In my JSF 1.2 webapp I have a page with a <h:commandButton>
that invokes an action method on a backing bean. This action will cause data to be removed/replaced in the database, so I want to avoid any situations where the user accidentally clicks on the command button.
I would like to implement a simple "Are you sure?" prompt with "Yes/No" or "OK/Cancel" options using JavaScript. I'm not great with JavaScript and I have never mixed JavaScript with JSF before. Can anyone provide a code snippet to show me how to implement this?
Here is the piece of my JSP page where I declare the command button:
<h:commandButton
id="commandButtonAcceptDraft"
title="#{bundle.tooltipAcceptDraft}"
action="#{controller.actionReplaceCurrentReportWithDraft}"
image="/images/checkmark.gif">
</h:commandButton>
SOLUTION:
The solution provided by BalusC worked just fine. I wanted to also mention that it is easy to use text from a resource bundle as the prompt text. On my page, I load the resource bundle with an element like this:
<f:loadBundle basename="com.jimtough.resource.LocalizationResources" var="bundle" />
The <f:loadBundle>
must be inside your <f:view>
. Then I add the code provided by BalusC to my command button element but substitute a string from my resource bundle for the 'Are you sure?' text, like this:
<h:commandButton
id="commandButtonAcceptDraft"
title="#{bundle.tooltipAcceptDraft}"
action="#{controller.actionReplaceCurrentReportWithDraft}"
image="/images/checkmark.gif"
onclick="return confirm('#{bundle.confirmationTextAcceptDraft}')">
</h:commandButton>
The line in my English resource file (just a plain text file with key/value pairs) looks like this:
# text displayed in user prompt when calling confirm()
confirmationTextAcceptDraft=This will overwrite the current report and cannot be undone. Are you sure?
Use the JavaScript confirm()
function. It returns a boolean
value. If it returns false, then the button's default action will be blocked, else it will be continued.
<h:commandButton onclick="return confirm('Are you sure?')" />
Since it already returns boolean
, there's absolutely no need to wrap it around in an if
a suggested by other answers.
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