Javascript 如何检查用户是否接受cookie

使用java脚本，如何检查用户是否接受域的cookies。

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YUI是否有任何此类组件要检查？

库：

<script type="text/javascript">
    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);
    }

    function areCookiesEnabled() {
        var r = false;
        createCookie("testing", "Hello", 1);
        if (readCookie("testing") != null) {
            r = true;
            eraseCookie("testing");
        }
        return r;
    }
</script>

<script type="text/javascript">
    alert(areCookiesEnabled());
</script>

函数createCookie（名称、值、天数）{
var到期；
如果（天）{
变量日期=新日期（）；
date.setTime（date.getTime（）+（天*24*60*60*1000））；
expires=“；expires=“+date.togmString（）；
}
else expires=“”；
document.cookie=name+“=”+value+expires+“path=/”；
}
函数readCookie（名称）{
变量nameEQ=name+“=”；
var ca=document.cookie.split（“；”）；
对于（变量i=0；i

要运行的代码：

<script type="text/javascript">
    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);
    }

    function areCookiesEnabled() {
        var r = false;
        createCookie("testing", "Hello", 1);
        if (readCookie("testing") != null) {
            r = true;
            eraseCookie("testing");
        }
        return r;
    }
</script>

<script type="text/javascript">
    alert(areCookiesEnabled());
</script>

警报（areCookiesEnabled（））；

记住：

<script type="text/javascript">
    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);
    }

    function areCookiesEnabled() {
        var r = false;
        createCookie("testing", "Hello", 1);
        if (readCookie("testing") != null) {
            r = true;
            eraseCookie("testing");
        }
        return r;
    }
</script>

<script type="text/javascript">
    alert(areCookiesEnabled());
</script>

这仅在允许运行Javascript时有效

积分：

<script type="text/javascript">
    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);
    }

    function areCookiesEnabled() {
        var r = false;
        createCookie("testing", "Hello", 1);
        if (readCookie("testing") != null) {
            r = true;
            eraseCookie("testing");
        }
        return r;
    }
</script>

<script type="text/javascript">
    alert(areCookiesEnabled());
</script>

---

这是我的邮件。原始作者是。

不错，但我会将cookie设置为会话cookie，而不是让它在一天内过期。例如，如果我在访问网站后停用cookie，然后重新访问它，它将不起作用：派斯，听起来很合理。但这只是一个参考。你可以把它改成你认为适合你的任何东西