js 获取cookies

function getCookie(c_name){if (document.cookie.length>0){ c_start=document.cookie.indexOf(c_name + "=")if (c_start!=-1){ c_start=c_start + c_name.length+1 c_end=document.cookie.indexOf(";",c_start)if (c_end==-1) c_end=document.cookie.lengthreturn unescape(document.cookie.substring(c_start,c_end))} }return ""}