获取executeScript中变量集的值

时间:2012-01-04 20:14:26

标签: javascript google-chrome google-chrome-extension scope return

在创建Google Chrome扩展程序时,我的代码必须保留在单独的javascript文件中:

separate.js
-----------
var x = "some dynamic value";
var y = "another dynamic value";
return x;

我想从此代码中获取x的值到我的后台页面中包含的代码中:

background.html
-----------
<!DOCTYPE html>
<html>
  <head><script src="code.js"></script></head>
</html>

_

code.js
-----------
chrome.tabs.executeScript(null, {file:"separate.js"}, function() {});

如何在separate.js(例如,y)中检索变量集?有没有办法使用executeScript()来获取脚本的返回值?

1 个答案:

答案 0 :(得分:2)

code.js(由您的扩展程序注明)中,使用chrome.extension.sendRequest

var y = "variable to send";
function f_callback(response) {
    alert(response);
}
chrome.extension.sendRequest({y: y}, f_callback); //<-- Trigger

separate.jsbackground.html),使用chrome.extension.onRequest

function listener(o_request, o_sender, f_callback) {
    // This function is triggered by the function, see above
    alert(o_request.y); //<---y
    f_callback("Done something"); //<-- Calls callback. Can only be done once!
}
chrome.extension.onRequest.addListener(listener);