Question on javascript Confirm Button for jsf or icefaces equivalent

[john smiths]

Hi All:

I am currently using Icefaces 1.82, jsf 1.1 and weblogic 10.3.2.
In javascript, there is the confirm function where the user can choose "OK" OR "cANCEL". Is there something similar in Icefaces or Jsf?


Example of Javascript confirm function:\
confirm(" The number exists go to booking!")

Any hint or help would be greatly appreciated it.

[Louis Bros]

Hi,

The <h:commandButton/> has the 'onclick' attribute you could use for this.

Something like:

<p:commandButton ... onclick="confirm('Confirm?')"/>

Ta

[Tim Holloway]

More correctly:

<p:commandButton ... onclick="return confirm('Confirm?')"/>

Without the "return" directive, the confirmation's return value may not get passed on to the control.

[Louis Bros]

Thanks Tim, I usually use the 'return' but wasn't sure of it's purpose since it seemed to work the same without. Now I know, cheers

[Tim Holloway]

Louis Bros wrote:Thanks Tim, I usually use the 'return' but wasn't sure of it's purpose since it seemed to work the same without. Now I know, cheers

There may be some browsers where it's essential and some where it's optional, but it never hurts. A more important reason is that JSF rendering into HTML may add additional "invisible" JavaScript before and/or after the attribute value. Placing the "return" there ensures that the following code won't be executed and possibly override application-programmer JavaScript.

In fact, it's probably even better to code it this way:

<p:commandButton ... onclick="if (! confirm('Confirm?')) { return false;}"/>  

That would ensure that any pre-submit generated JavaScript would only be bypassed if the submit process was aborted. When in doubt, though, check the manual (assuming it bothers to say one way or the other) and check the generated HTML.