我无法弄清楚如何从内容脚本传递变量（或变量数组）一个背景页。我想要做的就是找​​到一定的DOM元素与我的内容脚本，然后将它们发送给我的后台页面，这样我可以做一个跨域XMLHtt prequest与他们（它们存储在一个数据库上不同的网站）。

我的code是如下。我知道，没有被通过名为连载变量（基于我目前的code，我不希望它，但有它在那里，以便更容易地看到什么，我想要做的。）那么，怎样才能我通过从内容脚本变量为背景的网页？

我的内容脚本：

 函数onText（数据）{
警报（伟大的成功！）;
};
$（＃insertprofile）。点击（函数（）{
序列= $（certaininputs。）序列（）。
chrome.extension.sendRequest（{'动作'：'insertprofile，序列化：连载}，onText）;
}）;
 

我的背景页面：

 ＆LT;脚本＆GT;
      功能insertprofile（连载）{
        VAR XHR =新XMLHtt prequest（）;
        xhr.onreadystatechange =功能（数据）{
          如果（xhr.readyState == 4）{
            如果（xhr.status == 200）{
              VAR数据= JSON.parse（xhr.responseText）;
              回调（数据）;
            } 其他 {
              回调（空）;
            }
          }
        }
        VAR URL =（'http://mysite.com/storeindatabase.php？+连载）;
        xhr.open（GET，URL，真正的）;
        xhr.send（）;
      };
      函数onRequest（请求发送方，序列化）{
        如果（request.action =='insertprofile'）{
          insertprofile（连载）;
        }
      };
      chrome.extension.onRequest.addListener（onRequest）;
    ＆LT; / SCRIPT＆GT;
 

解决方案

你缺少... PHP？序列='+连载）这个code：

  VAR URL =（'http://mysite.com/storeindatabase.php？+连载）;
 

这应该是这样的：

  VAR URL =（'http://mysite.com/storeindatabase.php?serialize='+连载）;
 

I can't figure out how to pass a variable (or an array of variables) from a content script to a background page. What I'm trying to do is find certain DOM elements with my content script, then send them to my background page so that I can make a cross-domain XMLHttpRequest with them (store them in a database on a different site).

My code is below. I know that the variable named "serialize" is not being passed (and I don't expect it to based on my current code but have it in there so it's easier to see what I want to do.) So how can I pass a variable from a content script to a background page?

My Content Script:

function onText(data) {
alert("Great Success!!");
};
$("#insertprofile").click(function(){
serialize = $(".certaininputs").serialize();
chrome.extension.sendRequest({'action' : 'insertprofile', 'serialize' : serialize}, onText);
});

My Background Page:

   <script>
      function insertprofile(serialize) {
        var xhr = new XMLHttpRequest();
        xhr.onreadystatechange = function(data) {
          if (xhr.readyState == 4) {
            if (xhr.status == 200) {
              var data = JSON.parse(xhr.responseText);
              callback(data);
            } else {
              callback(null);
            }
          }
        }
        var url = ('http://mysite.com/storeindatabase.php?' + serialize);
        xhr.open('GET', url, true);
        xhr.send();
      };
      function onRequest(request, sender, serialize) {
        if (request.action == 'insertprofile') {
          insertprofile(serialize);
        }
      };
      chrome.extension.onRequest.addListener(onRequest);
    </script>

Did you missing "...php?serialize=' + serialize)" on this code:

var url = ('http://mysite.com/storeindatabase.php?' + serialize);

It's should be like this:

var url = ('http://mysite.com/storeindatabase.php?serialize=' + serialize);