javascript check cookies exist
get cookie in jsif cookie exists javascript
//You can call the function getCookie with the name of the cookie you want, then check to see if it is = null.
function getCookie(name) {
var dc = document.cookie;
var prefix = name + "=";
var begin = dc.indexOf("; " + prefix);
if (begin == -1) {
begin = dc.indexOf(prefix);
if (begin != 0) return null;
}
else
{
begin += 2;
var end = document.cookie.indexOf(";", begin);
if (end == -1) {
end = dc.length;
}
}
// because unescape has been deprecated, replaced with decodeURI
//return unescape(dc.substring(begin + prefix.length, end));
return decodeURI(dc.substring(begin + prefix.length, end));
}
function doSomething() {
var myCookie = getCookie("MyCookie");
if (myCookie == null) {
// do cookie doesn't exist stuff;
}
else {
// do cookie exists stuff
}
}check cookie existence js
document.cookie = "hacker=anthony; SameSite=None; Secure";
function checkACookieExists() {
if (document.cookie.split(';').some((item) => item.trim().startsWith('hacker='))) {
const output = document.getElementById('a-cookie-existence')
output.textContent = '> The cookie "hacker" exists'
}
}
function clearOutputACookieExists() {
const output = document.getElementById('a-cookie-existence')
output.textContent = ''
}Copyright © 2021 Codeinu
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