How to verify the existence of a YouTube video ID using JavaScript

In this code snippet, I am using the video ID 'TOwd30wXc-0' from YouTube:

$.ajax({
        url: "http://gdata.youtube.com/feeds/api/videos/"+realurl+"?v=2&alt=json-in-script",
        dataType: "jsonp",
        contentType: "application/json; charset=utf-8",
        success: function (data) { PreviewVideo(data) }
    });

The function PreviewVideo(data) is responsible for parsing the JSON response and performing other operations.

One issue I encountered is that when an incorrect video ID is provided, there is no indication of it. I tried adding 

error: function() { alert('error occurred') }
to $.ajax but it did not work as expected.

Is there a method to determine whether the video ID is valid or not? Ideally, if the video exists, call PreviewVideo(data), otherwise call VideoError().

EDIT: When I input an invalid ID, I receive the following message in the JavaScript console (Chrome):

GET http://gdata.youtube.com/feeds/api/videos/TOwd30wXc-?v=2&alt=json-in-script&callback=jQuery17205096300751902163_1353530502856&_=1353530692237 400 (Bad Request)

Your insights and solutions are appreciated.

javascriptajaxapiyoutuberesponse

Answer №1

As noted on the jQuery forums, it is stated that handling bad requests cannot be caught successfully. The statusCode or error parameters are not effective in this scenario, as the function is meant to call a pre-determined function upon success.

There exists a workaround using the deferred object interface, demonstrated in this example (Shared by Kevin B on the jQuery forums)

I stand corrected, as it seems that utilizing a timeout is the most efficient solution based on the information shared in a particular response and a previous discussion on another Stack Overflow question.

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