Type-conversion adheres to the following rules : Type Conversion « Number Data Type « JavaScript Tutorial

true is converted to the number 1 before being compared.

false is converted to 0 before being compared.

If either of the operands are NaN, the equality operator returns false.

null and undefined are equal.

null and undefined are not equal to 0 (zero), "" , or false.

If a string and a number are compared, attempt to convert the string to a number and then check for equality.

If an object and a string are compared, attempt to convert the object to a string and then check for equality.

If an object and a number are compared, attempt to convert the object to a number and then check for equality.

If both operands of an equality operation are objects, the addresses of the two objects are checked for equality.

Quote from:

Pure JavaScript (Paperback)

by R. Allen Wyke (Author), Jason Gilliam (Author), Charlton Ting (Author)

# Paperback: 1448 pages

# Publisher: Sams; 1st edition (August 1999)

# Language: English

# ISBN-10: 0672315475

# ISBN-13: 978-0672315473

5.8.Type Conversion
	5.8.1.	Type Conversion
	5.8.2.	Type-conversion adheres to the following rules
	5.8.3.	Converting to a String
	5.8.4.	Using Number's toString() method in radix mode
	5.8.5.	Converting to a Number
	5.8.6.	parseInt() method
	5.8.7.	parseInt() in radix mode
	5.8.8.	If decimal numbers contain a leading zero, it's always best to specify the radix as 10 so that you won't accidentally end up with an octal value.
	5.8.9.	parseFloat() method
	5.8.10.	Type Casting
	5.8.11.	Casting to Boolean value
	5.8.12.	Casting to Number
	5.8.13.	Casting type to string
	5.8.14.	parseInt("33.00")
	5.8.15.	parseFloat("1.23e-2")
	5.8.16.	parseFloat("1.45inch")