is.js

is.js works by asking the browser a question and getting a quick boolean response to use for further processing and conditional function execution.

While not that very complex, is.js can be a crucial piece of code, since it can be used in checking various conditions before loading, executing, or modifying a page.

is.js can be used as a standalone library, or integrated with more complex pieces of code and applicaitons.

The library includes many built-in conditional checks commonly used in Web development.

Features:

• Check browser type
• Check device type
• Check OS type
• Check for object types (integer, date, number, string, email, credit card number, etc.)
• Check if string is blank
• Check for online or offline modes

What is new in this release:

• Added new validators for the Dates.
• Added isBlank for a string.

What is new in version 1.1:

• Now is.js is working for Internet Explorer 6+.
• Added is.ie6(), is.ie7(), is.ie8() and is.ie9().

Requirements:

• JavaScript enabled on client side