Jquery operation cookie, jquery reading cookie, jquery setting cookie, jquery deleting cookie

After a long night and no sleep, I studied the Jquery Method for Cookie operation. Here I paste the finished product directly without analysis. The following describes how to use it.

jQuery.cookie=function(name,value,options){    if(typeof value!='undefined'){        options=options||{};        if(value===null){            value='';            options.expires=-1;        }        var expires='';        if(options.expires&&(typeof options.expires=='number'||options.expires.toUTCString)){             var date;            if(typeof options.expires=='number'){                date=new Date();                date.setTime(date.getTime()+(options.expires * 24 * 60 * 60 * 1000));             }else{                 date=options.expires;            }            expires=';expires='+date.toUTCString();         }        var path=options.path?';path='+options.path:'';        var domain=options.domain?';domain='+options.domain:'';        var secure=options.secure?';secure':'';        document.cookie=[name,'=',encodeURIComponent(value),expires,path,domain,secure].join('');     }else{        var cookieValue=null;        if(document.cookie&&document.cookie!=''){            var cookies=document.cookie.split(';');            for(var i=0;i<cookies.length;i++){                var cookie=jQuery.trim(cookies[i]);                if(cookie.substring(0,name.length+1)==(name+'=')){                    cookieValue=decodeURIComponent(cookie.substring(name.length+1));                    break;                }            }        }        return cookieValue;    }};

Example:

$. Cookie ('username'); // get cookie $. cookie ('username', 'zhang san'); // set cookie $. cookie ('username', 'lily', {expires: 3}); // set the cookie with time for 3 days $. cookie ('username', '', {expires:-1}); // Delete cookie $. cookie ('username', null); // delete a cookie

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