defined
defined
defined(node);
Returns 1 if the given node evaluates to a "defined" value (that is to something that is non-null, non-undefined and non-NaN). Returns 0 otherwise.
defineddefined(node);
Returns 1 if the given node evaluates to a "defined" value (that is to something that is non-null, non-undefined and non-NaN). Returns 0 otherwise.