React.createClass內的范圍問題

Question

我有一個要解決的范圍問題。

我將getTrackNotes導入到es6模塊中，並且我想按照以下內容在React類中引用它，但這設置為Track（React類）。

我該如何引用？

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函數將從頂部作用域繼承，但是您正在使用相同的name函數參數覆蓋它。 只需從函數參數列表中刪除getTrackNotes或將參數重命名為其他名稱即可：

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