Submit a POST request using CoffeeScript to get a string from the returned object

I am encountering a small issue. Whenever I execute

myVar = $.post('/check_2/', JSON.stringify({"newname": window.NEWNAME,}), callback, 'json')

The variable 'myVar' holds an object. When I use console.log myVar, the output is something like:

Object {readyState: 1, setRequestHeader: function, getAllResponseHeaders: function,getResponseHeader: function, overrideMimeType: function…}
abort: function (a){a=a||"abort",p&&p.abort(a),w(0,a);return this}
always: function (){i.done.apply(i,arguments).fail.apply(i,arguments);return this}
complete: function (){if(c){var a=c.length;m(arguments),i?k=c.length:e&&e!==!0&&(j=a,n(e[0],e[1]))}return this}
[...]

When I try console.log myVar.success (for instance), it displays the respective success information. However, when I attempt to access myVar.responseText (which should contain the call result), it constantly returns undefined, making it difficult for me to retrieve the desired data.

Any suggestions on how I can access that crucial data?

I realize that I may have misunderstood something regarding post calls, but due to my confusion, I am unsure of the mistake I am making.

I opted for using post instead of get because I need to transmit data to the backend in order to perform database checks.

EDIT: The point where I place console.log:

check2: (callback) ->
  console.log "Starting..."
  myVar = $.post('/check_2/', JSON.stringify({"newname": window.NEWNAME,}), callback, 'json')
  console.log myVar
  console.log "success example"
  console.log myVar.success
  console.log "responseText"
  console.log myVar.responseText

EDIT 2 Here is an image of the object displayed by console.log myVar

Answer â„–1

$.post serves as an AJAX request function, instead of returning the server's response outright, it yields a jqXHR promise:

jQuery.post( url [, data ] [, success(data, textStatus, jqXHR) ] [, dataType ] )
Returns: jqXHR

Description: Retrieve information from the server via an HTTP POST request.

To acquire data from an AJAX call, one must obtain it within the callback function:

fn = (data, status, jqxhr) ->
    # Your data is stored in `data`, proceed with necessary operations on `data` here
    ...
    # Finally, manually invoke the other `callback` function
    callback(data, status, jqxhr)

$.post('/check_2/', JSON.stringify({"newname": window.NEWNAME,}), fn, 'json')

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