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