precise-typeof

precise-typeof

Better typeof. Detects real type of the objects like Array(), new Number(1), new Boolean(true), etc.

compression	size
precise-typeof.js	2.35 kB
precise-typeof.min.js	1.41 kB
precise-typeof.min.js.gz	639 B

Install

$ npm install precise-typeof --save

Examples

var typeOf = require('precise-typeof');

typeOf({});               // -> 'object'
typeOf(new function(){}); // -> 'object'
typeOf([]);               // -> 'array'
typeOf(25);               // -> 'number'
typeOf(Infinity);         // -> 'number'
typeOf('ABC');            // -> 'string'
typeOf(function(){});     // -> 'function'
typeOf(Math.sin);         // -> 'function'
typeOf(undefined);        // -> 'undefined'
typeOf(true);             // -> 'boolean'
typeOf(null);             // -> 'null'
typeOf(NaN);              // -> 'nan'

// object values
typeOf(new Object());                           // -> 'object'
typeOf(new Array());                            // -> 'array'
typeOf(new Number(5));                          // -> 'number'
typeOf(new Number(Infinity));                   // -> 'number'
typeOf(new String('ABC'));                      // -> 'string'
typeOf(new Function('a', 'b', 'return a + b')); // -> 'function'
typeOf(new Boolean());                          // -> 'boolean'
typeOf(new Number('blabla'));                   // -> 'nan'

// special objects
typeOf(/s/);         // -> 'regexp'
typeOf(new Date());  // -> 'date'
typeOf(Math);        // -> 'math'
typeOf(new Error()); // -> 'error'
typeOf(arguments);   // -> 'arguments'

// node
typeOf(global);               // -> 'global'
typeOf(process);              // -> 'process'
typeOf(Buffer('B'));          // -> 'buffer'
typeOf(new Buffer(2));        // -> 'buffer'
typeOf(Buffer([62, 64, 66])); // -> 'buffer'

// es6
typeOf(Symbol('A')); // -> 'symbol'

// browser
typeOf(window);                                   // -> 'global'
typeOf(document);                                 // -> 'html'
typeOf(document.body);                            // -> 'html'
typeOf(document.getElementsByTagName('html')[0]); // -> 'html'
typeOf(document.getElementsByTagName('div'));     // -> 'html'
typeOf(document.createElement('a'));              // -> 'html'
typeOf(document.createTextNode('Abcd'));          // -> 'text'
typeOf(document.createComment('abcd'));           // -> 'comment'
typeOf(document.createEvent('Event'));            // -> 'event'
typeOf(document.createEvent('UIEvents'));         // -> 'event'
typeOf(document.createEvent('HTMLEvents'));       // -> 'event'
typeOf(document.createEvent('MouseEvents'));      // -> 'event'

License

Precise-TypeOf is licensed under the MIT license.