html 中如何读取cookie

//读取COOKIES

function getCookie(name)

{

var arr,reg=new RegExp("(^| )"+name+"=([^]*)(|$)")

if(arr=document.cookie.match(reg)) return unescape(arr[2])

else return null

}

var img = getCookie("xxx")

然后 document.getElementById("body").style.backgroundImage = img

<script type="text/javascript">

function getCookie(CookieName) {

var Cookie = document.cookie.split(''), tmp

for (var i = 0i <Cookie.lengthi++) {

tmp = Cookie[i].split('=')

if (tmp[0] == CookieName) return tmp[1]

tmp = null

}

Cookie = nullreturn false

}

var aspCookie = getCookie('abc')

if (aspCookie !== false) alert(aspCookie)

</script>

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