javascript - React.createClass 中的范围问题

Question

我有一个我正在努力解决的范围问题。

我将 getTrackNotes 导入到 es6 模块中，我想按照下面的方式在 React 类中引用它，但它被设置为 Track(React 类)。

如何引用它？

import { getTrackNotes } from '../utils/immutableInstruments';

const Track = React.createClass({

    componentDidMount() {

        const { trackId } = this.props.params;

        function updateTimeSequencer (socket, state, getTrackNotes, TimeSequencer, instruments, trackId)
        {

            //I want to call getTrackNotes here, but the scope is set to the Track React class
            **getTrackNotes();**

        }
        var instruments = this.props.instruments;

        socket.on('state', updateTimeSequencer.bind(this, socket));
     }

Answer 1

您的 getTrackNotes 函数将从顶级作用域继承，但您正在使用同名函数参数覆盖它。只需从函数参数列表中删除 getTrackNotes 或将参数重命名为其他名称:

function updateTimeSequencer (socket, state, thisIsSomethingElse, TimeSequencer, instruments, trackId)