Learn ECMAScript - Second Edition

Getting a cookie value

JavaScript doesn't provide any convenient way out of the box to actually get a cookie value. All we have is just a bunch of random cookies together in a string, which is accessible by document.cookie. We will need to do some work, as shown in the following snippet:

document.cookie = "awesomecookie=yes;";document.cookie = "ilovecookies=sure;";document.cookie = "great=yes";function getCookie(name) {    const cookies = document.cookie.split(';');    for(let i=0;i < cookies.length;i++) {        if(cookies[i].trim().indexOf(name) === 0) {            return cookies[i].split('=')[1];        }    }    return null;}console.log(getCookie("ilovecookies"));console.log(getCookie("doesnotexist"));

The output will be, therefore, as follows:

surenull

As you can see in ...