CODEWITHSUNDEEP
javascriptcookies
Jonas
Jonas

Reputation: 1069

JavaScript Cookies check/set/delete

I just wanna check if a cookie exists, set/reset the cookie for 1 day, and delete the cookie when the window/tab is closed

I'm trying to do this in JavaScript, but hell JS is one dumbass language(I swear), add to that I'm stupid.

Anyways here's what i'm doing:

function checkcookie(name)
{
    //Can't figure this one out
    //I want to check wheather the cookie is set or not
    //if yes
    //{ reset cookie + ... }
    //else
    //{ set cookie + ... }
}

function setcookie(name,value,day)
{
    var expireDate = new Date();
    expireDate.setSeconds(expireDate.getSeconds()+day*24*60*60*1000);
    document.cookie = name + "=" + value + ";path=/;expires=" + expireDate.toGMTString();
}

function delcookie(name)
{
    setcookie(name,"",-1);
}

Any kind of answer is appreciated and thx in advance.

Upvotes: 2

Views: 11955

Answers (3)

FluffyKitten
FluffyKitten

Reputation: 14312

You can test the Quirksmode code here: http://jsfiddle.net/67RFW/

The code is working so it must be something else causing your problem... so see what it does for you if you run it in jsfiddle.net - that might help determine if its a browser setting

Upvotes: 1

Ahmet Can Güven
Ahmet Can Güven

Reputation: 5462

Here, try it. 

  function checkcookie(name)
    {


  if (name!=null && name!="")
  {
     //reset cookie
     cookie_value="test";
     document.cookie=name + "=" + cookie_value;
  }
else
  {
     //if there is no cookie, create a new one
     cookie_value="test";
     document.cookie=name + "=" + cookie_value;
  }
}


    function setcookie(name,day)
    {
        var expireDate = new Date();
        expireDate.setSeconds((expireDate.getSeconds()+day*24*60*60*1000);
        document.cookie = "Name=" + name + ";path=/;expires=" + expireDate.toGMTString();
    }

    function delcookie(name)
    {
        setcookie(name,"",-1);
    }

Upvotes: 0

wsanville
wsanville

Reputation: 37516

Quirksmode.org has an excellent article on writing wrapper methods for interacting with document.cookie (an inherently unfriendly object).

The article explains how to implement the following methods: readCookie, createCookie, and eraseCookie.

From these methods, it's easy to implement your checkCookie function, that is, if readCookie returns null or not.

Here's your checkCookie:

function checkCookie(name)
{
    return readCookie(name) != null;
}

Here's the other three functions that the article provides:

function createCookie(name,value,days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
    }
    else var expires = "";
    document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for(var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}

function eraseCookie(name) {
    createCookie(name,"",-1);
}

Upvotes: 6

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