Spaces:
Runtime error
Runtime error
var baseGetTag = require('./_baseGetTag'), | |
isObjectLike = require('./isObjectLike'); | |
/** `Object#toString` result references. */ | |
var numberTag = '[object Number]'; | |
/** | |
* Checks if `value` is classified as a `Number` primitive or object. | |
* | |
* **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are | |
* classified as numbers, use the `_.isFinite` method. | |
* | |
* @static | |
* @memberOf _ | |
* @since 0.1.0 | |
* @category Lang | |
* @param {*} value The value to check. | |
* @returns {boolean} Returns `true` if `value` is a number, else `false`. | |
* @example | |
* | |
* _.isNumber(3); | |
* // => true | |
* | |
* _.isNumber(Number.MIN_VALUE); | |
* // => true | |
* | |
* _.isNumber(Infinity); | |
* // => true | |
* | |
* _.isNumber('3'); | |
* // => false | |
*/ | |
function isNumber(value) { | |
return typeof value == 'number' || | |
(isObjectLike(value) && baseGetTag(value) == numberTag); | |
} | |
module.exports = isNumber; | |