vuejs前端如何获取服务器二维码的状态？

vuejs前端如何获取服务器二维码的状态？下面编程教程网小编给大家详细介绍一下实现代码！

具体实现代码如下：

// 获取后台状态
async checkQRcodeStatus() {
  const res = await checkQRcode({
    uid: this.uid,
    time: this.time
  })
  if(res && res.code == 200) {
    let codeStatus - res.codeStatus
    this.codeStatus =  codeStatus
    let loginData = res.loginData
    switch(codeStatus) {
       case 3:
          console.log("二维码过期")
          clearInterval(this.qsCodeTimer)
          this.qsCodeTimer = null
          this.effectiveTime = 0
       break;
       case 2:
          console.log("扫码通过")
          clearInterval(this.qsCodeTimer)
          this.qsCodeTimer = null
          this.$emit("login", loginData)
       break;
       case 1:
          console.log("未扫码")
          this.effectiveTime > 0  && this.checkQRcodeStatus()
       break;
       default:
       break;
    }
  } 
},