jquery - 关于div中的类的问题

Question

如果我有这段代码:

 <div id="one">
        <label>first</label> 
        <select name="area" class="area">
        <option selected="selected">First</option>
    </div>

 <div id="two">
        <label>second</label> 
        <select name="area" class="area">
        <option selected="selected">Second</option>
 </div>

有这样的可能吗？

  $("#one: .area").change(function() {}

or 

 $("#two: .area").change(function() {}

它不起作用，有人可以解释为什么吗？

Answer 1

尝试:

<div id="one">
        <label>first</label> 
        <select name="area" class="area">
        <option selected="selected">First</option>
         </select>
    </div>

 <div id="two">
        <label>second</label> 
        <select name="area" class="area">
        <option selected="selected">Second</option>
        </select>
 </div>

$("#one select.area").change(function() {}