pass value between promises and function

Question

when i run code get this error:

cant find variable: flagData

how can return(pass) data from promises implement(i use promises in another function)

resultOTP = OTP.fetchData(uniqueId, mobileNumber)

    .then((data) => {

      data.map((data)=>{
        if(data.message == "-1"){

          var flagData = 0
        }
        else {
          var flagData = 1
        }
      })


    })


    alert(flagData)

score 1 · Accepted Answer · answered Mar 18 '18 at 08:16

1

Firstly the variable is not defined in the right scope and even if it was it wouldn't have worked since you have an async call in which you are a changing the value, you might as well use async await like

async function fetchData() {
  const response = await OTP.fetchData(uniqueId, mobileNumber);
  let flagData = -1;
  if(response) {
     response.map((data)=>{
        if(data.message == "-1"){
          flagData = 0
        }
        else {
          flagData = 1
        }
      })
  }
  alert(flagData)
}

answered Mar 18 '18 at 08:16

Shubham Khatri

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Or if you want to keep your promises, put your alert() INSIDE the then callback. – naholyr Mar 18 '18 at 22:15
thanks, it's worked – codex Mar 20 '18 at 07:53

pass value between promises and function

1 Answers1