4D v16.3
WA Back URL available
- 4D Language Reference
-
- Web Area
-
- Programmed management of Web Areas
- WA Back URL available
- WA Create URL history menu
- WA Evaluate JavaScript
- WA EXECUTE JAVASCRIPT FUNCTION
- WA Forward URL available
- WA Get current URL
- WA GET EXTERNAL LINKS FILTERS
- WA Get last filtered URL
- WA GET LAST URL ERROR
- WA Get page content
- WA Get page title
- WA GET PREFERENCE
- WA GET URL FILTERS
- WA GET URL HISTORY
- WA OPEN BACK URL
- WA OPEN FORWARD URL
- WA OPEN URL
- WA REFRESH CURRENT URL
- WA SET EXTERNAL LINKS FILTERS
- WA SET PAGE CONTENT
- WA SET PAGE TEXT LARGER
- WA SET PAGE TEXT SMALLER
- WA SET PREFERENCE
- WA SET URL FILTERS
- WA STOP LOADING URL
4D v16.3
WA Back URL available
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 | Form object |
|
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 | |||||
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.
See also
PROPERTIES
Product: 4D
Theme: Web Area
Number:
1026
HISTORY
Created: 4D v11 SQL Release 2
ARTICLE USAGE
4D Language Reference ( 4D v16)
4D Language Reference ( 4D v16.1)
4D Language Reference ( 4D v16.2)
4D Language Reference ( 4D v16.3)
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