Set and get cookies function in JavaScript

set-and-get-cookies.js

/**
 * @param {string} cname - Cookie name
 * @param {string} cvalue - Cookie value
 * @param {int} exdays - Cookie expiration time in days
 */
function setCookie(cname, cvalue, exdays) {
    var d = new Date();
    d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
    var path = "path=/",
        expires = "expires=" + d.toUTCString();
    document.cookie = cname + "=" + cvalue + "; " + path + ";" + expires;
}

/**
 * @param string [cname] - Cookie name
 */
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) == 0) return c.substring(name.length, c.length);
    }
    return "";
}