Share a class for adding, deleting, and modifying cookies in javascript

I have been unemployed at school for one and a half months. I haven't found an internship yet. It's a tragedy and it hurts. cookie. js has changed to the pure javascript version. For future projects, I only need to add a function to get all the cookie key values on the page.

The function is assembled by analyzing the document. cookie string.

Review the operations on cookies in javascript:

You can use document. cookie = "userId = 111"; to add a cookie.

Full Version: document. cookie = "userId = 111; domain = .google.com; path = \; secure = secure; expire =" + date. toGMTString ();

You can set the cookie expiration time, domain name, and path.

You only need to delete it before setting the expire time to the current time.

Now I am modifying the javascript. cookie. js class

View Code

/*cookie helper classeasy to write,get,delete */var myCookie={    get:function(name){        if(typeof name != "undefined")        {            //if name given call the get value function            return myCookie_get(name);        }else{            //if name is not given,i want get all the cookie item            return myCookie_getAll();        }    },    add:function(name,value,options){        //write the cookie        myCookie_add(name,value,options);    },    delete:function(name){        //delete the cookie        myCookie_add(name,null);    }}String.prototype.Trim = function(){    return this.replace(/^\s+/g,"").replace(/\s+$/g,"");}/*cookie write function@name:the cookie name not null@value:the cookie value null==delete the cookie@option:{"expires":expire time;"path":/;"domain":localhost;"secure":secure} */function myCookie_add(name,value,options){    if (typeof value != 'undefined') { // name and value given, set cookie        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(); // use expires attribute, max-age is not supported by IE        }        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('');    }}/*get the name cookie@name:the cookie's name */function myCookie_get(name){    var cookieValue = null;    if (document.cookie && document.cookie != '') {        var cookies = document.cookie.split(';');        for (var i = 0; i < cookies.length; i++) {            var cookie = cookies[i].Trim();            // Does this cookie string begin with the name we want?            if (cookie.substring(0, name.length + 1) == (name + '=')) {                cookieValue = decodeURIComponent(cookie.substring(name.length + 1));                break;            }        }    }    return cookieValue;}/*get all the cookie return as a json */function myCookie_getAll(){    var cookieArray = new Array();    var str="";    var temp;    if (document.cookie && document.cookie != '') {        var cookies = document.cookie.split(';');        for (var i = 0; i < cookies.length; i++) {            var cookie = cookies[i].Trim();            temp=cookie.split('=');            //take the            cookieArray.push("{\"name\":\""+decodeURIComponent(temp[0])+"\",\"value\":\""+decodeURIComponent(temp[1])+"\"}");        }        str=cookieArray.join(",");    }    str="["+str+"]";    return eval('('+str+')');}

The call is also quite simple.

View Code

MyCookie. add ("useraccount", "admin", {"expires": 5}); // add a cookie alert (myCookie. get ("useraccount"); // retrieve cookie cookies = myCookie. get (); // get all cookies for (var I = 0; I <cookies. length; I ++) {alert (cookies [I] ["name"] + ":" + cookies [I] ["value"]);} myCookie. delete ("useraccount"); // delete the cookie alert (myCookie. get ("useraccount "));

Hope you can provide guidance