How can we access input values in the then block of context promise in JavaScript? -

how can access input values in block of context promise in javascript? see code snippet below. processinserver() may invoked several times.

function processinserver(somedata){     return getpromise(somedata).then(function(data) {         return {"input": somedata, "output": data};     }); } var a1 = processinserver(somedata1); var a2 = processinserver(somedata2); 

you adjust getpromise constructor returns object. set somedata, promise properties of returned object. somedata should accessible @ object reference, promise object. use .then() chained promise set @ object review both promise value , input value.

function getpromise(somedata) {    this.somedata = somedata;    this.promise = promise.resolve(somedata * math.random() * math.pi);  }    var gp = new getpromise(123);  var result = gp.promise.then(function(data) {    return {      "input": gp.somedata,      "output": data    };  });    result.then(function(result) {    console.log(`result:${json.stringify(result, null, 2)}`,                `gp:${json.stringify(gp, null, 2)}`)  });