js: 獲取Blob的值

this.ws.onmessage = async (msg) => {
      console.log('從服務端獲取到了數據')
      // 從真正服務端發送過來的原始數據時在msg中的data字段
      console.log(msg.data)

      // 獲取Blob的值
      const text = await (new Response(msg.data)).text()
      console.log(text)

      const recvData = JSON.parse(msg.data)
      const socketType = recvData.socketType
      // 判斷回調函數是否存在
      if (this.callBackMapping[socketType]) {
        const action = recvData.action
        if (action === 'getData') {
          const realData = JSON.parse(recvData.data)
          this.callBackMapping[socketType].call(this, realData)
        } else if (action === 'fullScreen') {
          this.callBackMapping[socketType].call(this, recvData)
        } else if (action === 'themeChange') {
          this.callBackMapping[socketType].call(this, recvData)
        }
      }
    }

參考鏈接

https://developer.mozilla.org/zh-CN/docs/Web/API/Blob