javascript replace 替换空格

<% @ Page Language = " C# "   %>

DOCTYPE html PUBLIC  " -//W3C//DTD XHTML 1.0 Transitional//EN "   " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd " >

< script runat = " server " >

script >

< html xmlns = " http://www.w3.org/1999/xhtml "   >
< head runat = " server " >
     < title > 无标题页 title >
head >
< body >
     < form id = " form1 "  runat = " server " >
     < div >
         & nbsp; < table style = " width: 150px; height: 180px " >
             < tr >
                 < td style = " width: 146px "  align = " center " >
         < asp:TextBox ID = " TextBox1 "  runat = " server "  Font - Size = " 18px "  Height = " 87px "  TextMode = " MultiLine "
            Width = " 131px " > 12345678
23456789 asp:TextBox > td >
             tr >
             < tr >
                 < td style = " width: 146px "  align = " center " >
                 < asp:Button ID = " Button1 "  runat = " server "  Text = " 查询 "   /> td >
             tr >
         table >
     div >
     form >
     < script language = " javascript "  type = " text/javascript " >
            document.getElementById( " TextBox1 " ).onclick = setk;
            document.getElementById( " TextBox1 " ).onpropertychange = setk1;
            function setk()
             ... {
            //document.getElementById("Button1").setAttribute("disabled",false);
            document.getElementById("TextBox1").value="";
            document.getElementById("TextBox1").style.color="Black";
            }
            function setk1()
             ... {
                var rep=document.getElementById("TextBox1").value;
                var srep=rep.replace(/ /g,"");                
                if(srep!="")
                ...{
                document.getElementById("Button1").setAttribute("disabled",false);
                }
                else
                ...{
                document.getElementById("Button1").setAttribute("disabled",true);
                }
            }
         script >
body >
html >