React onScroll not working

Question

I\'m trying to add onscroll event handler to specific dom element. Look at this code:

class ScrollingApp extends React.Component {
    ...
    _handleScroll(         


        

Answer 1

The root of the problem is that this.refs.list is a React component, not a DOM node. To get the DOM element, which has the addEventListener() method, you need to call ReactDOM.findDOMNode():

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);
    }
    /* .... */
}