You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
886 B
39 lines
886 B
4 years ago
|
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;
|