WA Back URL available
WA Back URL available ( {* ;} object ) -> Function result
| Parameter | Type | Description | |
|---|---|---|---|
| * | Operator | → | If specified, object is an object name (string) If omitted, object is a variable |
| object | any | → | Object name (if * is specified) or Variable (if * is omitted) |
| Function result | Boolean | ← | True if there is a previous URL in the sequence of URLs opened;otherwise, False |
This command is not thread-safe, it cannot be used in preemptive code.
Description
The WA Back URL available command finds out whether there is a previous URL available in the sequence of URLs opened in the Web area designated by the * and object parameters.
The command returns True if a URL exists and False otherwise. More particularly, this command can be used, in a custom interface, to enable or disable navigation buttons.