以前调试脚本的时候一般都使用debugger;语法。但系统重装后不知道为什么没有作用了。后来网上查了原来是cookie里少一个名为ASPCLIENTDEBUG键值。以下是MSDN上如何启动客户端调试的方法。引用如下:
1.创建如下代码的html文件
<html>
<head>

<script language="JavaScript">

function set ()
{
var expdate = new Date();
expdate.setMonth(expdate.getMonth()+6);
alert("setting cookie \""+form1.txtName.value+"\" to \""+form1.txtValue.value+"\"");
setCookie(form1.txtName.value, form1.txtValue.value, expdate);
}

function get ()
{
alert("getting cookie \""+form1.txtName.value+"\"");
var c = getCookie(form1.txtName.value);
alert( "cookie = "+c );

form1.txtValue.value = c;
}

function getCookie (sCookieName)
{
var sName=sCookieName+"=", ichSt, ichEnd;
var sCookie=document.cookie;

if ( sCookie.length && ( -1 != (ichSt = sCookie.indexOf(sName)) ) )
{
if (-1 == ( ichEnd = sCookie.indexOf(";",ichSt+sName.length) ) )
ichEnd = sCookie.length;
return unescape(sCookie.substring(ichSt+sName.length,ichEnd));
}

return null;
}
function setCookie (sName, vValue)
{
var argv = setCookie.arguments, argc = setCookie.arguments.length;
var sExpDate = (argc > 2) ? "; expires="+argv[2].toGMTString() : "";
var sPath = (argc > 3) ? "; path="+argv[3] : "";
var sDomain = (argc > 4) ? "; domain="+argv[4] : "";
var sSecure = (argc > 5) && argv[5] ? "; secure" : "";
document.cookie = sName + "=" + escape(vValue,0) + sExpDate + sPath + sDomain + sSecure + ";";
}
function deleteCookie (sName)
{
document.cookie = sName + "=" + getCookie(sName) + "; expires=" + (new Date()).toGMTString() + ";";
}

</script>

</head>

<body>

<form name=form1>
cookie name:<input type="text" name="txtName" value="ASPCLIENTDEBUG"><p>
cookie value:<input type="text" name="txtValue" value="doesn't matter"><p>
<input type="button" value="Set Cookie" onClick="set()">
<input type="button" value="Get Cookie" onClick="get()">
</form>
</body>
</html>
2.把次文件命名为cookie.html
3.保存至c:\inetput\wwwroot\文件夹下
4.打开IE,输入http://localhost/cookie.html,点击设置cookie按钮即可。
1.创建如下代码的html文件
<html>
<head>
<script language="JavaScript">
function set ()
{
var expdate = new Date();
expdate.setMonth(expdate.getMonth()+6);
alert("setting cookie \""+form1.txtName.value+"\" to \""+form1.txtValue.value+"\"");
setCookie(form1.txtName.value, form1.txtValue.value, expdate);
}
function get ()
{
alert("getting cookie \""+form1.txtName.value+"\"");
var c = getCookie(form1.txtName.value);
alert( "cookie = "+c );
form1.txtValue.value = c;
}
function getCookie (sCookieName)
{
var sName=sCookieName+"=", ichSt, ichEnd;
var sCookie=document.cookie;
if ( sCookie.length && ( -1 != (ichSt = sCookie.indexOf(sName)) ) )
{
if (-1 == ( ichEnd = sCookie.indexOf(";",ichSt+sName.length) ) )
ichEnd = sCookie.length;
return unescape(sCookie.substring(ichSt+sName.length,ichEnd));
}
return null;
}
function setCookie (sName, vValue)
{
var argv = setCookie.arguments, argc = setCookie.arguments.length;
var sExpDate = (argc > 2) ? "; expires="+argv[2].toGMTString() : "";
var sPath = (argc > 3) ? "; path="+argv[3] : "";
var sDomain = (argc > 4) ? "; domain="+argv[4] : "";
var sSecure = (argc > 5) && argv[5] ? "; secure" : "";
document.cookie = sName + "=" + escape(vValue,0) + sExpDate + sPath + sDomain + sSecure + ";";
}
function deleteCookie (sName)
{
document.cookie = sName + "=" + getCookie(sName) + "; expires=" + (new Date()).toGMTString() + ";";
}
</script>
</head>
<body>
<form name=form1>
cookie name:<input type="text" name="txtName" value="ASPCLIENTDEBUG"><p>
cookie value:<input type="text" name="txtValue" value="doesn't matter"><p>
<input type="button" value="Set Cookie" onClick="set()">
<input type="button" value="Get Cookie" onClick="get()">
</form>
</body>
</html>3.保存至c:\inetput\wwwroot\文件夹下
4.打开IE,输入http://localhost/cookie.html,点击设置cookie按钮即可。



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