You can check if a file field is empty or not using jquery Suppose you have an input field like this
<form id="myForm"> <input type="file" id="myFile"/> <a href="javascript:void(0);" id="check">Check</a> </form>You can check if the filed is empty or not like this
<script> $(document).on('click', '#check', function(){ if ($('#myFile').get(0).files.length === 0) { console.log("No files selected."); } }) </script>