Show confirmation message on click of save in OOB list forms in SharePoint, add the below script in each OOB list form page. <script type="text/javascript" language="javascript" src="/sites/dev/Style%20Library/Scripts/jquery-3.1.0.min.js"></script> <script type="text/javascript"> function PreSaveAction() { if($('[id*="Update"]').is(':checked')){ return (confirm("This item has value of Update as “Yes”. Are you sure you want to save this item?")); } else{ return true; } } </script>
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