SP2013 validate required fields before presaveaction

Question

Is there a function that can be called in presaveaction that will do the preliminary SP required fields validation first?

For a simple example: A form has a start date and an end date, both required fields.

Before I do my presaveaction test that Start date < end date, I'd like to ensure that the fields have already been filled in as part of the standard SP required field validation testing.

Answer 1

The only solution I can think of is to write a script to look through the page to find all the fields that have the words "Required Field" in the title and see if there is any value assigned to it.

I don't think I have any inclination to do this. Perhaps an addition to jQuery one day?

Anyone keen enough could start with something like this:

https://www.mavention.nl/showing-required-fields-when-editing-a-page-sharepoint-2013/

The answer to How do I trigger the default form validation without submitting the form was that it could not be done.

Whilst not an ideal solution, future readers could look up Save conflict - reset ratings and ratingscount in presaveaction ... the use of window.onbeforeunload may give inspiration.

Answer 2

You can use PreSaveAction like the following:

<script language="javascript">
function PreSaveAction()
{
    //get your start and end date value
    //perform validation such as end date could not before start date
    return true;  // OK to proceed with the save item 
}
</script>

other useful URL: http://chandanbadajena.blogspot.com.au/2011/09/add-javascript-date-validation-into.html

here also some other answer How do I trigger the default form validation without submitting the form