如何使用jquery重置表单中的多个选择框？

Question

How can I reset multiple select boxes in a form with jquery?

• there are multiple select boxes
• they are dynamically generated & we don't know what they will be
• some of the boxes option tags will be marked as selected
• fiddle: http://jsfiddle.net/Qnq82/

I have this so far, it resets everything but the selects.

$('button#reset').click(function(){
    $form = $('button#reset').closest('form');
    $form.find('input:text, input:password, input:file, select, textarea').val('');
    $form.find('input:radio, input:checkbox').removeAttr('checked').removeAttr('selected');
    $form.find('select').selectedIndex = 0;
  });

Added some markup:

<form id="form" name="form" method="post" class="form" role="form" action="inventory-search" enctype="multipart/form-data">


    <div class="form-group">
        <label for="grade">Grade</label>
        <select name="grade" class="form-control input-sm" onchange="this.form.submit();">
            <option value="">Any</option>
            <option value="opt1">opt1</option>
            <option value="opt2" selected="selected">opt2</option>

        </select>
    </div>


    <!-- there are 6 more select controls -->


    <div class="form-group">
        <label>&nbsp;</label>
        <button type="submit" name="search" id="search" value="search" class="btn button-sm btn-primary">Search</button>
    </div>

    <div class="form-group">
        <label>&nbsp;</label>
        <button type="reset" name="reset" id="reset" value="reset" class="btn button-sm btn-primary">Reset</button>
    </div>

</form>

Answer 1

这将起作用：-

$form.find('select').prop('selectedIndex',0);

Answer 2

我使用此代码成功取消选择表单中的所有 html 选择：

$("#form1").find('select').prop('selectedIndex', -1);

Answer 3

I tried and searched a lot on StackOverFlow but didn't get any solution to reset multiselect.Then i found This Link . That solved my Problem. Here is the code sample.

$("#yourcontrolid").multiselect('clearSelection');

Answer 4

Change the last line to this:

$form.find('select')[0].selectedIndex = 0;

selectedIndex is a property of HTMLElement and not jQuery object.

If you know the value, then you can do $form.find('select').val('value');

Answer 5

Below code worked for me:

$('.formID').find('select[id="selectID1"]').removeAttr('selected').trigger('change');
$('.formID').find('select[id="selectID2"]').removeAttr('selected').trigger('change');

Answer 6

$form.find('select').each(function(){
    $(this).val($(this).find('option:first').val());
});

This one works for me...