Chrome extension getUrl not working in injected file
I’m developing a Chrome extension, is there any way to get the chrome.extension.getURL('file path') method from injected file? I’m unable to access above method from injected file.
manifest.json
{
"name": "Name",
"version": "0.1",
"description": "Name chrome extension",
"background": {
"persistent": false,
"scripts": ["js/background.js"]
},
"permissions": [
"tabs",
"https://*/*"
],
"content_scripts": [
{
"matches": ["https://mail.google.com/*"],
"js": ["js/content.js"],
"run_at": "document_end"
}
],
"web_accessible_resources": [
"js/injected.js",
"html/popup.html"
],
"manifest_version": 2
}
injected.js
console.log("Ok injected file worked");
console.log("Url: ", chrome.extension.getURL('html/popup.html'));
contentScript.js
var s = document.createElement('script');
s.src = chrome.extension.getURL('js/injected.js');
(document.head || document.documentElement).appendChild(s);
No you cant, once you inject the script in a page, it cannot access chrome.extension.getURl. But you can communicate between your injected script and content script. One of the methods is using custom events.
mainfest.json:
{
"name": "Name",
"version": "0.1",
"description": "Name chrome extension",
"background": {
"persistent": false,
"scripts": ["js/background.js"]
},
"permissions": [
"tabs",
"https://*/*"
],
"content_scripts": [
{
"matches": ["https://mail.google.com/*"],
"js": ["js/content.js"],
"run_at": "document_end"
}
],
"web_accessible_resources": [
"js/injected.js",
"html/popup.html"
],
"manifest_version": 2
}
In your injected script :
console.log("Ok injected file worked");
document.addEventListener('yourCustomEvent', function (e)
{
var url=e.detail;
console.log("received "+url);
});
In your content script:
var s = document.createElement('script');
s.src = chrome.extension.getURL('js/injected.js');
(document.head || document.documentElement).appendChild(s);
s.onload = function(){
var url=chrome.runtime.getURL("html/popup.html");
var evt=document.createEvent("CustomEvent");
evt.initCustomEvent("yourCustomEvent", true, true, url);
document.dispatchEvent(evt);
};
You have to mention the file_path or file_names in the web_accessible_resources of extension manifest.
EG:
"web_accessible_resources":[
"styles/*",
"yourfilename.js"
]
After that you can have have the file in injected script by calling the method.
"chrome.extension.getURL('yourfilename.js')";
chrome.extension.getURL is now depcrecated. Docs
Use chrome.runtime.getURL in the background script.
You need to send a message from your contentScript to backgroundScript
eg.
// contentScript.js
chrome.runtime.sendMessage({ message: "popup" }, function (response) {
//
});
// backgroundScript.js
chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
if (request.message === "popup") {
chrome.tabs.create({ url: chrome.runtime.getURL("popup.html") });
}
});
getURL is deprecated since Chrome 58.
Just replace
s.src = chrome.extension.getURL('js/injected.js');
with
s.src = chrome.runtime.getURL('js/injected.js');
Add into extension manifest.json
"web_accessible_resources": ["*.js"]
From “web_accessible_resources” manual page:
These resources would then be available in a webpage via the URL chrome-extension://[PACKAGE ID]/[PATH], which can be generated with the extension.getURL method.
