Can't get chrome extension to get innerText when loading - javascript

I am building my first chrome extension and want to read the entire text in the website whenever a new tab is loaded. Everything works with a button, but I can't trigger it automatically.
Here's what I have in my popup.js
let getWords = document.getElementById("getWords");
// When the button is clicked, inject getPageText into current page
getWords.addEventListener("click", async () => {
let [tab] = await chrome.tabs.query({ active: true, currentWindow: true });
chrome.scripting.executeScript({
target: { tabId: tab.id },
func: getPageText,
});
});
chrome.tabs.onUpdated.addListener(function(tab) {
chrome.tabs.executeScript({
target: { tabId: tab.id },
func: getPageText,
});
});
// The body of this function will be executed as a content script inside the
// current page
function getPageText() {
let websiteWords = document.body.innerText;
console.log(websiteWords);
}
My popup.html
<html>
<head>
<link rel="stylesheet" href="assets/css/layout.css" />
<link rel="stylesheet" href="assets/css/ui.css" />
</head>
<body>
BODY
</body>
<button id="getWords">Words</button>
<script src="popup.js"></script>
</html>
on my background.js I tried this but it doesn't work:
chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab){
if(changeInfo.status === "complete"){
console.log("loaded....")
}
});
function getPageText() {
let websiteWords = document.body.innerText;
console.log(websiteWords);
}
Finally my manifest.json
"manifest_version": 3,
"permissions": [
"activeTab",
"webNavigation",
"storage",
"scripting"
],
"host_permissions": [
"https://*/*"
],
"background": {
"service_worker": "background.js",
"type": "module"
},
"action": {
"default_popup": "popup.html"
},

I think you should use content_scripts.
manifest.json
{
"name": "hoge",
"version": "1.0",
"manifest_version": 3,
"content_scripts": [
{
"matches": [
"<all_urls>"
],
"js": [
"matches.js"
]
}
]
}
matches.js
function getPageText() {
let websiteWords = document.body.innerText;
console.log(websiteWords);
}
getPageText();

Related

How to start google extension on tab switch

I have made a simple extension that checks if a URL is on a list. If it is the extension icon changes color for 2 seconds.
I would like it to automatically switch the icon color on tab switch instead of me having to click the extension icon.
This is my current code :
var good_urls = \["https://www.google.com/%22,%22https://www.youtube.com"\];
var currentURL
chrome.tabs.query({'active': true, 'windowId': chrome.windows.WINDOW_ID_CURRENT},
function(tabs){
getCurrentURL(tabs\[0\].url);
updateIcon();
});
function getCurrentURL(tab){
currentURL = tab;
console.log(currentURL);
}
function updateIcon(){
if(good_urls.indexOf(currentURL) >= 0) {
console.log("good");
chrome.action.setIcon({path: "icon-on-list.png"});
console.log("1")
setTimeout(() => { chrome.action.setIcon({path: "neutral.png"}); }, 1000);
}
else {
chrome.action.setIcon({path: "icon.png"});
console.log("3")
setTimeout(() => { chrome.action.setIcon({path: "neutral.png"}); }, 1000);
};
}
+HTML that activates the script
<html>
<head>
</head>
<body>
<script src="background.js"></script>
</body>
</html>
+Manifest
{
"manifest_version": 3,
"name": "Icon Changer",
"version": "1.0",
"background": {
"service_worker": "background.js"
},
"permissions": [
"tabs",
"activeTab",
"declarativeContent",
"storage"
],
"action": {
"default_icon": "neutral.png",
"default_popup": "popup.html"
}
}
I have no clue how to make the script start automatically.
I am sure its super simple, I am new to making chrome extensions. Thank you for your help.
This is a sample of chrome.tabs.onActivated.
manifest.json
{
"name": "hoge",
"version": "1.0",
"manifest_version": 3,
"permissions": [
"tabs"
],
"background": {
"service_worker": "background.js"
}
}
background.js
console.log("background.js");
chrome.tabs.onActivated.addListener((activeInfo) => {
chrome.tabs.get(activeInfo.tabId, (tab) => {
console.log(tab.url);
});
});

Javascript: Browser Extension navigate.clipboard.write() not working in content.js

