I don't know where came wrong. The chrome extension keep on showing error
manifest.json
{
"name": "CatExtension",
"description": "Coding train practice-communication between background script and content script",
"version": "1.0",
"manifest_version": 3,
"action": {
"default_popup": "popup.html",
"default_icon": {
"16": "/images/cat.png"
}
},
"background": {
"service_worker": "background.js"
},
"content_scripts": [
{
"matches": [
"<all_urls>"
],
"js": [
"content.js"
]
}
]
}
background,js
chrome.action.onClicked.addListener(buttonClicked);
function buttonClicked(tab) {
console.log(tab);
}
Where is the error?