When I run this JavaScript code in Chrome versus Firefox, I am noticing some differences in behavior:
var outer = function (param) {
var inner = function (theinput) {
return theinput * 2;
};
return 'The result is ' + inner(param);
};
console.log(outer(2));
console.log(inner(5));
Result on Firefox:
"The result is 4"
10
Result on Chrome:
"The result is 4"
undefined
It seems that because `inner` is declared with "var", it acts as a private function in Chrome. This is why the output shows as undefined when trying to access `inner` outside of its scope in Chrome. However, in Firefox, it appears to be treated differently, displaying the value of `inner` even when accessed externally.
If I were to remove the `var` declaration for `inner`, my understanding is that it would promote `inner` to a global function after its first execution. This would mean that my initial assumption about Chrome's behavior being correct due to the `var` keyword may not be entirely accurate.