响应回车和判断是否为数字的函数(可用于分页)

< script language = " javascript "  type = " text/javascript " >
// 分页处理函数
function  check()
{
   // 响应回车
   if(event.keyCode == 13)
   {
      var currentPage = document.getElementById("currentPage");
      var totalPage = document.getElementById("totalPage");
      var flag = true;
      if(isNaN(currentPage.value))
      {
         alert('请输入数字');
         currentPage.value = "";
         currentPage.focus();  
         return false;
        
      }
      else
      {
           //处理输入大于总页数
           if(currentPage.value > totalPage.value)
               currentPage.value = totalPage.value;
           //处理小数或负数
           if(currentPage.value <= 0)
               currentPage.value = 1;
           //跳转
         window.location = "user.action?currentPage=" + currentPage.value;
         currentPage.focus(); 
         return true;
      }
   }
}
</ script >

< input  type ="text"  name ="currentPage"  size ="2"  onkeydown ="return check();" />  
             <!--  保存总页数,用于javascript处理分页  -->
             < input  type ="hidden"  id ="totalPage"  value ="<s:property value=" #page.totalPage" /> " />

其中的totalPage是通过分页类算出来的.

々上善若水々 2007-12-02 20:29 发表评论