boolean()

Netscape and XSLT

boolean()

The boolean() function converts its argument to a boolean value. Any value can be converted to a boolean using the following rules:

Datatype

Conversion Rules

Number

Zero, negative zero, and NaN convert to false. Everything else converts to true.

String

Length greater than 0 converts to true. Otherwise false.

Boolean

Value is unchanged.

Node-set

Empty converts to false. Anything else is true.

Syntax:
boolean boolean(value) 
Arguments:

A value of any XSLT/XPath supported datatype.

Result:

A boolean.

Defined: XPath, section 4.3

NS support: Supported.

Datatype	Conversion Rules
Number	Zero, negative zero, and NaN convert to false. Everything else converts to true.
String	Length greater than 0 converts to true. Otherwise false.
Boolean	Value is unchanged.
Node-set	Empty converts to false. Anything else is true.

Comments? devdoc-feedback@netscape.com

A–+R

Netscape DevEdge

Search