React onScroll not firing

Question

I have simple react component, I set onScroll event to that component but when I scroll it's not firing

import React, { Component, PropTypes } from 'react'

export default class MyComponent extends Component {
  _handleScroll(e) {
    console.log('scrolling')
  }

  render() {
    const style = {
      width: '100px',
      height: '100px',
      overflowY: 'hidden'
    }
    const innerDiv = {
      height: '300px',
      width: '100px',
      background: '#efefef'
    }
    return (
      <div style={style} onScroll={this._handleScroll}>
        <div style={innerDiv}/>
      </div>
    )
  }
}

maybe this helps: http://stackoverflow.com/questions/29725828/update-style-of-a-component-onscroll-in-react-js — el solo lobo, Feb 17 '17 at 14:53

score 20 · Answer 1 · answered Feb 18 '17 at 13:06

20

You need to change the value of overflowY to auto or scroll. Right now you're not getting a scrollbar because hidden causes the browser to hide the scrollbar.

answered Feb 18 '17 at 13:06

nathan

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general solution for this bug, thank you sir, I had overflow: hidden on the – que1326 Jul 09 '21 at 12:00
Thank you nathan! – ChethiyaKD Feb 10 '22 at 19:00
Thanks Nathan for your answer! Notice: you also need to fix an height to trigger the event – raphael-allard Apr 08 '22 at 09:39

score 1 · Answer 2 · edited May 23 '17 at 12:09

you need to add a ref to the DOM element:

React onScroll not working

class ScrollingApp extends React.Component {

    _handleScroll(ev) {
        console.log("Scrolling!");
    }
    componentDidMount() {
        const list = ReactDOM.findDOMNode(this.refs.list)
        list.addEventListener('scroll', this._handleScroll);
    }
    componentWillUnmount() {
        const list = ReactDOM.findDOMNode(this.refs.list)
        list.removeEventListener('scroll', this._handleScroll);
    }
    /* .... */
}

React onScroll not firing

2 Answers2