考虑简单的多选框有了多个选择,我们如何才能知道用户选择了或未选择某个值?
<select name="waste" id="waste" multiple>
<option value="5">garbage</option>
<option value="6">food</option>
<option value="8">Tin</option>
<option value="9">Can</option>
</select>
它所做的就是火更改事件
$('#waste').change(function(){
//Inside here how will I know that this event was fired when user removed some values from selection
// or did he added more values in selection
});
http://stackoverflow.com/questions/1159046/jquery-change-event-on-an-input-element-any-way-to-retain-previous-value;这可能有帮助。干杯! – 2012-04-03 07:36:03