ParsleyJS远程验证器如何真正验证它？

I'm having an issue which I'm dealing with for several hours and I can't figure it out how to access a value in php and return back to js.

This is my input field:

<input type="text" class="form-control input-lg" name="nr_ref" id="nr-ref"
     placeholder="Ref"
     data-parsley-group="step1"
     data-parsley-trigger="change"
     data-parsley-remote="validateit.php"
     data-parsley-remote-options='{ "type": "POST", "dataType": "jsonp", "data": { "token": "value" } }'
     required>

My validateit.php is actually empty ;S

How to access the value of the input, so I can process it in my php file, and then return true / false displaying adequate message below the input element?

I'm loading both parsley-remote.min.js and parsley.min.js.

By default, Parsley in your above configuration would pass through POST method the variable nr_ref with the field value inside.

Basically, in your validateit.php, if you make

<?php
die(var_dump($_POST));

then you should see this variable and its value passed by parsley to your script (in $_POST['nr_ref']).

Feel free than to make your server-side checks and then return a 200 HTTP status code (with header()) if successful or 4xx either.

Hope that helped you.

Best