js intro 1

CODE: Manifest.json
{
    "manifest_version": 2,
    "name": "Facebook Filler",
    "description": "Facebook Filler",
    "homepage_url": "http://www.facebook.com​",
    "version": "1.0",
    "browser_action": {
        "default_title": "Click me",
        "default_popup": "index.html",
  "default_icon": "icon.png"
    },
    "permissions": [
        "tabs",
        "http://*/*​",
        "https://*/*​"
    ]
}

CODE: index.html
{
    "manifest_version": 2,
    "name": "Facebook Filler",
    "description": "Facebook Filler",
    "homepage_url": "http://www.facebook.com​",
    "version": "1.0",
    "browser_action": {
        "default_title": "Click me",
        "default_popup": "index.html",
  "default_icon": "icon.png"
    },
    "permissions": [
        "tabs",
        "http://*/*​",
        "https://*/*​"
    ]
}


CODE: action.js
document.getElementById('fillForm').addEventListener('click', function(){
  chrome.tabs.executeScript({
    file: "injector.js"
  });
});

CODE: injector.js
document.getElementById('email').value = "testman@thatplace.com";
document.getElementById('pass').value = "mypassword";
var chkboxes = document.getElementById("email").value;
alert(chkboxes);