Question

我在浏览器中运行hello.html页面，当我按下submit按钮时，它应该发布一条消息，该消息将在我的chrome devtools扩展中接收并显示在控制台中。但它没有用。

的manifest.json

{
  "name": "Network Data",
  "version": "1.0.2",
  "manifest_version": 2,
  "description": "Adds ColdFire support.",
  "devtools_page": "devtools.html",
  "permissions": [
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
   "content_scripts": [{
    "matches": ["http://*/*","https://*/*"],
    "js": ["contentscript.js"],
    "run_at": "document_start"
  }]
}

hello.html的

<html>
<body>
  <button id="mybutton">click me</button>
 </body>
  <script>
   document.getElementById("mybutton").addEventListener("click", function() {
        window.postMessage({ type: "FROM_PAGE", text: "Hello from the webpage!" }, "*");
        alert('button clicked');
}, false);

  </script>
</html>

contentscript.js

var port = chrome.runtime.connect();

chrome.runtime.onMessage.addListener("message", function(event) {
        // We only accept messages from ourselves
        if (event.source != window)
            return;

        if (event.data.type && (event.data.type == "FROM_PAGE")) {
            console.log("Content script received: " + event.data.text);
            port.postMessage(event.data.text);
        }
}, false);

嵌入页面之间的通信和Chrome扩展程序

0 个答案: