Javascript is empty function

Common-isEmpty.js

// Current value is empty
this.isEmpty = function(value){
	return value == null // NULL value
        || value == undefined // undefined
        || value == 'undefined' // undefined
        || value.length == 0 // Array is empty
        || value == '00000000-0000-0000-0000-000000000000' // Guid empty
	|| ((value instanceof Date && !isNaN(value.valueOf())) // Validate DateTime value and check min-max value
		&& ((value <= new Date(1753, 01, 01)) // SQL DateTime minimum value
		|| (value >= new Date(9999, 12, 31, 23, 59, 59, 999))) // SQL DateTime maximum value
	);
}