I have some questions regarding how function in javascript works.
Case 1:
function myFunction(){
var _instance = this;
_instance.show = function() {
return "hi";
}
return function(){ return "hello"; };
}
var t2 = new myFunction();
alert(t2()); //this will show hello
alert(t2.show()); //this will cause error t2.show is not a function
Case 2:
function myFunction(){
var _instance = this;
_instance.show = function() {
return "hi";
}
return 5;
}
var t2 = new myFunction();
alert(t2.show()); //this will show hi
alert(t2());//this will cause error t2 is not a function
In case 1, I understand that it returned anonymous function. That's why I can call t2(), but not t2.show
In case 2, I expected it to return a number 5, but it returned an instance of myFunction. That's why I can call t2.show(), but not t2().
That's strange. Could any please explain why it behaved like that?
Thanks.