In my extension I have a button in a popup.js file that runs a listener for a button press and sends a command to a content.js file.
document.querySelector('#btn').addEventListener('click', () => {
chrome.tabs.query({ active: true, currentWindow: true }, (tabs) =>
chrome.tabs.sendMessage(tabs[0].id, { command: 'getClientName' })
);
});
My content.js file is a little involved and grabs some information off the page to copy to the clipbaord, but for purposes of my problem I just need a listener to wait for the command "getClientName" then save a value to the clipboard like below.
chrome.runtime.onMessage.addListener((msg, sender, response) => {
navigator.clipboard.writeText("I did it 2!")
.then(() => {alert("I did it 2!");
})
.catch(() => {
alert("I didn't it 2");
})
});
However, I cannot get navigator.clipboard.writeText() to work from the content.js page. It will only work if I run it directly from popup.js, which doesn't really work since I need to pull information off the page.
Right now it gets sent to .catch() and sends me the error message.
Manifest (replaced the actual URL in my manifest with "all" for privacy reasons):
{
"manifest_version": 3,
"name": "The Magic Button",
"version": "1.0.0",
"description": "Open P.P. client folder in sharepoint",
"action": {
"default_icon": {
"16": "/images/logo16.png",
"48": "/images/logo48.png",
"64": "/images/logo64.png",
"128": "/images/logo64.png"
},
"default_popup": "popup.html",
"default_title": "Open Sharepoint Folder"
},
"permissions": ["tabs",
"clipboardWrite"],
"content_scripts": [
{
"matches": [all],
"js": ["content.js"],
"css": ["/styles/contentStyle.css"],
"run_at": "document_idle",
"all_frames": false
}
]
}
This sample copies the web page title to the clipboard.
manifest.json
{
"name": "hoge",
"version": "1.0",
"manifest_version": 3,
"permissions": [
"scripting"
],
"host_permissions": [
"<all_urls>"
],
"action": {
"default_popup": "popup.html"
}
}
popup.html
<html>
<body>
<button id="copy">Copy</button>
<script src="popup.js"></script>
</body>
</html>
popup.js
const getTitle = () => {
console.log("getTitle() = " + document.title);
return document.title;
}
document.getElementById("copy").onclick = () => {
chrome.tabs.query({ active: true, currentWindow: true }, (tabs) => {
console.log("Execute Script");
chrome.scripting.executeScript({
target: { tabId: tabs[0].id },
func: getTitle
}, (result) => {
console.log("Recv result = " + result[0].result);
navigator.clipboard.writeText(result[0].result);
});
});
}

Edge extension to rename tab title not working

I am trying to write an Edge extension that changes the title of a tab.
Here is what I've tried but it doesn't seem to change the tab's title.
When I add alert(tab.title) it does seem like it has changed.
Manifest.json
{
"name": "My Tab",
"version": "2.0.0",
"description": "Simple Microsoft Edge Extension",
"manifest_version": 2,
"author": "abc",
"browser_action": {
"default_popup": "bg.html",
"default_title": "Hello World"
},
"permissions": [
"tabs",
"<all_urls>"
],
"background": {
"page": "bg.html",
"persistent": true
}
}
bg.html
<!DOCTYPE html>
<html>
<head>
<title>demo</title>
</head>
<body>
<div>
<h3>Click the button to get the page URL...<h3><br>
<button id="btn1">click me</button>
<input type="text" id="txt1" style="width:300px">
</div>
<script type="text/javascript" src="background.js"></script>
</body>
</html>
background.js
var btn= document.getElementById("btn1");
btn.addEventListener("click", function(){
abc();
});
function abc()
{
chrome.tabs.query({active: true, lastFocusedWindow: true}, function(tabs)
{
var tab = tabs[0];
var title = document.getElementById("txt1").value;
tabs[0].title = title;
tab.reload();
});
}
Any idea?
Here's how I change the tab's title. It involves a content script. Also, I used sendMessage in background.js to pass the title into content script. Don't forget to add the content script to your manifest.json.
content.js
chrome.runtime.onMessage.addListener(function(request, sender, sendResponse)
{
if (request.title)
{
document.title = request.title;
}
})
background.js
var btn = document.getElementById("btn1");
btn.addEventListener("click", function(){
abc();
});
function abc()
{
chrome.tabs.query({active: true, lastFocusedWindow: true}, function(tabs)
{
var tab = tabs[0];
var title = document.getElementById("txt1").value;
chrome.tabs.sendMessage(tabs[0].id, {title: title}, function(response){});
});
}
manifest.json
{
"name": "My Tab",
"version": "2.0.0",
"description": "Simple Microsoft Edge Extension",
"manifest_version": 2,
"author": "abc",
"browser_action": {
"default_popup": "bg.html",
"default_title": "Hello World"
},
"content_scripts": [
{
"matches": ["<all_urls>"],
"js": ["content.js"]
}
],
"permissions": [
"tabs",
"<all_urls>"
],
"background": {
"page": "bg.html",
"persistent": true
}
}

I want to do message passing from web page to chrome extension html but seems no response is coming. Here is the code

