从Chrome扩展程序注入后运行脚本

Question

I'm trying to inject a script into the webpage when a button in the extension option menu is clicked. Injection -

document.getElementById("button_").addEventListener("click", function(){
  alert("Injecting") ;
  chrome.tabs.executeScript({
          file: 'script.js'
        });
});

However the function that I'm trying to run in script.js , foo() is not running. I'm trying to run it via-

window.onload= function(){
  foo() ;
}

However this does not work . How do I get foo() to run?

Note- It has to run as an injected script

Answer 1

可以使用清单文件中的“ content_scripts”属性，而不是使用侦听器并在单击时运行“ chrome.tabs.executeScript”，并在脚本内部创建一个将运行您的函数的侦听器。

Answer 2

将消息从后台脚本发送到内容脚本，然后再发送到注入脚本，这为处理内容脚本以及与它们进行通信提供了很好的指导。