I'm new to chrome extensions and cannot seem to figure out how the background concept works. I am building a counter extension that keeps counting even when the user closes the extension (but not the browser) and wanted to do a simple test to see if I could figure out how to use the background file. Below is my attempt to create a function that activates everytime a user clicks on a tab (outside of my extension) and when they click on 5 tabs, the alert hits. I cannot figure out why this doesn't work.
background.js:
var counter = 0;
chrome.browserAction.onClicked.addListener(function(tab){
counter++;
if (counter == 5) {
alert("Hi");
}
});
manifest.json:
{
"name": "Hello World!",
"description": "My first packaged app.",
"version": "0.1",
"permissions": ["tabs", "http://*/*"],
"manifest_version":2,
"content_scripts": [ {
"js": [ "jquery-1.9.1.js", "myscript.js" ],
"matches": [ "http://*/*", "https://*/*"]
}],
"background": {
"scripts": [
"background.js"
]
},
"browser_action": {
"default_title": "10,000 Hours",
"default_icon": "icon16.png",
"default_popup": "index.html"
},
"icons": {
"16": "icon16.png",
"48": "icon48.png",
"128": "icon128.png"
}
}
It is working for me with following code.
manifest.json
{
"name": "Popping Alert",
"description": "http://stackoverflow.com/questions/15194198/background-js-not-working-chrome-extension",
"background": {
"scripts": [
"background.js"
]
},
"version": "1",
"manifest_version": 2,
"browser_action": {
"default_title": "Click Me"
}
}
background.js
var counter = 0;
chrome.browserAction.onClicked.addListener(function (tab) {
counter++;
if (counter == 5) {
alert("Hey !!! You have clicked five times");
}
});
Can you share your related code or put your problem statement clearly if this does not work?
Related
I need to find the id of the element that holds text that I've selected, and I've been unsuccessful at finding a way to do this. It looks like the problem is with the fact that you can't use a getAttribute method on a window object. I am using a content script that communicates with an event page to carry it out. This is my content script:
let element = window.getSelection().anchorNode;
let finder = element.getAttribute('id');
alert(finder.toString()); //test
This is my event page:
chrome.contextMenus.create({ id: "M", title: "Feature One", contexts: ["selection"] });
chrome.contextMenus.create({ id: "ATCB", title: "Feature Two", contexts: ["selection"] });
chrome.contextMenus.onClicked.addListener(function(clickData){
if (clickData.menuItemId == "M" && clickData.selectionText){
//var one = clickData.selectionText;
chrome.tabs.executeScript({
file: 'contentScript.js'
});
}
if (clickData.menuItemId == "ATCB" && clickData.selectionText){
var two = clickData.selectionText;
alert(two + " two"); //test
}
});
And this is my manifest file:
{
"manifest_version": 2,
"name": "Menu",
"version": "1.0",
"icons": {
"128": "icon.png",
"48": "icon.png",
"16": "icon.png"
},
"browser_action": {
"default_icon": "icon.png"
},
"background": {
"scripts": ["eventPage.js"],
"persistent": false
},
"content_scripts": [{
"matches": ["<all_urls>"],
"js": ["contentScript.js"]
}],
"permissions": [
"contextMenus",
"tabs",
"activeTab",
"file://*/*",
"https://*/*",
"http://*/*"
]
}
Thank you for reading my question
This can be accomplished with document.activeElement.id;
https://www.w3schools.com/jsref/prop_document_activeelement.asp
I have an object WIO on a webpage which i want to access in my chrome extension. I have followed this example and injected my script.js in the page using first method.
I can successfully read WIO object in script.js. But the problem is i can't access it in popup.html.
Any suggestions will be great appreciated.
Here is manifest.json
{
"manifest_version": 2,
"name": "Campaign Analyzer",
"description": "Analyze campaign data",
"version": "0.1",
"icons": { "128": "icon_128.png" },
"browser_action": {
"default_popup": "popup.html"
},
"permissions": ["activeTab", "<all_urls>"],
"content_scripts": [
{
"matches": ["<all_urls>"],
"js": ["jquery-3.4.1.min.js", "inject.js"]
}
],
"web_accessible_resources": ["script.js"]
}
inject.js
s.src = chrome.runtime.getURL("script.js");
s.onload = function() {
this.remove();
};
(document.head || document.documentElement).appendChild(s);
script.js
setTimeout(function() {
console.log(WIO.sessionInfo.context);
}, 6000);
Even after searching a lot of topics in stack overflow, nothing helped me to fix this error...
