How would I go about this? (Chrome extension)

Question

I'm new to creating extensions, and I'm trying to become more comfortable with them. Basically, I'm trying to create a simple extension that does the following:

Open a new window (achieved).
Have the ability to 'click' a button from the extension (not achieved).

I'm not sure how to approach having the extension click the button in a new window. How can I approach this? This is what I have right now:

popup.html

<html>
        <body>
                <input type="button" id="the_button" value="My button"></input>
        </body>
        <script src="popup.js"></script>
</html>

popup.js

document.getElementById("the_button").addEventListener("click", function() {
    var win = window.open("http://www.roblox.com", "roblox", 400, 400)
    //Now what can I do to externally click buttons?
})

manifest.json

{
  "manifest_version": 2,
  "name": "Test",
  "description": "Test Extension",
  "version": "1.0",

  "icons": { 
    "48": "icon.png"
   },

  "permissions": [
    "http://*/*", 
    "https://*/*"
  ],

  "content_scripts": [{
    "matches": ["http://*/*", "http://*/*"],
    "js": ["jquery.js", "popup.js"]
  }],

  "browser_action": {
    "default_title": "This is a test",
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  }
}

Answer 1

First of all, you're making a mistake using the </input> closing tag: <input> tags don't need to be closed! So change your popup.html into this:

<html>
    <body>
        <input type="button" id="the_button" value="My button">
    </body>
    <script src="popup.js"></script>
</html>

Now, getting to the real question:

You need to create a new tab, then inject a content script into the page. Here is a quick solution:

Add the tabs permission to your manifest.json :
```
 ... "permissions": [ "*://*/*", // this will match both http and https :) "tabs" ], ... 
```
Remove the popup.js content script from the manifest , that's useless! You don't need it.
```
 ... "content_scripts": [{ // remove! "matches": ["http://*/*", "http://*/*"], // remove! "js": ["jquery.js", "popup.js"] // remove! }], // remove! ... 
```
WARNING : When I say remove I mean trurly remove that lines from your manifest.json , do not use comments ( // ) and do not copy and paste my code over your code, just delete that four lines.

Now, in your popup.js you can inject a content script inside your page when you open the tab, like this:

 document.getElementById("the_button").addEventListener("click", function() { chrome.tabs.open({url:"http://www.roblox.com", active:"true"}, function(tab) { chrome.tabs.executeScript(tab.id, {file:"click_the_button.js", run_at: "document_end"}); // here is where you inject the content script ^^ } });

This will create a new tab and inject inside it the script click_the_button.js , the one you will use to click the button inside the page (when it's loaded), whose code would be:
```
 var thing = $("a#roblox-confirm-btn"); thing.click(); 
```

NOTE: if you want to use jQuery in your click_the_button.js script, you can as well inject it in the tab before it:

document.getElementById("the_button").addEventListener("click", function() {
    chrome.tabs.open({url:"http://www.roblox.com", active:"true"}, function(tab) {
        chrome.tabs.executeScript(tab.id, {file:"jQuery.js", run_at: "document_start"});
        chrome.tabs.executeScript(tab.id, {file:"click_the_button.js", run_at: "document_end"});
    }
});

Resources you may find useful:

Answer 2

You need tabs permission. I had the same problem before. The answer is here:

Chrome extension; open a link from popup.html in a new tab

How would I go about this? (Chrome extension)

Question

2 answers

solution1
1 ACCPTED 2014-10-12 10:01:41

solution2
-1 2014-10-12 02:05:20

How would I go about this? (Chrome extension)

Question

2 answers

solution1 1 ACCPTED 2014-10-12 10:01:41

solution2 -1 2014-10-12 02:05:20

solution1
1 ACCPTED 2014-10-12 10:01:41

solution2
-1 2014-10-12 02:05:20