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Adding a callback function when JSONP data is loaded
A few months ago, I posted a question regarding how to intercept AJAX requests so my extension could work on websites like Twitter. My current implementation is OK, but I was looking at the source code of Tweetspeak to find out how rbardini added to "Speak" button to each tweet. I saw he used jQuery to run a callback function when a new batch of tweets loaded:
return $.ajax({
url: baseUri+methodName,
dataType: "jsonp",
jsonp: "oncomplete",
data: data
}).success(function(data) {
if (typeof callback === 'function') {
callback(data);
}
});
So my question is, how, in plain JS, can I make a callback function run each time JSONP data is received asynchronously?
How about making a magic function that overrides "oncomplete" (and calls the original function)? If I understand JSONP correctly, the request will return a script in the format "oncomplete({ json data goes here })", so overriding "oncomplete" should work.
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