gistfile1.js

var state = {
	one: false,
	two: false
};

// Task
var parallelTaskHandler = function(){
	// Check for success
	if (state.one && state.two) {
		// Callback
		function(){
		//do
		//deal with task
		}
	}
};


// First
request({
	success: function(data) {
		state.one = data;
		parallelTaskHandler();
	}
   
});

// Second
request({   
	success: function(data) {
		state.two = data;
		parallelTaskHandler();
	}   
});