Question

If I have the following:

function hello(name, callback) {
var hello1 = "Hello There " + name;
callback(hello1);
}

hello("John", function(hello1) {
    alert(hello1);
});

I can get “Hello There John” in an alert box. How do I make it such that I can have a hello2 variable so that there are two variables in the callback? I essentially want to do something like:

function hello(name, callback) {
var hello1 = "Hello There " + name;
var hello2 = "Greetings " + name;
callback(hello1, hello2);
}

hello("John", function(hello1, hello2) {
    alert(hello1 + " " + hello2);
});

Answer 1

if you got only strings values, the best will be create a array:

var someArray = new Array();

then in the function you can put the values in the array:

someArray[someArray.length]= "HELLO USER WITH NAME: " + name;
someArray[someArray.length]= "HELLO USER WITH NAME: " + name2;

and after that return the array:

callback(someArray); // or maybe will be better?: return someArray;

and in the callback function you can get the values with:

function callback(var retArray){
for(int i=0,i<retArray.length,i++){
console.log(retArray[i]); }

or you can put make your own object (function) with some strings inside..and then return this function..But if you have only string values, better will be the Array.