Develop Reference

Cookies on external server

I'm using the code below to handle cookies, it works fine locally, but when I upload it to our testserver the cookies are not set (it's the same for Firefox, IE and Chrome, so I don't think it's a browser issue).
Cookies are allowed since I can set cookies using PHP setcookie("RFT_reeftWpLang", $lang, time()+29030400, dirname($_SERVER["SCRIPT_NAME"]), $_SERVER["SERVER_NAME"]);
Neither locally nor on the server I get any errors when I try to set document.cookie, but on the server console.log( getFilterCookie(cname)); return an empty string where I do get the expected value locally.
I know you probably can not say what's wrong without access to the server, but I hope you might tell me what to look for in order to pinpoint the error
function setFilterCookie(cname,cvalue,exdays) {
var cookiePath = "/";
var pathArray = window.location.pathname.split( '/' );
if (pathArray.length > 2 && $.trim(pathArray[1]) != "" ) {
cookiePath = cookiePath+pathArray[1];
}
var d = new Date();
d.setTime(d.getTime()+(exdays*24*60*60*1000));
var expires = "expires="+d.toGMTString();
try {
document.cookie = cname+"="+cvalue+"; "+expires+"; domain="+window.location.host+"; path="+cookiePath ;
} catch (e) {console.log(e);}
if(exdays < 0) {
document.cookie = cname+"="+cvalue+"; "+expires;
}
console.log( getFilterCookie(cname));
}
function getFilterCookie(cname) {
var name = cname + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++) {
var c = $.trim(ca[i]);
if (c.indexOf(name)==0) {
return c.substring(name.length,c.length);
}
}
return "";
}
function delFilterCookie(cname) {
setFilterCookie(cname, "", -1);
}

Thank for helping
On our testserver we have the port in the url, so it get's part of the domain, it works's after I have changed my code to
var domainArray = window.location.host.split( ':' );
var domain = domainArray[0];
try {
console.log(document.cookie = cname+"="+cvalue+"; "+expires+"; domain="+domain+"; path="+cookiePath);
} catch (e) {
console.log(e);
console.log("fail setFilterCookie" + cname + " - " + cvalue + " - " + exdays);}

JavaScript Compiler Error in Tag Manager

I'm trying to use a cookie to set user pageviews per session through GTM. I'm using a custom JavaScript variable:
function readCookie(name) {
var cookieName = name + "=";
var cookieSplit = document.cookie.split(';');
for (var i = 0; i < cookieSplit.length; i++) {
var cookies = cookieSplit[i];
while (cookies.charAt(0) === ' ') cookies = cookies.substring(1, cookies.length);
if (cookies.indexOf(cookieName) === 0) return cookies.substring(cookieName.length, cookies.length);
}
return null;
}
function viewAppend() {
var oldCookie = readCookie('viewCount');
if (oldCookie === null) {
document.cookie = "viewCount=1; path=/";
} else {
var views = oldCookie + 1;
document.cookie = "viewCount="+views+"; path=/";
}
}
viewAppend();
I keep getting the same Compiler error: "Error at line 12, character 1: Parse error. ')' expected."
I can't seem to figure out what I'm doing wrong, but any help is appreciated.
------ EDIT ------
Via my comment below, this is my current code. Current error is : "Error at line 16, character 40: Parse error. Semi-colon expected"
function doStuff() {
function readCookie(name) {
var cookieName = name + "=";
var cookieSplit = document.cookie.split(';');
for(var i=0;i < cookieSplit.length;i++) {
var cookies = cookieSplit[i];
while (cookies.charAt(0) === ' ') cookies = cookies.substring(1,cookies.length);
if (cookies.indexOf(cookieName) === 0) return cookies.substring(cookieName.length,cookies.length);
}
return null;
}
function viewAppend() {
var oldCookie = readCookie('viewCount');
if (oldCookie === null) {
document.cookie = "viewCount="1"; path=/";
} else {
var views = parseInt(oldCookie) + 1;
document.cookie = "viewCount="+views+"; path=/";
}
}
}

You have quoting problems on this line:
document.cookie = "viewCount="1"; path=/";
it should be:
document.cookie = "viewCount=1; path=/";
You don't need to put quotes around the value of a cookie (and if you did, you could either escape them or use single quotes around the whole string).

