I need to issue multiple $.get requests, process their responses, and record the results of the processing in the same array. The code looks like this:
$.get("http://mysite1", function(response){
results[x1] = y1;
}
$.get("http://mysite2", function(response){
results[x2] = y2;
}
// rest of the code, e.g., print results
Is there anyway to ensure that all the success functions have completed, before I proceed to the rest of my code?
There is a very elegant solution: the jQuery Deferred object. $.get returns a jqXHR object that implements the Deferred interface - those objects can be combined like this:
var d1 = $.get(...);
var d2 = $.get(...);
$.when(d1, d2).done(function() {
// ...do stuff...
});
Read more at http://api.jquery.com/category/deferred-object/ and http://api.jquery.com/jQuery.when/
$.when lets you combine multiple Deferreds (which is what $.ajax returns).
$.when( $.get(1), $.get(2) ).done(function(results1, results2) {
// results1 and results2 will be an array of arguments that would have been
// passed to the normal $.get callback
}).fail(function() {
// will be called if one (or both) requests fail. If a request does fail,
// the `done` callback will *not* be called even if one request succeeds.
});
