根据w3schools ，选项标签确实支持onclick属性。我尝试使用IE6的底部，这似乎并非如此。

According to w3schools, the option tag does support an onclick attribute. I tried with with bottom of the barrel IE6 and this doesn't seem to be the case.

最简单的方法是：

<select multiple="multiple" onchange="alert(this.value);">
 <option value="tx">Texas</option>
 <option value="ak">Alaska</option>
 <option value="ca">California</option>
 <option value="ws">Washington</option>
 <option value="tn">Tennessee</option>
</select>

这不是你想要的，但应该非常接近。

This is not exactly what you are after, but should be pretty close.

编辑

这只需要更多工作：

<select multiple="multiple" onchange="
    switch (this.value){
      case 'tx': funcOne(); break;
      case 'ak': funcTwo(); break;
      etc...
   }
 ">
 <option value="tx">Texas</option>
 <option value="ak">Alaska</option>
 <option value="ca">California</option>
 <option value="ws">Washington</option>
 <option value="tn">Tennessee</option>
</select>

此时将onchange包装成js文件中的函数而不是嵌入是合适的它在html中。

At this point it would be appropriate to wrap the onchange into a function in a js file instead of embedding it in the html.