In Javascript, "Everything is (or acts like) an Object" We need to write "typeis.js" due to a problem (type check) arised other than except the conveniences it is a providing to us.
| Value | Native | Typeis.js |
|---|---|---|
| Undeclared variables | undefined | --- |
| undefined | undefined | --- |
| null | object | --- |
| Booleans | boolean | Boolean |
| Numbers | number | Number |
| String | string | String |
| Functions | function | Function |
| Array | object | Array |
| Object | object | Object |
| Date | object | Date |
| RegExp | object | RegExp |
Everything in JavaScript acts like an object, with the only two exceptions being null and undefined. *JavaScript Garden Typeis.js acts like an property; doesn't work null and undefined types because they doesn't have properties.
npm install typeis bower install typeis
In Node.js:
require('typeis');
In a browser:
<script src="typeis.js"></script>
variable.typeis(); // return Array, Object, RegExp, Date etc.
Multi type validation
typeis(variable, ['array', 'object']); // if variable is Array or Object return true otherwise false
Type valition with regex
typeis(variable, 'array|object'); // if variable is Array or object return true otherwise false typeis(variable, '.+[yep]$'); // if variable type end of "y", "e" and "p" like Array, Date, RegExp return true otherwise false typeis(variable, '(^(?!array|object).+)[^n]$'); // if variable is Array, Object or ending "n" like Function and Boolean return false otherwise true
function realWorld( options ){ if(typeis(options, 'object')){ //do something } else { //do another something } }
IE9 and below also support all modern browser.
Property usage warning
Update readme
Multi type validation support
variable.typeis(['array', 'object']); // if variable is Array or Object return true otherwise false
type validation with regex support
variable.typeis('array|object'); // if variable is Array or object return true otherwise false
Typeis.js Released