Sidebar
reference:evaluator:isset
IsSet(
var:name,
[var:name...]
)
→ bool
Arguments
name
Name of variable to test for.name...
Optional. Additional variable names...Return value
True if all specified variables exist.Description
Returns True if all specified variables exist (within the context of this evaluation). Returns False if any do not exist.
Example:
if (IsSet("j")) { ... } // does a variable called "j" exist?
if (IsSet("name", "ext")) { ... } // do variables called "name" and "ext" both exist?
See also: Val