如何正确嵌套If / Else语句？

Question

I am trying to set multiple cookies. if a specific cookie exists another one is set. ie if cookie "1" exists i set cookie"2" and if cookie 2 exists i set cookie "3" and so on.

i am trying to achieve that with an if/else statement which i couldn't get to work.

if(getCookie('1')) {
    setCookie('2',1,365);
} else {
    if(getCookie('2')) {
        setCookie('3',1,365);
    } else {
        if(getCookie('3')) {
            setCookie('4',1,365);
        } else {
            if(getCookie('4')) {
                setCookie('5',1,365);
            } else {
                setCookie('1',1,365);
            }
        }
    }
}

What i want to achieve is show different messages for a returning visitors to my site. not just for the 1st time visit but until their 10th visit .

Answer 1

It would be easier if you use a loop. Interate through the desired values, and if it exists, you add it +1... If none is set, the default one is applied...

var cookieToSet = "1";
for(var i=1; i<=4; i++) {
    if(getCookie(i)) {
        cookieToSet = i+1;
        break;
    }
}
setCookie(cookieToSet', 1, 365);

Answer 2

try this :

if(getCookie('1'))
    {
    setCookie('2',1,365);
    }else if(getCookie('2'))
    {
        setCookie('3',1,365);
     }else if(getCookie('3'))
     {
            setCookie('4',1,365);
     }else if(getCookie('4'))
     {
          setCookie('5',1,365);
      }else
      {
           setCookie('1',1,365);
      }

or else use switch case for it , hope it will work for you !!