<form>
<select id=object>
<option>1</option>
<option>2</option>
</select>
</form>
<button onclick=alert(document.forms[0].object.selectedIndex)>CHeck</button>
<select id=object>
<option>1</option>
<option>2</option>
</select>
</form>
<button onclick=alert(document.forms[0].object.selectedIndex)>CHeck</button>
我的代码很简单,就是这一句:
alert(document.forms[0].object.selectedIndex)
此事件就是发生于单击文本
那是什么?
<option>a</option>
<option>a</option>
<option>a</option>
<option>a</option>
<option>a</option>
<option>a</option></select>
<SELECT NAME="ww" MULTIPLE onClick="alert(document.forms[0].ww.selectedIndex);">
<OPTION>fdgs
<OPTION>df
<OPTION>dfgg
<OPTION>dfg
<OPTION>dfgb</SELECT>
结果就出错了,请大家看看!!!
<SELECT NAME="ww" MULTIPLE onClick="alert(document.forms[0].ww.selectedIndex);">
<OPTION>fdgs
<OPTION>df
<OPTION>dfgg
<OPTION>dfg
<OPTION>dfgb
</SELECT>
</form>
<OPTION>fdgsasdf
<OPTION>346456
<OPTION>dfggasdfa
<OPTION>356457645
<OPTION>dfgbasdf
<OPTION>346456
<OPTION>dfasdfas
<OPTION>6457458
<OPTION>dfgasdf
<OPTION>45756856
</SELECT>
2、多选的话默认是最上面一个<SELECT NAME="ww" size=6 MULTIPLE onchange="alert(this.selectedIndex);">
<OPTION>fdgsasdf
<OPTION>346456
<OPTION>dfggasdfa
<OPTION>356457645
<OPTION>dfgbasdf
<OPTION>346456
<OPTION>dfasdfas
<OPTION>6457458
<OPTION>dfgasdf
<OPTION>45756856
</SELECT>
<OPTION>fdgs
<OPTION>df
<OPTION>dfgg
<OPTION>dfg
<OPTION>dfgb
</SELECT>