getcookie value javascript code example
Example 1: javascript create cookie
function setCookie(name,value,days) {
var expires = "";
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days*24*60*60*1000));
expires = "; expires=" + date.toUTCString();
}
document.cookie = name + "=" + (value || "") + expires + "; path=/";
}
function getCookie(name) {
var nameEQ = name + "=";
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,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
setCookie("user_email","[email protected]",30);
var userEmail=getCookie("user_email");
Example 2: document get cookie
function setCookie(cname, cvalue, exdays = 999) {
const d = new Date();
d.setTime(d.getTime() + exdays * 24 * 60 * 60 * 1000);
const expires = 'expires=' + d.toUTCString();
document.cookie = cname + '=' + cvalue + ';' + expires + ';path=/';
}
function getCookie(cname) {
const cookies = Object.fromEntries(
document.cookie.split(/; /).map(c => {
const [key, v] = c.split('=', 2);
return [key, decodeURIComponent(v)];
}),
);
return cookies[cname] || '';
}
setCookie('language', 'vietnam', 365);
var userEmail = getCookie('language');
Example 3: set and get cookie in javascript
For storing array inside cookie :
-----------------------------------
setter : var json_str = JSON.stringify(arr); cookie.set('mycookie', json_str);
getter : cookie.get('mycookie'); var arr = JSON.parse(json_str);
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Function common for all type of variable :
==========================================
let cookie = {
set: function(name, value) {
document.cookie = name+"="+value;
},
get: function(name) {
let nameEQ = name + "=";
let ca = document.cookie.split(';');
for( let i = 0; i < ca.length; i++ ) {
let 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);
}
return null;
}
}