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如何用javascript往cookie里写东西


------解决方案--------------------

javascript cookies 存、取、删除实例
<script>

//写cookies函数 作者：翟振凯
function SetCookie(name,value)//两个参数，一个是cookie的名子，一个是值
{
var Days = 30; //此 cookie 将被保存 30 天
var exp = new Date(); //new Date( "December 31, 9998 ");
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "= "+ escape (value) + ";expires= " + exp.toGMTString();
}
function getCookie(name)//取cookies函数
{
var arr = document.cookie.match(new RegExp( "(^| ) "+name+ "=([^;]*)(;|$) "));
if(arr != null) return unescape(arr[2]); return null;

}
function delCookie(name)//删除cookie
{
var exp = new Date();
exp.setTime(exp.getTime() - 1);
var cval=getCookie(name);
if(cval!=null) document.cookie= name + "= "+cval+ ";expires= "+exp.toGMTString();
}


SetCookie ( "xiaoqi ", "3 ")
alert(getCookie( 'xiaoqi '));
</script>