问题是 – 如何在呈现新集合后滚动到顶部？

'use strict';

// url of this component is #/:checklistId/:sectionId

var React = require('react'),Router = require('react-router'),sectionStore = require('./../stores/checklist-section-store');


function updateStateFromProps() {
  var self = this;
  sectionStore.getChecklistSectionContent({
    checklistId: this.getParams().checklistId,sectionId: this.getParams().sectionId
  }).then(function (section) {
    self.setState({
      section,componentReady: true
    });
  });

    this.setState({componentReady: false});
 }

var Checklist = React.createClass({
  mixins: [Router.State],componentWillMount: function () {
    updateStateFromProps.call(this);
  },componentWillReceiveProps(){
    updateStateFromProps.call(this);
   },render: function () {
  if (this.state.componentReady) {
    return(
      <section className='checklist-section'>
        <header className='section-header'>{ this.state.section.name }   </header>
        <Steps steps={ this.state.section.steps }/>
        <a href=`#/${this.getParams().checklistId}/${this.state.section.nextSection.Id}`>
          Next Section
        </a>
      </section>
    );
    } else {...}
  }
});

module.exports = Checklist;