foop
Version:
interfaces that describe their intentions.
35 lines (34 loc) • 1.14 kB
JavaScript
/**
* @desc remainder / 1 is 0
* @since 5.0.00beta.6
* @memberOf is
*
* @param {number | string | *} x value to check
* @return {boolean} x hasDecimals
*
* @func
* @name hasDecimals
* @alias isDecimalNumberish
*
* @TODO could ensure decimalNumber or isString first? (safety plus decision tree)
*
* {@link https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Remainder_() mozilla-arithmetic-operators-remainder}
* {@link https://stackoverflow.com/questions/3803331/how-can-i-modulo-when-my-numbers-start-from-1-not-zero stack-overflow-modulo-start-from-zero}
* @see {@link mozilla-arithmetic-operators-remainder}
* @see {@link stack-overflow-modulo-start-from-zero}
* @see is/validIndex
*
* @example
*
* hasDecimals(1) //=> false
* hasDecimals(Number(1)) //=> false
* hasDecimals(NaN) //=> false
* hasDecimals(new Number(1)) //=> false
* hasDecimals('') //=> false
* hasDecimals('100') //=> false
*
* hasDecimals('100.10') //=> true
* hasDecimals(100.1) //=> true
*
*/
module.exports = x => x % 1 === 0