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JSF Command button refreshes the page whenever its pressed

I have a simple jsf form with a button that is supposed to trigger a method call on the backing bean
<h:form id="form">
<h:commandButton id="button" value="Submit" action="#{controller.submit}"
onComplete="promptSuccess('Changes submitted successfully')" />
</h:form>
Everytime I press that button, the page refreshes and the JavaScript function 'promptSuccess' never even gets called.
I would like the form to be updated and also the success function be called as soon as the changes have been submitted. But the whole page gets refreshed.
I did see a few examples on SO but none of them proved useful to my particular problem/situation.
I would really appreciate some help on this.
Examples referred to:
Example_1
Example_2

My event ajax keydown is too slow

I have a problem with a h:inputText and i don't know how to solve it.
I'm working on a xhtml page using JSF and RichFaces which contains fields as Calendar, SelectOneMenu, InputTextArea, Input. At the end of my form, there are two buttons Print and Save.
If one of the fields is modified (text, date, etc), i have to disable the Print button. In every field, i have add ajax event.
For example :
<rich:calendar datePattern="dd/MM/yyyy" timeZone="#{timeZone.timeZone}" value="#{myBean.date}">
<f:ajax event="change" listener="#{myBean.verifyModification}" render="myForm"/>
</rich:calendar>
If my date is changed, i call a method stored in my bean and it's ok.
But, i have a problem with my inputText and inputTextArea.
<h:inputText value="#{myBean.name}" maxlength="50">
<a4j:ajax event="keydown" render="myForm" listener="#{myBean.verifyName}" />
</h:inputText>
If i write fastly, for example i stay on the letter a to write aaaaaaaa in my field. The field will contain aaaaaaaa then aaaa. Is it because the ajax event is too slow? The problem doesn't come from my bean method because i only test a value.
Because of that, i can't test this field. I have tried the others events like blur, change. If i use these events, i have to click out of my field then my button is refresh.
Could you help me, please?
Thank you.

The problem is most likely that you render your complete form, not only the part of it that needs updating. JSF will then replace your form with the values you submitted on the first ajax request. Try:
<h:inputText value="#{bean.name}">
<f:ajax event="keydown" render="myButtonP" listener="#{bean.verifyName}" />
</h:inputText>
<h:panelGroup id="myButtonP">
<h:commandButton id="printBtn" value="Print" action="#{bean.printMe}"
disabled="#{bean.canPrint}" />
<h:commandButton id="saveBtn" value="Save" action="#{bean.save}" />
</h:panelGroup>
If you use disabled instead of rendered on the button, you can even reference printBtn directly in the render attribute.

How do I conditionally display a Javascript alert() that blocks the page from submitting until the user clicks "OK"?

I have a commandButton like this:
<p:commandButton value="Save" actionListener="#{bean.checkDetails}" action="#{bean.save}" />
My checkDetails() method checks some fields on the page and if they are not filled in, uses RequestContext to trigger a Javascript alert() which I want to use to block bean.save from being called until the user clicks "OK". The RequestContext piece looks like this:
RequestContext context = RequestContext.getCurrentInstance();
context.execute("alert('Details are not Complete.')");
My problem is I am not seeing the alert() dialog and bean.save is being called regardless of the state of the checkDetails() method.
Am I going about this completely the wrong way? I have spent three hours on this so far and I am plain stuck. If I remove the action method, the alert() pops up just fine.
Please, any input would be greatly appreciated.

My checkDetails() method checks some fields on the page and if they are not filled in...
As BalusC said, this can very easily be solved by adding required="true" to those fields, no need to write Java for this.
If you want to mix this up with the 'old-scool' alert() you can use the validationFailed callback parameter:
<h:form>
<p:inputText required="true" />
<p:commandButton value="submit" oncomplete="handleValidation(xhr, status, args)" />
</h:form>
<script type="text/javascript">
function handleValidation(xhr, status, args)
{
if(args.validationFailed)
{
alert('Details are not Complete.');
}
}
</script>

Ajax + JSF 2 times clicking after the first click

I have a dataTable with a column named DELETE (it is a link) which has an listener . When I click it the first time (click 1) it deletes the row (as expected), but when I try it with another row after that nothing happened (click 2). In fact wherever I click next nothing happen. I should click another time (click 3) to get it work. I don't want that.
Attention: The "delete()" method in my_user is not reached after "click 2".
Here is the code for the column:
<h:column>
<f:facet name="header">#{lng.del}</f:facet>
<h:form>
<h:commandLink action="#">
<f:ajax event="click" listener="#{my_user.delete}" render="#all" />
<h:graphicImage name="delete.png" library="images" styleClass="tableIcon" />
</h:commandLink>
</h:form>
</h:column>

You've multiple forms inside the table. When you re-render another form from inside a form by ajax, then its view state will get lost and hence the 1st click will fail. This click however takes care that the form gets the view state back, so the 2nd click works.
Technically you need to re-render only the content of the other form, but this isn't possible in this particular use case. Better put the <h:form> outside the <h:dataTable> so that you have a single form with a shared view state.
<h:form>
<h:dataTable>
...
</h:dataTable>
</h:form>
If your page contains another forms as well, I'd suggest to render only the current form instead of all, otherwise any actions on those forms will fail as well.
<f:ajax event="click" listener="#{my_user.delete}" render="#form" />

JSF / RichFaces commandButton called by JavaScript does not redirect

I have a javascript function to run h: or a4j: commanButton. When javascript function is called, action button runs action but after that page is not redirected.
I am using Seam 2.2 and RichFaces 3.3.3
What is the problem here? Thanks.
function submitForm(){
document.getElementById('myForm:save').click();
// does not redirect.
//document.getElementById('myForm').submit();
}
Even if I use submit() page is not redirected.
Form:
<h:form id="myForm">
//some fields
<h:commandButton id="save" value="Save"
action="#{personHome.persist}" />
</h:form>

To the point, the following should work for <h:commandButton>:
document.getElementById('myForm:save').click();
and when the button is the first button of the form in question:
document.getElementById('myForm').submit();
You only need to ensure that the generated client ID is exactly the same as the ID which you're specifying in getElementById(). If the <h:form> is by itself nested in another UINamingContainer component, then the ID will be prepended with its ID. Rightclick page in browser and View Source to be sure.
As to the concrete problem, perhaps you've attached this function to another button which in turn also submits some form by itself which will result in a race condition of two requests. You should then return false; from or after the function to block the caller's default action. E.g.
<h:commandButton onclick="return submitForm();" />
with
function submitForm(){
// ...
return false;
}