javascript - JS : How to use return type of callback function for returning the main callee function

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I found few good links ( href="https://stackoverflow.com/questions/6847697/how-to-return-value-from-an-asynchronous-callback-function">How
to return value from an asynchronous callback function? and href="https://stackoverflow.com/questions/23339907/returning-a-value-from-callback-function-in-node-js">Returning
a value from callback function in Node.js etc) of SO but they are not not able
to provide solution to my problem.

My Problem: able
to get result of asynchronous call, but how I can use this result for returning of my
function?

onsubmit = "return
            checkForm(function(callBackResponse) { alert(callBackResponse)
            });"

Here getting
value of callBackResponse either as true or false, and want to use this value as :

onsubmit = "return
            responseFromCallBack;"

EDITED
: Here is my async stuff

function checkForm(callback)
            {return firstCallBack(function secondCallBack(response) {
 if (some
            conditions) {
 response = false;

            callback(response);

 }
 else {
 response =
            true;
 callback(response);
 }
 }

            );
}

class="post-text" itemprop="text">

class="normal">Answer

If i get ur issue correctly: />you want to "validate" (checkForm()) before submitting?!
in this case
set an event listener to the form submit-event...
prevent
(event.preventDefault()) the default behavior (submit) call
your function (checkForm()) if everything is fine, trigger the submit manually ;) />e.g. document.getElementById('myFormId').submit()

Cheerio :)