reactjs - React onDrop 没有触发

Question

下面是我尝试使用的示例代码，它是 react + TypeScript。onDragEnter 和 onDragOver 工作正常，但 onDrop 事件不正常。

import * as React from 'react';

export class FileZone extends React.Component {

  onDragOver = (e) => {
    let event = e as Event;
    event.stopPropagation();
  }

  onDragEnter = (e) => {
    let event = e as Event;
    event.stopPropagation();
  }

  onFileDrop = (e) => {
    let event = e as Event;
    event.stopPropagation();

    console.log("onFileDrop");
    alert("dropped")
  }

  render() {
    return (
      <div
        onDragEnter={this.onDragEnter}
        onDragOver={this.onDragOver}
        onDrop={this.onFileDrop}>
        Drag and drop file here
      </div>)
  }
}

Answer 1

最后我遇到了问题，出于某种原因我必须像这样处理 onDragOver :

onDragOver = (e) => {
let event = e as Event;
event.stopPropagation();
event.preventDefault();
}

这解决了我的问题。