javascript - 禁用 cookie 时重定向

Question

我需要 JavaScript 代码来检测用户是否在浏览器中禁用了 cookie。如果他们这样做，他们将被重定向到另一个页面。如果他们启用了 cookie，它就会像往常一样直接通过。

Answer 1

您可以在浏览器中插入测试 cookie 并再次回调该 cookie。

使用这个库。它包含识别启用的 cookie、创建/读取或删除 cookie 的简单功能。

  <script type="text/javascript">
    /* function to create cookie
    @param name of the cookie
    @param value of the cookie
    @param validity of the cookie
    */
        function createCookie(name, value, days) { 
            var expires;
            if (days) {
                var date = new Date();
                date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
                expires = "; expires=" + date.toGMTString();
            }
            else expires = "";
            document.cookie = name + "=" + value + expires + "; path=/";
        }

        function readCookie(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;
        }

        function eraseCookie(name) {
            createCookie(name, "", -1);
        }
    /* 
       This function will create a new cookie and reading the same cookie. 
    */
        function areCookiesEnabled() {
            var r = false;
            createCookie("testing", "Hello", 1); //creating new cookie
            if (readCookie("testing") != null) { //reading previously created cookie
                r = true;
                eraseCookie("testing");
            }
            return r; //true if cookie enabled.
        }
    </script>

你的代码必须是。

<script>
if(!areCookiesEnabled())
{

//redirect to page
}

</script>