摘要: 1 <select onfocus="this.defaultIndex=2;" onchange="this.selectedIndex=this.defaultIndex;"> 2 <option value="1">1</option> 3 <option value="2">2</optio 阅读全文
posted @ 2020-09-21 10:55 tcanhe 阅读(196) 评论(0) 推荐(0) 编辑