Question

My Problem

I am trying to load JSON encoded data from a remote site using jQuery, however when jQuery tries to call this URL it appends the correct function to callback=? so it’s something like callback=jsonp1256856769 but it also adds _=1256856769 to the url. So the url ends up being something like http://www.example.com/link/to/file.php?format=json&lang=en&callback=jsonp1256856769&_=1256856769

Now the problem is that that file that I am using that calls it can’t interpret the _=1234234 and I can’t change it so I have to fix the jQuery problems

My Question

How can I get jQuery to not appened that _= to the URL that it calls

What I have done to try to figure out my problem

• Removed all other javascript libraries from the page
• Tried several different versions of jQuery

My Code

function getData(){
    url = "http://www.example.com/link/to/file.php";
    url += "?format=json&lang=en";
    $.getJSON(url+"&callback=?",function(data){formatData(data);});
}

*Above is the snippet of JavaScript that I am currently using

*Note the domain I am using is not example.com

Answer 1

UPDATE: added code

The _= part is there, because JSONP request are cache: false by default. You can set cache: true, which will make the _= part go away, but the browser will cache the requests.

function getData() {
    url = "http://www.example.com/link/to/file.php";
    url += "?format=json&lang=en";
    $.ajax({
        'url': url,
        'type': 'GET',
        'dataType': 'jsonp', // this adds &callback=? by design
        'cache': true,
        'success': function(data) { formatData(data); }
    });
}