Answers for "how to call self function in javascript"

self invoked function javascript

(function(){
    //Bunch of code...
})();

why do we use self invoking functions in javascript

(function(){
  
	// your code here
  
  	/* self invoking functions are used to avoid any name scope collision
    of variables and functions, specially when you have a huge code in your 
    file and you also need to add a third party library. Because there is 
    a high chance of repeating names of variables and functions.
    
    Using these functions help solve this problem and names can be used 
    again and again. Also, this way there is very little clutter in the code
    and its easily understandable.
    
    you alos do not need to call this function in order to make your code work,
    it runs automatically.
 
 	*/
  
})();

call a self executing function javascript

var foo = (function bar() {
   alert('hello');
   return bar;
})();   // hello

foo();  // hello