Alright, I went back to the drawing board and tried approaching the problem another way. At first I was trying to build everything into a single custom JavaScript variable in GTM. That was folly. I decided to approach it as such:
First, I built a custom HTML tag in GTM to read/write the PageView cookie that fired on all pages.
<script>
function readCookie(name) {
var cookieName = name + "=";
var cookieSplit = document.cookie.split(';');
for(var i=0;i < cookieSplit.length;i++) {
var cookies = cookieSplit[i];
while (cookies.charAt(0) === ' ') cookies = cookies.substring(1,cookies.length);
if (cookies.indexOf(cookieName) === 0) return cookies.substring(cookieName.length,cookies.length);
}
return null;
}
function viewAppend() {
var oldCookie = readCookie('viewCount');
if (oldCookie === null) {
document.cookie = "viewCount=1; path=/";
} else {
var views = parseInt(oldCookie) + 1;
document.cookie = "viewCount="+views+"; path=/";
}
}
viewAppend();
</script>
Then I built a custom Javascript variable that read the cookie and returned it as an integer.
function doStuff() {
function readCookie(name) {
var cookieName = name + "=";
var cookieSplit = document.cookie.split(';');
for(var i=0;i < cookieSplit.length;i++) {
var cookies = cookieSplit[i];
while (cookies.charAt(0) === ' ') cookies = cookies.substring(1,cookies.length);
if (cookies.indexOf(cookieName) === 0) return cookies.substring(cookieName.length,cookies.length);
}
return null;
}
var oldCookie = readCookie('viewCount');
var views = parseInt(oldCookie);
return views;
}
Then I simply built my pagievew tag that triggered whenever the pageviews variable was greater than 4 on Window Load to indicate an engaged user.
Thanks #Barmar for the help thinking about the problem. Your questions definitely challenged how I was approaching it.

How to set a cookie that prevents further javascript alerts?

I have this code for detecting android:
var mobile = (/android/i.test(navigator.userAgent.toLowerCase()));
if (mobile){
alert("Message to android users");
}
...but how do I get that script to also set a cookie so the android user doesn't continue getting the alert (either on reloading the page, returning later to the page, or navigating to other pages which have the alert)?
I also have this, which uses a cookie to avoid a user viewing a "welcome page" they've already seen:
var RedirectURL = "http://www.example.com/real-home-page.html";
var DaysToLive = "365";
var CookieName = "FirstVisit";
function Action() {
location.href = RedirectURL;
}
DaysToLive = parseInt(DaysToLive);
var Value = 'bypass page next time';
function GetCookie() {
var cookiecontent = '';
if(document.cookie.length > 0) {
var cookiename = CookieName + '=';
var cookiebegin = document.cookie.indexOf(cookiename);
var cookieend = 0;
if(cookiebegin > -1) {
cookiebegin += cookiename.length;
cookieend = document.cookie.indexOf(";",cookiebegin);
if(cookieend < cookiebegin) { cookieend = document.cookie.length; }
cookiecontent = document.cookie.substring(cookiebegin,cookieend);
}
}
if(cookiecontent.length > 0) { return true; }
return false;
}
function SetCookie() {
var exp = '';
if(DaysToLive > 0) {
var now = new Date();
then = now.getTime() + (DaysToLive * 24 * 60 * 60 * 1000);
now.setTime(then);
exp = '; expires=' + now.toGMTString();
}
document.cookie = CookieName + '=' + Value + exp;
return true;
}
if(GetCookie() == true) { Action(); }
SetCookie();
Can the second script be adapted and combined into the first to do something like:
function Action() {
don't-open-that-alert-again;
I've googled and found some js cookie scripts, but all over 100K. Prefer something as succinct as the above.

