Evaluates a string value to determine whether the variable
named in it exists.
Lucee Function Reference
Function ISDEFINED
This Function is deprecated
Example
isdefined(string variable):boolean
Category
decision
Arguments
The arguments for this function are set. You can not use other arguments except the following ones.
| Name | Type | Required | Description |
|---|---|---|---|
| variable | string | Yes | String, enclosed in quotation marks. Name of variable to test for. |