProps: (huga)=>{
    this.props.hoge; // ダメ(未更新)
    huga.hoge;       // よろしい
  },
  render: ()=>{ return (<div>{this.props.hoge}</div>); }
});

となる。

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