parallel http

parallel_http.js

var ParallelHttp = {
    forkjoin: function(requests, join_handler){
        var results = [];
        var identity = function(i){return i};
        $.map(requests, function(request){
            var old_success = request.success || function(){};
            var old_error = request.error || function(){};
            var old_complete = request.complete || function(){};
            request.success = function(data) {
                old_success(data);
                results.push(true);
            }
            request.error = function() {
                old_error();
                results.push(false);
            }
            request.complete = function(){
                old_complete();
                var all_completed = (results.length == requests.length);
                if(all_completed){
                    var all_succeeded = results.every(identity);
                    join_handler(all_succeeded);
                }
            }
            $.ajax(request);
        });
    },
}