如何检查浏览器的JavaScript或不启用 [英] How to check browser's JavaScript is enabled or not

问题描述

我的应用程序依赖于JavaScript，我要检查客户端浏览器的JavaScript或不启用并发出警报消息如果关闭了。

My application depends on JavaScript, I want to check the client browser's JavaScript is enabled or not and raise an alert message if its turned off.

推荐答案

有实际上是一个＆LT; NOSCRIPT＆GT; 标签，你可以用它来显示内容包含内部时的javascript不可用。

There's actually a <noscript> tag that you can use to display the content contained inside when javascript is not available.

是这样的：

<noscript>
    <div>
        You must enable javascript to continue.
    </div>
</noscript>

在div就不会显示如果他们有JavaScript和它的pretty容易分辨，如果JavaScript是工作，不管你是否需要它来ping您的服务器重新让它知道，还是用它来执行一些更高级的功能。

The div just won't show if they have javascript, and it's pretty easy to tell if javascript IS working, no matter whether you need it to ping your server back to let it know, or use it to perform some more advanced functions.

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