componentWillReceiveProps，利用該生命周期凡桥，進(jìn)行重新render的預(yù)處理操作
class NewsList extends Component {
componentDidMount () {
this.fetchData(this.props.location);
}
fetchData(location) {
const type = location.pathname.replace('/', '') || 'top'
this.props.dispatch(fetchListData(type))
}
componentWillReceiveProps(nextProps) {
if (nextProps.location.pathname != this.props.location.pathname) {
this.fetchData(nextProps.location);
}
}
render () {
...
}
}
