how to know which method is calling other method in javascript

Question

consider i have many methods in jscript.. method1()

method2()

method3()

Now method1() and method2() are independent. where method3() is called by both the methods. I want to know from which method method3() is getting called. either method1() or method2()

Answer 1

Here it is simple code

function method1(){
  method3('method1');
}

function method2(){
  method3('method2');
}

function method3(method){
  alert(method);
}

Reference