javascript记录

客户端用javascript获得dropdownlist的值
var ddl=document.getElementById("DropDownListID");
var a=ddl.options[ddl.selectedIndex].value;


js字母大小写转换
str   =   str.toUpperCase()   //大写   
str   =   str.toLowerCase()   //小写


//取得FileUPload的文件名
var s = document.getElementById( "FileDown" );        
alert(s.value.match(/([^\\\/]*)$/)[1]); 

fileupload事件
onpropertychange="checkDownName(escape(document.getElementById('FileDown').value.match(/([^\\\/]*)$/)[1]));"



ifram框架整个刷新
Response.Write( "<script>parent.location.reload();</script>" );
ifram刷新Product_Left框架
Response.Write( "<script>parent.frames['Product_Left'].location.reload(true);</script>" );