法1:
<select onchange="this.selectedIndex=1">
<option>1</option>
<option selected>2</option>
<option>3</option>
</select>法2:
<style>
select{falcon:expression(selectedIndex=0)}
</style>
<select>
<option>1</option>
<option>2</option>
</select>
<select >
<option>1</option>
<option>2</option>
</select>
法3:
<style>
select.readonly{meizz:expression(selectedIndex=0)}
</style><select class="readonly">
<option>1</option>
<option>2</option>
</select><select>
<option>1</option>
<option>2</option>
</select>
<select onchange="this.selectedIndex=1">
<option>1</option>
<option selected>2</option>
<option>3</option>
</select>法2:
<style>
select{falcon:expression(selectedIndex=0)}
</style>
<select>
<option>1</option>
<option>2</option>
</select>
<select >
<option>1</option>
<option>2</option>
</select>
法3:
<style>
select.readonly{meizz:expression(selectedIndex=0)}
</style><select class="readonly">
<option>1</option>
<option>2</option>
</select><select>
<option>1</option>
<option>2</option>
</select>
方法1和 dh20156(风之石)提供的方法不能用的
其他几个方法我怎么没看明白呢?
selectedIndex=0
0是怎么得来的?
表单提交给本页后
应该怎么得到select里选中的选项的selectedIndex的值