View source for Client-side form validation

==Problem & workaround with JToolBar==
If you are using JHTML::_('behavior.formvalidation') with JToolBar, for example use in backend, the above method will not work. This is because it depends on onSubmit event which did not fire when we call form.submit via JavaScript. To work around this, we have to move the code in onSubmit to be in submitbutton function override. This will look like this:-
<source lang="javascript">
<script type="text/javascript">
/* Override joomla.javascript, as form-validation not work with ToolBar */
function submitbutton(pressbutton) {
    if (pressbutton == 'cancel') {
        submitform(pressbutton);
    }else{
        var f = document.adminForm;
        if (document.formvalidator.isValid(f)) {
            f.check.value='<?php echo JSession::getFormToken(); ?>'; //send token
            submitform(pressbutton);    
        }
        else {
            var msg = new Array();
            msg.push('Invalid input, please verify again!');
            if ($('title').hasClass('invalid')) {
                msg.push('<?php echo JText::_('COM_JONGMAN_ERROR_SCHEDULE_TITLE_IS_REQUIRED')?>');    
            }
            if($('admin_email').hasClass('invalid')){
                msg.push('<?php echo JText::_('COM_JONGMAN_ERROR_INVALID_EMAIL')?>');
            }
            alert (msg.join('\n'));
        }
    }    
}
</script>
</source>