js操作获取和设置cookie

最新推荐文章于 2025-10-09 08:58:10 发布

转载最新推荐文章于 2025-10-09 08:58:10 发布 · 2.6k 阅读

前端面试题专栏收录该内容

10 篇文章

订阅专栏

本文提供了三个JavaScript函数：设置、获取及删除cookie。通过这些函数，开发者可以轻松地实现客户端的cookie管理，包括有效期设置、路径指定等高级功能。

//创建cookie
function setCookie(name, value, expires, path, domain, secure) {
    var cookieText = encodeURIComponent(name) + '=' + encodeURIComponent(value);
    if (expires instanceof Date) {
        cookieText += '; expires=' + expires;
    }
    if (path) {
        cookieText += '; expires=' + expires;
    }
    if (domain) {
        cookieText += '; domain=' + domain;
    }
    if (secure) {
        cookieText += '; secure';
    }
    document.cookie = cookieText;
}

//获取cookie
function getCookie(name) {
    var cookieName = encodeURIComponent(name) + '=';
    var cookieStart = document.cookie.indexOf(cookieName);
    var cookieValue = null;
    if (cookieStart > -1) {
        var cookieEnd = document.cookie.indexOf(';', cookieStart);
        if (cookieEnd == -1) {
            cookieEnd = document.cookie.length;
        }
        cookieValue = decodeURIComponent(document.cookie.substring(cookieStart + cookieName.length, cookieEnd));
    }
    return cookieValue;
}

//删除cookie
function unsetCookie(name) {
    document.cookie = name + "= ; expires=" + new Date(0);
}