正如 Jordan 已经说过的，您必须先将 javascript 变量回发到服务器，然后服务器才能处理该值.为此，您可以编写一个提交表单的 javascript 函数 - 或者您可以使用 ajax/jquery.jQuery.post

As Jordan already said you have to post back the javascript variable to your server before the server can handle the value. To do this you can either program a javascript function that submits a form - or you can use ajax / jquery. jQuery.post

也许对你来说最简单的方法是这样的

Maybe the most easiest approach for you is something like this

function myJavascriptFunction() { 
  var javascriptVariable = "John";
  window.location.href = "myphpfile.php?name=" + javascriptVariable; 
}

在您的 myphpfile.php 上，您可以在执行 javascript 后使用 $_GET['name'].

On your myphpfile.php you can use $_GET['name'] after your javascript was executed.

问候