Below is the code m trying but getting response null in popup. I want to do message passing from web page to chrome extension html .
mainfest.json
{
"manifest_version": 2,
"name": "AnyName",
"description": "A simple extension for Chrome",
"version": "1.0",
"author": "#aag",
"background": {"scripts": ["background.js"]},
"permissions":[
"tabs", "http://*/*", "activeTab", "storage", "ftp://*/*", "<all_urls>", "clipboardWrite", "contentSettings", "cookies", "history"
],
"page_action": {
"default_icon": "logo.png" ,
"default_popup": "popup.html"
},
"content_scripts": [
{
"matches": ["*://*/show_bug.cgi?id/*"],
"js": ["content.js"],
"run_at": "document_start"
}]
}
popup.html
<!doctype html>
<html>
<head>
<title>Extension</title>
<script src="popup.js"></script>
<script src="jquery.js"></script>
</head>
<body>
<h3>Whiteboard!!</h1>
<p id='pagetitle'>Page is still Loading..</p>
<p id='reported'>Date is still Loading..</p>
</body>
</html>
popup.js
document.addEventListener('DOMContentLoaded', function() {
prepareSummary();
});
function prepareSummary() {
chrome.tabs.getSelected(null, function(tab) {
chrome.tabs.sendRequest(tab.id, {
action: "getSummary"
}, function(response) {
if (response == null) {
alert('no respose');
} else {
var wbVar = response.wb;
var rdateVar = response.rd;
document.getElementById('pagetitle').innerHTML = wbVar;
document.getElementById('reported').innerHTML =rdateVar ;
}
});
});
}
content.js
chrome.extension.onRequest.addListener(function(request, sender, sendResponse) {
if (request.action == "getSummary") {
var wbVar = document.getElementById('status_whiteboard').value;
var rdateVar = document.getElementsByClassName("bz_comment_time")[0].innerText;
sendResponse({
wb: wbVar,
rd: rdateVar,
resp: "Test"
});
} else
sendResponse({
resp: "Nothing"
});
});
background.js
chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab) {
var url = tab.url;
if (isUrl(url)) {
chrome.pageAction.show(tab.id);
}
});
function isUrl(url) {
if (url.includes('show_bug.cgi?id'))
return true;
else
return false;
}
The main issue is i am not able to get the string coming on webpage. After fetching from webpage i need to show on extension popup.html

Messages not exchanged between content scripts, background.js and popup.js

I am trying to make a google-chrome extension which fetches selected text from the webpage and displays it in the popup. I've read google-chrome docs and have followed many questions but I have been unable to resolve this issue. Selected text cannot be sent to background.js and furthur to popup.js.
manifest.json:
{
"name": "Wordomania",
"version": "1.0",
"manifest_version": 2,
"description": "Displays word on popup",
"icons": {
"16": "images/W.png"
},
"background": {
"scripts": [
"jquery-3.3.1.js",
"background.js"
],
"persistent": false
},
"content_scripts": [
{
"matches": [
"http://*/*",
"https://*/*"
],
"js": ["content.js"]
}
],
"permissions": [
"background",
"tabs",
"http://*/*",
"https://*/*",
"activeTab"
],
"browser_action": {
"default_icon": "images/W.png",
"default_title": "Wordomania"
}
}
background.js :
chrome.browserAction.onClicked.addListener(function (tab) {
console.log('Extension button clicked');
chrome.tabs.sendMessage(tab[0].id, {
action: 'sendWord'
}, function (wordObject) {
console.log('Word received');
let obj = {
word: wordObject.word,
from: 'back'
};
chrome.runtime.sendMessage(obj, function (status) {
console.log(status);
});
});
});
content.js :
function getSelectionText() {
let text = "";
if (window.getSelection) {
text = window.getSelection().toString();
} else if (document.selection && document.selection.type !== 'Control') {
text = document.selection.createRange().text;
}
return text;
}
chrome.runtime.onMessage.addListener(function (message, sender, sendResponse) {
if (message.action === 'sendWord') {
let text = getSelectionText();
sendResponse({word: text});
}
});
popup.html :
<!DOCTYPE html>
<html>
<head>
<title>Wordomania</title>
<script src="popup.js"></script>
</head>
<body>
<h1><p id="word"></p></h1>
<div id="body-of-popup"></div>
</body>
</html>
Help required!
Basically, you will need to do a few changes in your approach. Since, we can have only one event at a time assoiciated with the browserAction either popup or chrome.browserAction.onClicked. In your case you have a popup assoiciated so you can not use chrome.browserAction.onClicked.
But still you can achieve what you want using the code below.
// Add below code in your popup.js
document.body.onload = function() {
chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
chrome.tabs.sendMessage(tabs[0].id, {greeting: "sendWord"}, function(response) {
alert(response.word);
});
});
};
Let the your content.js file as is.
manifest.json
"browser_action": {
"default_icon": "images/W.png",
"default_popup": "popup.html",
"default_title": "Wordomania"
}
Hope this will solve your problem.

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