使用 jquery 从 bootstrap selectpicker 文本框中获取值

Question

I want to get value from bootstrap select picker text box if user input some text but it didn't trigger anything

<select id="user_search" class="form-control" data-live-search='true' search='true'>
    <option>option 1</option>
    <option>option 2</option>
    <option>option 3</option>
</select>

<script>
    $("user_search# input").live("keyup", function (e) {
        alert($(this).val());
    });
</script>

Answer 1

Make sure you have added those js and CSS and the jquery code as I have written

 $(document).ready(function() { $(document).on('keyup', '#userDropdown.bs-searchbox input', function(e) { alert($(this).val()); }); $(document).on('keyup', '#cityDropdown.bs-searchbox input', function(e) { alert($(this).val()); }); });

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.12.1/css/bootstrap-select.css" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.12.1/js/bootstrap-select.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <div id="userDropdown"> <select name="user_search" data-live-search="true" class="selectpicker"> <option>option 1</option> <option>option 2</option> <option>option 3</option> </select> </div> <div id="cityDropdown"> <select name="city_search" data-live-search="true" class="selectpicker"> <option>City 1</option> <option>City 2</option> <option>City 3</option> </select> </div>