<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <select name="selectBox1" id="selectBox1"> <option value="option1">option1</option> <option value="option2">option2</option> <option value="option3">option3</option> <option value="option4">option4</option> </select> <select name="selectBox2" id="selectBox2"> <option value="option1">option1</option> <option value="option2">option2</option> <option value="option3">option3</option> <option value="option4">option4</option> </select> <select name="selectBox3" id="selectBox3"> <option value="option1">option1</option> <option value="option2">option2</option> <option value="option3">option3</option> <option value="option4">option4</option> </select>

$(document).ready(function(){ $('select').on('change', function(event ) { var prevValue = $(this).data('previous'); $('select').not(this).find('option[value="'+prevValue+'"]').show(); var value = $(this).val(); $(this).data('previous',value); $('select').not(this).find('option[value="'+value+'"]').hide(); }); });