SharePoint2013 Use of PreSaveAction Function on list forms

In this Article we explore how to use PreSaveAction() method in SharePoint list form in SharePoint 2013. PreSaveAction() a JavaScript function which helps us to do something before the item will be saved.

PreSaveAction function allows to override functionality when Save button is clicked. PreSaveAction function executes the code written for validation on click of save button. I just want to add one thing, you should override PreSaveItem – this is a SharePoint built in function. Instead, like mentioned above – override/create PreSaveAction.

Read some SharePoint 2013 tutorials below:

• Enable Sign in as Different User Option in SharePoint 2013
• Create subsite in SharePoint 2016 programmatically using server object model visual studio 2017
• Get manager of current SharePoint user using SPServices and GetUserProfileByName

Scenario:
I have a default SharePoint list form with save or cancel, I want the user to attach files while creating a new item. When user clicks on save button, page post back happens and if validation fails, validation message is displayed.



Solution:
I used below code with PreSaveAction function for validation to display messages on Save button click and Save button, attach runtime custom handler. Default Save button calls PreSaveItem method, which in turn calls PreSaveAction for any validations.

$(document).ready(function () {
ProducerReferral();
attachEventHandlers();// function for checking the duplication of files
$(‘input[value=Save]’).click(function () {
PreSaveTest ();
});
});

function PreSaveTest()
{
PreSaveAction();
}

function PreSaveAction() {
if($(“#idAttachmentsRow”).css(“display”)==”none”){
$(“#part1 > h4”)[1].innerHTML += “<span style=’margin-left: 40px;’ class=’ms-formvalidation ms-csrformvalidation’>Please Attach Files.</span>”;
returnVal = false;
}
else { return true ;}
}

This method is called when save button is clicked and messages are displayed in case of File not attached.

Note: If you are using “$(document).ready” in your code, make sure PreSaveAction function is written outside this block, as in above code or else PreSaveAction method will not be called.