jQuery设置cookie首次访问 [英] jQuery set cookie for first visit

问题描述

我有一个类似的脚本（我使用 jQuery cookie js 设置Cookie ）在首次访问时显示图层。

I got a script like that (I use jQuery cookie js to set cookies) to display layer on first visit.

<script type="text/javascript">
    $(document).ready(function() {
        var visited = $.cookie('visited', 'yes', { expires: 1, path: '/' });

        if (visited == null) {
            $('.newsletter_layer').show();
            $.cookie('visited', 'yes'); 
            alert($.cookie("visited"));         
        }
    });
</script>

不幸的是有些东西不工作。我认为if语句错误。

Unfortunatelly something is not working. I think something is wrong with the if statement. Anyone have idea what can be wrong?

推荐答案

因为你创建的cookie，它永远不会为null。你需要改变你的逻辑，首先检查是否存在cookie。如果没有，请显示 .newsletter_layer 元素，然后设置cookie值：

Because you are creating the cookie, it will never be null. You need to change your logic to first check if the cookie exists. If not, show the .newsletter_layer element, then set the cookie value:

<script type="text/javascript">
    $(document).ready(function() {
        // check cookie
        var visited = $.cookie("visited")

        if (visited == null) {
            $('.newsletter_layer').show();
            alert($.cookie("visited"));         
        }

        // set cookie
        $.cookie('visited', 'yes', { expires: 1, path: '/' });
    });
</script>

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