我正在使用jQuery，JavaScript的，PHP在Ubuntu平台。在该页面中，我通过jQuery的发送一个Ajax请求的PHP文件，并得到响应文本。该方案是在Windows的（WAMP）平台和网上成功运行。 但在Ubuntu我收到JavaScript错误。在code如下...

I am working with jquery, javascript, php in Ubuntu Platform. In the page i am sending an ajax request through jquery to php file and getting response text. This program was running successfully in windows-(wamp) platform and online. But in Ubuntu i am getting javascript error. The code follows...

    url = "index.php";

    $.get(url,{
            'action': 'Loan',
        },
        function(responseText){     
            alert(responseText);
        },
        "html"
    );

在Ubuntu的我得到这个错误， 未捕获的Ref​​erenceError：$没有定义。此错误显示为$不用彷徨线。在脚本标记我包括jQuery库文件了。我不知道这是为什么错误来了。请解决我的问题。在此先感谢。

In Ubuntu i am getting this error, "Uncaught ReferenceError: $ is not defined". This error was showing at $.get line. In the script tag i included jquery library file too. I dont know why this is error is coming. Please solve my issue. Thanks in Advance.

推荐答案

$没有定义 jQuery的手段jQuery库未加载。

$ is not defined on JQuery means the JQuery library is not loaded.

它可以发生的原因有很多，例如，

It can happen due to many reasons such as,

我建议你使用JQuery来自谷歌。

I suggest you use JQuery from google.

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js">
</script>