mirror of
https://github.com/josdejong/mathjs.git
synced 2025-12-08 19:46:04 +00:00
28 lines
691 B
JavaScript
28 lines
691 B
JavaScript
'use strict';
|
|
|
|
/**
|
|
* Determine the type of a variable
|
|
*
|
|
* type(x)
|
|
*
|
|
* @param {*} x
|
|
* @return {String} type Lower case type, for example 'number', 'string',
|
|
* 'array', 'date'.
|
|
*/
|
|
exports.type = function(x) {
|
|
var type = typeof x;
|
|
|
|
if (type === 'object') {
|
|
if (x === null) return 'null';
|
|
if (x instanceof Boolean) return 'boolean';
|
|
if (x instanceof Number) return 'number';
|
|
if (x instanceof String) return 'string';
|
|
if (Array.isArray(x)) return 'array';
|
|
if (x instanceof Date) return 'date';
|
|
if (x instanceof Function)return 'function';
|
|
if (x instanceof RegExp) return 'regexp';
|
|
}
|
|
|
|
return type;
|
|
};
|