How do I add in a specific value type for jsonp?

Question

So my script right now is:

$(document).ready(function() {
  $("#submit").bind('click', function() {
    var username = $("#username").val();
    $.ajax({
      type: "GET",
      url: 'http://www.roblox.com/UserCheck/DoesUsernameExist?username=' + username,
      data: {
        q: username
      },
      async: true,
      dataType: 'jsonp', //you may use jsonp for cross origin request
      crossDomain: true,
      success: function(data, status, xhr) {
        alert(xhr.getResponseHeader('Location'));
      }
    });

  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="username" type="text" name="" value="" placeholder="Enter your idiom here">
<br>
<button id="submit" type="">Submit</button>

How do I make it so I can make this script work with the +username? I need help on fixing this, this isn't my original code but I am just tinkering with it. I am new to stuff like JS, JSON, etc.

Is expected result to set `username` at `input` element `change` https://developer.mozilla.org/en-US/docs/Web/Events/change event ? — guest271314, Nov 06 '15 at 00:09
As far as I can tell, the Roblox API doesn't implement JSONP. — Barmar, Nov 06 '15 at 00:15
when i tried another script, it wasn't with jsonp and it hard a CORS error. I looked up on how I can fix it and it said use jsonp with cross domain. Also go to the link 'http://www.roblox.com/UserCheck/DoesUsernameExist?username=Shedletsky ' that's json right? and also how is json different from jsonp — Dominus Dominius, Nov 06 '15 at 00:17
http://stackoverflow.com/questions/2887209/what-are-the-differences-between-json-and-jsonp?s=1|4.6480 — Barmar, Nov 06 '15 at 00:21
JSONP only works if the API supports it. Since this API doesn't, you need to write a script on your own server that calls the API. — Barmar, Nov 06 '15 at 00:22
@Barmar also when i run the code it has an error stating "SyntaxError: missing ; before statement" — Dominus Dominius, Nov 06 '15 at 00:30
The way that JSONP works is that the it creates ``. The server is supposed to return a script that contains `;func(jsonobject);`. If it just returns the JSON object, that's not a valid script, and you get an error. — Barmar, Nov 06 '15 at 00:33
@Barmar ohhh i understand. :/ i'll just give up on this project because i do not know what i am doing :| — Dominus Dominius, Nov 06 '15 at 00:37

How do I add in a specific value type for jsonp?

0 Answers0