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No errors , but no output in console from chrome extension

I'm trying to build an extension to monitor the xhr portion of the devtools network tab. I decided to start as simple as possible with the background script below. I'm seeing no errors on loading the extension, but don't see any output in the console.
manifest.json:
{
"manifest_version": 3,
"version": "1.0",
"name": "Hello World!",
"description": "Learning how to make a chrome extension!",
"icons": {
"16": "images/puppy16.png",
"48": "images/puppy48.png",
"128": "images/puppy128.png"
},
"action": {
"default_icon": "images/puppy.png",
"default_popup": "popup.html"
},
"background": {
"service_worker": "background.js"
},
"host_permissions": [
"https://yahoo.com/*"
],
"permissions": [
"webRequest"
]
}
In my background.js:
(function () {
chrome.webRequest.onCompleted.addListener(
function (details) {
console.log('HELLO THERE!!!!', details);
},
{ urls: ["<all_urls>"] }
);
}());
What am I doing wrong?

The background-page and webpage console log to different places so you wouldn't see console.log('HELLO THERE!!!!', details); in the webpage's console. Refer the answer below for how to view the background-page console.
Accessing console and devtools of extension's background.js

How do I make a button that executes the background.js in a chrome extension?

I am making a chrome extension. Here is the code:
Manifest.json:
{
"name": "My name!",
"version": "2.0",
"description": "Blocks ads",
"permissions": ["webRequest", "webRequestBlocking", "<all_urls>"],
"browser_action": {
"default_icon": "shield.ico",
"default_popup": "popup.html",
"default_title": "Ad be gone"
},
"background": {
"scripts": ["background.js"]
},
"manifest_version": 2
}
background.js:
chrome.webRequest.onBeforeRequest.addListener(
function(details) { return {cancel: true}; },
{ urls: ["*://*.doubleclick.net/*", "*://*.ads.google.com/*",] },
["blocking"]
);
How would I make a button in popup.html that turns on and off the background.js and alerts the user that it is doing so? I basically want to make a button that turns on and off the ad blocker.

How to read all http requests in Chrome Extension?

I want my Chrome Extension to read and display all http requests in alerts. But alerts are not displaying, console is clear with no errors. Here is my code:
chrome.webRequest.onBeforeRequest.addListener(
function(details) {
alert(JSON.stringify(details));
},
{urls: ["<all_urls>"]},
["blocking", "requestBody"]
);
Also my manifest:
{
"manifest_version": 2,
"name": "Some_Name",
"version": "1.2",
"content_scripts": [{"matches": ["<all_urls>","http://*/*", "https://*/*"],"js": ["background.js"]}],
"background": {
"page": "background.html"
},
"permissions": [
"alarms",
"webRequest",
"webRequestBlocking"
],
"browser_action": {
"default_title": "Some extension"
},
"icons": {
"128": "icon.png" }
}

Chrome Extension: How do I get me Content Script Extension to show up on select websites

I would like my Chrome Extension to on show up on google and amazon. My manifest.json looks like this:
{
"background": {"scripts": ["background.js"]},
"content_scripts": [
{
"matches": ["*://*.google.com/*", "http://www.amazon.com/*", "*://*.amazon.com/*"],
"js": ["background.js"]
}
],
"name": "Denver Public Library Lookup",
"description": "Does Stuff",
"homepage_url": "http://www.artifacting.com",
"icons": {
"16": "icon-16.png",
"48": "icon-48.png",
"128": "icon-128.png" },
"permissions": [
"tabs",
"http://*/*",
"https://*/*"
],
"version": "1.0",
"manifest_version": 2
}
But it doesn't show up on either google or amazon and I can't figure out why.
Here is my background.js
chrome.browserAction.onClicked.addListener(function(tab) {
chrome.tabs.executeScript(tab.id, {file: "bookmarklet.js"})
});
And here is the bookmarlet.js
setTimeout('x99.focus()', 300);
var re = /([\/-]|at[at]n=)/i;
if (re.test(location.href) == true) {
var isbn = RegExp.$2;
var x99 = window.open('http://searchsite/search/searchresults.aspx?ctx=1.1033.0.0.6&type=Keyword&term=' + atatn, 'Library', 'scrollbars=1,resizable=1,top=0,left=0,location=1,width=800,height=600');
x99.focus();
}
Any ideas? Thanks for your help.

Many mistakes in the code.
You don't need content script here, all operations could be executed
within background page content
It it hard to make background page
code works within content script, this is definitely not a your case.
So using the same background.js as both background and content script
does not work in your case at least
Manifest does not declare browser
action.
And so on
I strongly suggest to start with Google extension documentation. You will save a lot of your time.
How I think files might look like
manifest.json
{
"background": {"scripts": ["background.js"]},
"name": "Denver Public Library Lookup",
"description": "Does Stuff",
"homepage_url": "http://www.artifacting.com",
"icons": {
"16": "icon-16.png",
"48": "icon-48.png",
"128": "icon-128.png" },
"browser_action": {
"default_icon": {
"19": "images/icon-19.png",
"38": "images/icon-38.png"
},
"default_title": "Do Staff" // optional; shown in tooltip
},
"permissions": [
"tabs",
"http://*/*",
"https://*/*"
],
"version": "1.0",
"manifest_version": 2
}
background.js
chrome.browserAction.onClicked.addListener(function(tab) {
// You need more sothisticated regexp here which checks for amazon and google domains
var re = /([\/-]|at[at]n=)/i;
if (re.test(tab.url)) {
var isbn = RegExp.$2;
var url = "http://searchsite/search/searchresults.aspx?ctx=1.1033.0.0.6&type=Keyword&term=" + isbn;
chrome.windows.create({
url : url,
left: 0,
top: 0,
width: 800,
height: 600,
focused: true,
type: "popup"
});
}
});
bookmarlet.js is not needed

Open extension page in new tab

So I'm trying to make an extension that on click opens a tab and goes to a page. The only thing I can make it do so far is open a tab and give me this error:
No webpage was found for the web address:
chrome-extension://hgjkkhjinhilcehaaldcnopaefinlfif/https://www.google.com/
Here is the manifest.json:
{
"name": "New App",
"version": "0.1",
"permissions": ["tabs"],
"manifest_version": 2,
"browser_action": {
"default_icon": "icon.png"
},
"background": {
"scripts": ["background.js"]
},
"icons": {
"48": "icon.png"
}
}
Here is background.js
chrome.browserAction.onClicked.addListener
(function(tab)
{chrome.tabs.create({'url': chrome.extension.getURL('https://www.google.com/')}, function(tab) {})
}
)

What I was trying to do was open a new tab and go to a website in the browser action. Here is the answer:
Manifest.json
{ "name": "Funny Pictures",
"version": "0.1",
"manifest_version": 2,
"description": "Rick Roll all your friends!",
"browser_action": {
"default_icon": "funnyface.png"
},
"icons": {
"48": "funnyface.png"
},
"background":{
"scripts": ["background.js"]
}
}
background.js
chrome.browserAction.onClicked.addListener(function(activeTab) {
var newURL = "http://www.youtube.com/watch?v=oHg5SJYRHA0";
chrome.tabs.create({ url: newURL });
});
I swear I tried this previously, but that's how it goes I guess.