Marcus Junius Brutus Marcus Junius Brutus - 1 month ago 8
Javascript Question

assert that an object is an integer number

Using should.js, I am currently doing:

ordinal.should.be.a.Number().and.equal(Math.floor(ordinal));


… is there a more concise way to require that a given object be an integer?

Answer

You can use Number.isSafeInteger (to test for 64-bit integers) and Number.isInteger. To use with Should.js:

should.ok(Number.isSafeInteger(ordinal));

I generally recommend using Number.isSafeInteger...unless you know you're dealling with potentially really large integer values that have to be stored as floating-point.