Drop Down and confirm problems

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Javascript

PHP

jQuery

Hi there,

I'm currently building some forms and would require some help from you guys as I don't know what to do more ;/.

So:

1. I've tried working with the confirm dialogue box. I am using jformer, a form framework which is quite nice though documentation is lacking information. The form is completely built using classes and functions.

There is the following function on submission.

function onSubmit($formValues) 
{
$formValues = $formValues->registrationPage->registrationSection1;
							
							$studentID = $formValues->studentid;

etc...
}

Is there a way to insert a javascript confirm on submition is pressed? So that I have a confirmation dialogue and according to which the user pressed (Yes / No) I have an if statement doing what is supposed to do (ie the submission of data / deletion in my case)

2. Triggers in the jformer framework.

I would like to have a drop down list which on click, it shows another drop down list. I have tried the following but only with the use of a checkbox, I have no clue on how to do it with a drop down:

new JFormComponentMultipleChoice('selectGroup2', '', array(
        						array('value' => 'secondGrp', 'label' => 'Student has second group?'),
            					),
           						array()),
								
     new JFormComponentDropDown('group2', 'Group 2:', $groups2array,
								array(
										'validationOptions' => array('required'),
										'dependencyOptions' => array(
										'dependentOn' => 'selectGroup2',
										'display' => 'hide',
										'jsFunction' => '$("#selectGroup2-choice1").is(":checked");'
										),
							)),	

As you can see from the above, the function checks if the checkbox is checked and is hidden if not checked.

I need a dropdown instead of a checkbox. The first dropdown displays the new drop down showing data according to what the user selected.

I allready found out how to populate the drop down from the database by using the following:

$query = "SELECT * FROM course";

$resultset = $db->query($query);

$coursearray = array();

array_push($coursearray, array ('value' => '','label' => ' - Select an Option - ','selected' => true));	

while ($row = mysql_fetch_array($resultset))
	{	
		array_push($coursearray, array ('value' => $row["course_ID"], 'label' => $row["course_Name"],));  
	}

after the array is populated, I use the following to populate the dropdown:

new JFormComponentDropDown('course', 'Course:', $coursearray,
							array(							
								'validationOptions' => array('required')
							),
							array(
								'tip' => '<p>Select Course</p>',
							)),

I know I am asking a bit more then I should but I tried almost everything I could and spent days of research on how certain stuff works. Your help is much appreciated and I would donate something small to whom helps me find a solution to these!

Thanks,
Francesco