javascript - How do I check that a number is float or integer? -

how find number float or integer?

1.25 --> float   1 --> integer   0 --> integer   0.25 --> float

check remainder when dividing 1:

function isint(n) {    return n % 1 === 0; }

if don't know argument number need 2 tests:

function isint(n){     return number(n) === n && n % 1 === 0; }  function isfloat(n){     return number(n) === n && n % 1 !== 0; }

ERT