Postman

Example1: Write a test to get id from the below response

{ 

   "data":{

                 "id":"abcdefgh"

                 "tye":"admin"

                }

}

Script: for tests

pm.test("Getting Id",()=>{

pm.globals.set("tempid":pm,response.json.data.id);

console.log(pm.gloabls.get("tempid"))

console.log(pm.variables.get("tempid")

Example2: Write a prerequisite script for the above 

const echoGetRequest={

url: 'Somegetreuest';

method: 'GET'

}

pm.sendRequest(echoGetRequest , function(err,res){

console.log(err?err: res.json());

if(err === null)

    {

     var responseJson= res.json();

'    pm.envrionment.set('tempid', responseJson.data.tempid)

    }

}

);