set cookie on page to show bootstrap popup once a day

I'm learning JavaScript and I see that this question has been asked many times, but I can't get this to work for me.
What I want to do is, show a bootstrap modal once a day.
What I have so far is:
function setCookie(cookiename, cookievalue, expdays) {
var d = new Date();
d.setTime(d.getTime()+(expdays * 24 * 60 * 60 * 1000));
var expires = "expires=" + d.toGMTString();
document.cookie = cookiename + "=" + cookievalue + "; " + expires;
}
function getCookie(cookiename) {
var name = cookiename + "=";
var ca = document.cookie.split(';');
for(var i = 0; i < ca.length; i++) {
var c = ca[i].trim();
if (c.indexOf(name) == 0) return c.substring(name.length, c.length);
}
//I want to check if there is a cookie.
//if I have not set a cookie, I want to show my modal,
//if there is a cookie then return;
//The cookie should expire in one day.
function checkCookie() {
var showed = getCookie("showed");
if (showed != null && showed != "") {
var date = new Date(showed).getDate();
var currentDate = new Date().getDate();
if (currentDate > date) {
return true;
}
return false;
}
return true;
}
Now, if I change the last return true; to return false; my modal does not show up.
The way it is now I see the modal every time.
What am I doing wrong?
How can I fix this?

function setCookie(cookiename, cookievalue, expdays) {
var d = new Date();
d.setTime(d.getTime()+(expdays * 24 * 60 * 60 * 1000));
var expires = "expires=" + d.toGMTString();
document.cookie = cookiename + "=" + cookievalue + "; " + expires;
}
function getCookie(cookiename) {
var name = cookiename + "=";
var startPos = document.cookie.indexOf(name);
if(startPos == -1) return null;
startPos+=(name.length);
if(document.cookie.indexOf(";",startPos) == -1){
return document.cookie.substring(startPos,document.cookie.length);
}
else{
return document.cookie.substring(startPos,document.cookie.indexOf(';',startPos));
}
return null;
}
//I want to check if there is a cookie.
//if I have not set a cookie, I want to show my modal,
//if there is a cookie then return;
//The cookie should expire in one day.
function checkCookie() {
var showed = getCookie("showed");
if (showed != null && showed != "") {
var date = new Date(showed).getDate();
var currentDate = new Date().getDate();
if (currentDate > date) {
return true;
}
return false;
}
return true;
}
Also when setting cookie,
use
setCookie('showed',new Date().toGMTString(),1);
because we are using the value of cookie, not the expire time of cookie to check. So the value must be a datestring

Javascript - Using cookies to store an integer

I am trying to use a cookie to store a single integer, so when the user refreshes the page I am able to retrieve the previous number they were on (in an attempt to stop doubles of a video appearing).
What would the minimum requirements be to accomplish this?
var randomNumber = Math.floor((Math.random()*10)+1);
document.cookie=(randomNumber);
Setting a cookie:
document.cookie = 'mycookie=' + randomNumber + ";max-age=" + (300) + ";";
Reading a cookie:
var cookie = document.cookie;
alert(decodeURIComponent(cookie));
The cookie contains some other random stuff like push=1 as well as mycookie. Should I be setting the cookie to null before I add the randomNumber?
As far as getting the value of mycookie would I just assign the cookie to a string and parse mycookie from it?

Tamil's comment is solid. Use these quirksmode functions if you ever wish to surpass minimal cookie usage:
cookie_create = function (name,value,days) {
var expires, date;
if (days) {
date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
expires = "; expires="+date.toGMTString();
}
else expires = "";
document.cookie = name+"="+value+expires+"; path=/";
expires = date = null;
};
cookie_read = function (name) {
var nameEQ = name + "=",
ca = document.cookie.split(';'),
len = ca.length,
i, c;
for(i = 0; i < len; ++i) {
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);
}
nameEQ = name = ca = i = c = len = null;
return null;
};
cookie_erase = function (name){
cookie_create(name,"",-1);
name = null;
};

You could use document.cookie to read/write cookies in javascript:
document.cookie = 'mycookie=' + randomNumber + '; path=/';
And if you wanted the cookie to be persistent even after the user closing his browser you could specify an expires date.