React / ES6 onScroll事件未被触发

时间:2017-07-08 18:05:06

标签: javascript reactjs events ecmascript-6

我的渲染功能中有onScroll个事件。当滚动网站时,它应该触发listenScrollEvent函数,该函数输出一些数据。出于某种原因,它不会被触发。我已经在构造函数中绑定了该函数,但显然它没有帮助。

工作示例

import React, {Component} from 'react';
import { render } from 'react-dom';
import Hello from './Hello';

export class Home extends Component {
    constructor(props) {
      super();
          this.listenScrollEvent = this.listenScrollEvent.bind(this);

  }
    listenScrollEvent() {
    console.log('Scroll event detected!');
  }
    render() {
    return (
      <div className="App"  onScroll={this.listenScrollEvent}>

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      </div>
    );

  }
}

render(<Home />, document.getElementById('root'));

提前致谢!

2 个答案:

答案 0 :(得分:2)

通过添加:

修复了我的问题
  componentDidMount() {
    window.addEventListener('scroll', this.listenScrollEvent);
  }
  componentWillUnmount() {
    window.removeEventListener('scroll', this.listenScrollEvent);
  }

答案 1 :(得分:1)

这对我有用,

componentDidMount() {
  window.addEventListener('scroll', this.listenScrollEvent,true);
}

引用:https://github.com/facebook/react/issues/5042#issuecomment-359478860