Create a custom callback in JavaScript

Question

All I need to do is to execute a callback function when my current function execution ends.

function LoadData() 
{
    alert(\'The data has been loaded\');
          


        

Answer 1

   function callback(e){
      return e;
   }
    var MyClass = {
       method: function(args, callback){
          console.log(args);
          if(typeof callback == "function")
          callback();
       }    
    }

==============================================

MyClass.method("hello",function(){
    console.log("world !");
});

==============================================

Result is:

hello world !