JS set cookies, delete cookies

js set cookies, delete cookies

There are a number of ways to set up cookies for JS.

The first: (This is the code of the official website)

<script>//Set cookie function Setcookie (CNAME, cvalue, exdays) {var d = new Date ();
    D.settime (D.gettime () + (exdays*24*60*60*1000));
    var expires = "expires=" +d.toutcstring ();
Document.cookie = cname + "=" + Cvalue + ";" + expires;
    //Get Cookie function GetCookie (CNAME) {var name = cname + ' = ';
    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);
    if (c.indexof (name)!=-1) return c.substring (Name.length, c.length);
} return "";}  
Clears the cookie function ClearCookie (name) {Setcookie (name, "",-1);
    function Checkcookie () {var user = GetCookie ("username");
    if (User!= "") {alert ("Welcome again" + user);
        else {user = prompt ("Please enter your name:", "");
        if (User!= "" && user!= null) {Setcookie ("username", user, 365); 
}} checkcookie (); </script>

The second type:

<script>
//js How to operate cookies!

Write Cookies
function Setcookie (c_name, value, expiredays) {
 var exdate=new Date ();
Exdate.setdate (exdate.getdate () + expiredays);
Document.cookie=c_name+ "=" + Escape (value) + ((expiredays==null)? ":"; expires= "+exdate.togmtstring ());
 }
 
Read Cookies
function GetCookie (name)
{
    var arr,reg=new RegExp ("(^|)" +name+ "= ([^;] *)(;|$)");
 
    if (Arr=document.cookie.match (reg)) return
 
        (arr[2]);
    else return
        null;
}

Delete Cookies
function Delcookie (name)
{
    var exp = new Date ();
    Exp.settime (Exp.gettime ()-1);
    var cval=getcookie (name);
    if (cval!=null)
        document.cookie= name + "=" +cval+ "; expires=" +exp.togmtstring ();
}
Use
The example Setcookie (' username ', ' Darren ', ') 
alert (GetCookie ("username"));
</script>

A third example