I'm trying to create an extension, and for now there are simple codes in it, but unfortunately, the console is not logging 'Hello, world!' from the content_scripts file.
manifest.json
{
"manifest_version": 2,
"name": "Example",
"shortname": "exmpl",
"description": "__MSG_appDesc__",
"version": "0.0.1",
"default_locale": "en",
"author": "Mateus Akino",
"icons": {
"16": "i16x.png",
"48": "i48x.png",
"128": "i128x.png"
},
"homepage_url": "http://example.com/",
"browser_action": {
"default_icon": "i32x.png",
"default_popup": "popup.html"
},
"update_url": "http://example.com/update.xml",
"chrome_url_overrides": {
"newtab": "newtab.html"
},
"content_scripts": [{
"matches": ["*://*.youtube.com/*"],
"js": ["execute.js"],
"run_at": "document_end"
}],
"background": {
"scripts": ["background.js"]
},
"permissions": [
"activeTab", "tabs", "i18n", "management", "webNavigation", "<all_urls>"
]
}
execute.js
console.log("Hello, world!");
background.js
chrome.webNavigation.onHistoryStateUpdated.addListener(function (details) {
chrome.tabs.executeScript(null, {
file: "execute.js"
});
});
I fixed the problem, so I'm posting it here if someone else has the same issue.
Looks like the code was fine, the problem was the way I was loading the extension...
As I'm using 'Load unpacked extension', my manifest.json wasn't updating just by disabling and enabling it (neither by using Refresh extensions now).
So I removed the extension, loaded it again and it's working normally now.
I'm trying to make a Google chrome extension that injects a script upon clicking the extension icon. However, i want the same script to be injected whenever I load/go to another page, without having to click on the extension icon again.
background.js
chrome.browserAction.onClicked.addListener(function (tab) {
if (tab.url.startsWith("https://")){
chrome.tabs.executeScript(tab.id, {
"file": "js/contentscript.js"
}, function () {
console.log("Script Executed .. "); // Notification on Completion
});
}
else{
alert('Error');
}
});
manifest.json i want to execute the script on browserAction so adding the script on content_scripts is not an option i would like to pursue
"permissions": ["tabs", "windows", "notifications", "activeTab"],
"version": "2.0",
"browser_action":
{
"name": "Click to activate extension",
"default_icon": "images/icon.png",
},
"background":
{
"scripts":["js/background.js"]
},
"icons":
{
"16": "images/icon16.png",
"48": "images/icon48.png",
"128": "images/icon128.png"
},
"content_scripts":
[{
"js": ["js/jquery-2.1.4.min.js"],
"matches": [ "https://*/*" ],
"run_at": "document_end"
}]
contenscript.js - only a sample script, but gets my point across
alert("here");
setTimeout(function(){window.open("www.google.com");});
P.S. This is my first time asking a question in stackoverflow, please be gentle with me. :D
You could listen to webNavigation.onCompleted event, which fires when a document, including the resources it refers to, is completely loaded and initialized.
Compared with tabs.onUpdated event, you could use event filters to restrict your event notifications. For this part, you could check my answer in this post Running an extension in background on page load/refresh for more details.
manifest.json
{
"name": "36735306",
"version": "1.0",
"description": "Your description here",
"manifest_version": 2,
"background": {
"scripts": ["background.js"]
},
"web_accessible_resources": ["content.js"],
"permissions": [
"webNavigation",
"<all_urls>"
]
}
background.js
chrome.webNavigation.onCompleted.addListener(function(details) {
if(details.frameId === 0) {
chrome.tabs.executeScript(details.tabId, {"file": "content.js"});
}
});
I am trying to get a keyboard shortcut to work and at this point I am just testing to see that pressing the shortcut works. So currently what I have it do is send a message to the background page that it is working but the key press never registers. I was wondering how to address this issue.
manifest.json
{
"manifest_version": 2,
"name": "My Cool Extension",
"version": "0.3.1.5",
"description":"User can enter in wepage and press button to open webpage in new tab.",
"background": {
"scripts": ["background.js"]
},
"content_scripts": [
{
"matches": [
"<all_urls>"
],
"js": ["jquery-2.1.4.min.js", "content.js"]
}
],
"browser_action": {
"default_icon": "arrow.png",
"default_popup":"popup.html"
},
"permissions": [
"tabs",
"storage"
],
"icons":{
"128":"arrow.png"
},
"commands": {
"openSavedTab": {
"suggested_key": {
"default": "Ctrl+Shift+Y",
"mac": "Command+Shift+Y"
},
"description": "Opens saved tab"
}
}
}
tab_shortcuts.js
chrome.commands.onCommand.addListener(function(command) {
chrome.tabs.update({}, function(tab) {
if (command == 'toggle-pin-tab')
chrome.extension.getBackgroundPage().console.log("Shortcut is functional");
alert("working");
});
});
Thank you wOxxOm for your help. You were right when you said the issue was with a conflicting extension with the same hotkey assigned. Once I disabled the extension my extension worked properly.