Handle multiple response in javascript

The problem here is that you don't know which request respond because you didn't isolate your context. Let's explain:

var requestUrl=[url1,url2,url3,url4,url5];
for(var i=0;i<requestUrl.length;i++){
    // Here you're making an async call to a URL
    $http.get(requestUrl[i]).success(response){
        // When the response arive, i=4, it appends after the loop is over
        console.log(response);
    };
}

To avoid this,there are 2 good practices:

-> Changing your loop to a "forEach'

var requestUrl=[url1,url2,url3,url4,url5];
requestUrl.forEach(function(url) {
    $http.get(url).success(response){
        console.log(url '+' response);
    };
}

-> Keep a for loop but use a closure to keep the index, or the URL

var requestUrl=[url1,url2,url3,url4,url5];
for(var i=0;i<requestUrl.length;i++){
     // Here you can keep "i" in "index"
    (function(index) {
        $http.get(requestUrl[i]).success(response){
            console.log(requestUrl[index] + response);
        };
    })(i);
}

If you do:

$http.get('/someUrl').
  success(function(data, status, headers, config) {
    // this callback will be called asynchronously
    // when the response is available
  }).
  error(function(data, status, headers, config) {
    // called asynchronously if an error occurs
    // or server returns response with an error status.
  });

From the headers you can get the Host HTTP header and compare based off of that.

You can deal with your specific problem a number of ways, but it's unlikely to do what you're probably trying to do at a higher level. That said...

You have an array of URLs to fetch. You could store your responses in an array too, and then you'll know which is which:

var requestUrl = [url1,url2,url3,url4,url5];
var responses = [];

for (var i = 0; i < requestUrl.length; i++){
    responses[i] = null;

    $http.get(requestUrl[i]).success(function (response) {
        responses[i] = response;
    });
}

Of course you'll have to find a way to tie into the final .success() call to do your console.log() (or whatever you're doing next).