Name
boolean( )
Synopsis
boolean
boolean(object o
)
The boolean()
function converts its argument to a Boolean
according to these rules:
Zero and NaN are false. All other numbers are true.
Empty node-sets are false. Nonempty node-sets are true.
Empty strings are false. Nonempty strings are true.
Get XML in a Nutshell, 3rd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.