Quick parseint question

[DanCouper]

This is one of the solutions right? Someone has tried to be clever, basically. parseInt on a number will still try to parse the integer value from it. That part of the solution is saying “the nimber minus the integer part of the number == zero”, so 3.14 would be false, 3 would be true.

A much, much clearer version is n % 1 == 0 - if a number divides evenly by 1, it is by definition an integer.

Write Higher Order Arrow Functions - Purpose of parseInt?

I feel like this is a bit of cargo cult programming copied from somewhere (someone trying to write a frac [exact opposite of floor] function) - there’s literally no difference in output between that and the much clearer n % 1 == 0 // This works fine: function isInt(n) { return n % 1 === 0; } // This should return the decimal part of a number; // kinda fails most of the time because floating point: function badFrac(n) { return n % 1; } // This returns exactly the same thing and fails // …