JavaScript CodeSnippets——获取Cookie

function getCookie(Name) {
　　var search = Name + "="
　　var returnvalue = "";
　　if (document.cookie.length > 0) {
　　offset = document.cookie.indexOf(search)
　　if (offset != -1) {
　　offset += search.length
　　end = document.cookie.indexOf(";", offset);
　　if (end == -1)
　　end = document.cookie.length;
　　returnvalue=unescape(document.cookie.substring(offset, end))
}

用法：
if( getCookie("myCookie") ){
//Todo something
}