我如何检查是否用户是匿名还是从JavaScript登录？ [英] How can I check to see if the user is anonymous or logged in from javascript?

问题描述

我想确定用户是否登录，或者如果他们只是匿名在JavaScript ...

I would like to determine whether or not the user is logged in or if they're just anonymous from javascript...

我发现这个问题，但它的PHP code和我不知道是否有一个名为LOGGED_IN一个会话变量被存储在登录，如果这只是一些人已经实施了自己。

I found this question, but it's php code and I wasn't sure if there is a session variable called logged_in that gets stored on login or if that was just something that person had implemented himself.

任何人都知道我可以检查用户是否可以从JavaScript登录，可能使用AJAX？

Anyone know how I can check to see if the user is logged in from javascript, possibly using ajax?

编辑：我跑Asp.Net MVC，对不起，应该指定

I'm running Asp.Net MVC, sorry should have specified

这是为了让我可以实现客户端AJAX登录。页面加载时，我需要知道，如果用户登录或不那么我可以实现类似于＆LT东西; ASP：LoggedInView＆gt;使用jQuery的控制

This is so that I can implement a client-side ajax login. When the page loads, I need to know if the user is logged in or not so I can implement something similar to an <asp:LoggedInView> control using jquery.

谢谢，

马特

Thanks,
Matt

推荐答案

您无法读取会话从JavaScript保存的数据。

You can't read session saved data from JavaScript.

这是简单的方法来做到这一点是建立从PHP一个JS变种（比cookie的解决方案更容易），就像这样：

An easy way to do it is to create a JS var from PHP (easier than cookies solution), like this:

if ($_SESSION['logged_in'] == 1) {
    echo '<script type="text/javascript">var logged_in=true;</script>';
} else {
    echo '<script type="text/javascript">var logged_in=false;</script>';
}

然后，JS会简单地检查本机 LOGGED_IN VAR，看看用户是否登录。

Then the JS will simply check the native logged_in var to see if the user is logged in.

<script type="text/javascript">
    if (logged_in) {
        alert("My user is logged in!");
    }
</script>

这篇关于我如何检查是否用户是匿名还是从JavaScript登录？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！