A cookie is a variable that is stored on the visitor’s computer. Each time the same computer requests a page with a browser, it will send the cookie to the client machine. Cookies are KeyValue Pairs.
Create a Cookie.
This code will prompt for a name, and save the username in a cookie.
var username = prompt("Enter your name");
document.cookie = "username=" + username;
Reading a cookie
This code will read the value from the cookie and alert the username.
var cookiename = "username=" var startcookie = document.cookie.indexOf(cookiename) + cookiename.length; var endcookie = document.cookie.length; alert(document.cookie.substring(startcookie,endcookie));
This is a simple example, you can also look for expriy date of cookie, is a cookie secure etc.
To disble cookies in browser(It depends on the Browser)
Microsoft Internet Explorer 6
Tools > Internet Options > Privacy > Click advanced and check Override Automatic cookie handling checkbox, and choose the radio buttons.
