self calling function javascript code example

Example 1: self invoked function javascript

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

Example 2: self invoking function javascript es6

(() => {
  console.log('Ok');
})()

Example 3: self calling function

(function(){
	console.log(Math.PI);
})();

Example 4: call a self executing function javascript

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

foo();  // hello