What is Global API?

Global API provides you global functions to perform common JavaScript tasks such as comparing objects, deep copying, iterating through objects, and converting JSON data etc. All global functions can be accessed by using the angular object. The list of global functions is given below:

Name	Description
angular.lowercase	Converts the specified string to lowercase.
angular.uppercase	Converts the specified string to uppercase.
angular.forEach	Invokes the iterator function once for each item in obj collection, which can be
	either an object or an array.
angular.isUndefined	Determines if a reference is undefined.
angular.isDefined	Determines if a reference is defined.
angular.isObject	Determines if a reference is an Object.