小程序中判断请求的连接是否生效

urlIsOk(urlData) {
    // let urlData = 'https://baidu.com/1622691283267/8e86e5de23f31b8b27323e3093300e5b/mp3/320kbps/NAC/8.572548/RG8312_001_full_wm_320.mp3'
    // let urlData = this.data.currentUrl
  let that  = this;

    wx.request({
      url: urlData,
      success: function( res ) {
        console.log("链接成功1",res)
        if(res.statusCode == 200) {
          console.log("链接成功1")
          return urlok = true
        } else {
          console.log("链接失效1")
              urlok = false
              console.log("链接可用不可用name",urlok)
              if(!urlok) {
                that.playMusicNew()
                that.setData({
                  isReload:false
                })
              }
        }
      },
    })

},