SyntaxError:异步函数中出现意外的保留字“await”

Question

这是我的密码。无法找出发生错误的原因。该函数是异步类型。

const func = async () => {
      {submission[0].emoticons.map((item, idx) => {
        console.log('apngToFrame is working')
        const imgsrc = `${url}${item.id}`
        var container2 = document.querySelector('.output2')
        const response = await fetch(imgsrc)
        const buffer = await response.arrayBuffer()
        const apng = parseAPNG(buffer)
        if (apng instanceof Error){
          console.error('apng.message', apng.message)
          return ;
        }
        await apng.createImages()
        apng.frames.forEach(f => {
          container2.appendChild(f.imageElement)
        })
      })}
    }

Answer 1

为映射中使用的回调函数添加async

const func = async () => {
      {submission[0].emoticons.map(async(item, idx) => {
        console.log('apngToFrame is working')
        const imgsrc = `${url}${item.id}`
        var container2 = document.querySelector('.output2')
        const response = await fetch(imgsrc)
        const buffer = await response.arrayBuffer()
        const apng = parseAPNG(buffer)
        if (apng instanceof Error){
          console.error('apng.message', apng.message)
          return ;
        }
        await apng.createImages()
        apng.frames.forEach(f => {
          container2.appendChild(f.imageElement)
        })
      })}
    }