Javascript 使用wait时出现意外标识符

我目前正在尝试使用async/await来实现一个要求循环同步的函数

这就是功能：

async channelList(resolve, reject) {
    let query = ['channellist'].join(' ');

    this.query.exec(query)
    .then(response => {
        let channelsRaw = response[0].split('|');
        let channels = [];

        channelsRaw.forEach(data => {
            let dataParsed = ResponseParser.parseLine(data);

            let method = new ChannelInfoMethod(this.query);
            let channel = await method.run(dataParsed.cid);

            channels.push(channel);
        });

        resolve(channels);
    })
    .catch(error => reject(error));
}

channelsRaw.forEach(async (data) => {
    let dataParsed = ResponseParser.parseLine(data);

    let method = new ChannelInfoMethod(this.query);
    let channel = await method.run(dataParsed.cid);

    channels.push(channel);
});

当我尝试运行它时，会出现以下错误：

let channel = await method.run(dataParsed.cid);
                    ^^^^^^
SyntaxError: Unexpected identifier

原因可能是什么？

---

谢谢

您的

async

是在

channelList

上定义的，而不是在包含

wait

的箭头函数上定义的。将

async

移动到该箭头函数：

async channelList(resolve, reject) {
    let query = ['channellist'].join(' ');

    this.query.exec(query)
    .then(response => {
        let channelsRaw = response[0].split('|');
        let channels = [];

        channelsRaw.forEach(data => {
            let dataParsed = ResponseParser.parseLine(data);

            let method = new ChannelInfoMethod(this.query);
            let channel = await method.run(dataParsed.cid);

            channels.push(channel);
        });

        resolve(channels);
    })
    .catch(error => reject(error));
}

channelsRaw.forEach(async (data) => {
    let dataParsed = ResponseParser.parseLine(data);

    let method = new ChannelInfoMethod(this.query);
    let channel = await method.run(dataParsed.cid);

    channels.push(channel);
});

---

另外，由于您使用的是异步，因此您可以将整个承诺链异步化。

我现在觉得很傻，没有意识到它是在回调中。谢谢：）我犯了同样的错误，我没有想到匿名函数实际上就是函数！