Parallel Ajax Calls in Javascript/jQuery

Question

I am completely new to Javascript/jquery world and need some help. Right now, I am writing one html page where I have to make 5 different Ajax calls to get the data to plot grap

Answer 1

Using jQuery.when (deferreds):

$.when( $.ajax("/req1"), $.ajax("/req2"), $.ajax("/req3") ).then(function(resp1, resp2, resp3){ 
    // plot graph using data from resp1, resp2 & resp3 
});

callback function only called when all 3 ajax calls are completed.