Cannot read property 'onPageChanged' of undefined
- by user3522749
sample extension background.js code
chrome.runtime.onInstalled.addListener(function() {
chrome.declarativeContent.onPageChanged.removeRules(undefined, function() {
chrome.declarativeContent.onPageChanged.addRules([{
conditions: [
// When a page contains a <video> tag...
new chrome.declarativeContent.PageStateMatcher({
pageUrl: { hostEquals: 'www.youtube.com'}
})
],
// ... show the page action.
actions: [new chrome.declarativeContent.ShowPageAction() ]
}]);
});
});
and I got Cannot read property 'onPageChanged' of undefined in console. No problem running the code, why is that happening?
