javaScript function overloading part -1

Classical (non-js) approach to overloading:
function myFunc(){
//code
}

function myFunc(overloaded){
//other code
}
Javascript wont let more than one function be defined with the same name.
In javascript, same named functions automatically override earlier functions with the exact same name.
So, you can’t call the first one.
Try it:
function a() {alert(1);}
function a() {alert(2);}
a(); // alerts ‘2’

The first function declaration is always overwritten by the second, regardless of the condition.

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