Chrome Extender Gets the current page URL and HTML content

Let's start with the configuration in Manifest.json.

Introducing Injection Scripts
"Content_scripts": [
  {
    "JS": ["Content_script.js"],
    Under what circumstances the script is used
    "Matches": [
      "Http://*/*",
      "Https://*/*"
    ],
    When to run the "Document loading start"
    "Run_at": "Document_start"
  }
],

{
"Permissions": [  "Tabs"]
}

1. Get the URL of the current page

can be obtained in popup.js (Chrome.tabs.getCurrent already out, return value is undefined)

    Chrome.tabs.getSelected (nullfunction  (tab) {        console.log (tab.url);     });

2. Get the HTML content of the current page

Content-script.js is the script that is injected into the tab page Popup.js is the way the PopOver script communicates with each other SendMessage(msg, callback), Onmeassage(callback) (SendRequest, ONrequest is out, API is no longer supported) Popup.js: Send Message

chrome.tabs.getSelected (NULL, Function (tab) {//) get the tabid of the current page first
    Chrome.tabs.sendMessage (tab.id, {greeting: "Hello"}, Function (response) {
        Console.log (response); Send request information to Content-script.js
    });
});

Content-script.js: Response message

   var html = Document.body.innerHTML;    Chrome.extension.onMessage.addListener (        function(request, sender, SendMessage) {if (request.greeting = = "Hello")                sendMessage (HTML)            ; Else                 sendMessage (//  snub them.        });

Chrome Extender Gets the current page URL and HTML content