Ajax Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource

Newbie picture Newbie · May 30, 2014 · Viewed 277.9k times · Source

I'm writing a simple site that takes as input an idiom, and return its meaning(s) and example(s) from Oxford Dictionary. Here's my idea:

I send a request to the following URL:

http://www.oxfordlearnersdictionaries.com/search/english/direct/?q=[idiom]

For example, if the idiom is “not go far”, I'll send a request to:

http://www.oxfordlearnersdictionaries.com/search/english/direct/?q=not+go+far

And I'll be redirected to the following page:

http://www.oxfordlearnersdictionaries.com/definition/english/far_1#far_1__192

On this page, I can extract the meaning(s) and the example(s) of the idiom.
Here's my code for testing. It will alert the response URL:

<input id="idiom" type="text" name="" value="" placeholder="Enter your idiom here">
<br>
<button id="submit" type="">Submit</button>
<script type="text/javascript">
$(document).ready(function(){
    $("#submit").bind('click',function(){
        var idiom=$("#idiom").val();
        $.ajax({
            type: "GET",
            url: 'http://www.oxfordlearnersdictionaries.com/search/english/direct/',
            data:{q:idiom},
            async:true,
            crossDomain:true,
            success: function(data, status, xhr) {
                alert(xhr.getResponseHeader('Location'));
            }
        });
        
    });
});
</script>

The problem is I've got an error:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://www.oxfordlearnersdictionaries.com/search/english/direct/?q=by+far. This can be fixed by moving the resource to the same domain or enabling CORS.

Can anybody tell me how to resolve this please?
Another approach is fine too.

Answer

G.F. picture G.F. · Mar 13, 2015

JSONP or "JSON with padding" is a communication technique used in JavaScript programs running in web browsers to request data from a server in a different domain, something prohibited by typical web browsers because of the same-origin policy. JSONP takes advantage of the fact that browsers do not enforce the same-origin policy on script tags. Note that for JSONP to work, a server must know how to reply with JSONP-formatted results. JSONP does not work with JSON-formatted results.

http://en.wikipedia.org/wiki/JSONP

Good answer on stackoverflow: jQuery AJAX cross domain

   $.ajax({
        type: "GET",
        url: 'http://www.oxfordlearnersdictionaries.com/search/english/direct/',
        data:{q:idiom},
        async:true,
        dataType : 'jsonp',   //you may use jsonp for cross origin request
        crossDomain:true,
        success: function(data, status, xhr) {
            alert(xhr.getResponseHeader('Location'));
        }
    });