This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

ఇంకా తెలుసుకోండి

ఈ థ్రెడ్ ఆర్కైవ్ చేయడం జరిగినది. మీకు సహాయం అవసరం ఉంటే, దయచేసి ఒక కొత్త ప్రశ్న అడగండి.

element.openOrClosedShadowRoot property always returns null

  • 1 ప్రత్యుత్తరం
  • 0 ఈ సమస్యలు కలిగి ఉన్నాయి
  • 3 వీక్షణలు
  • చివరి సమాధానమిచ్చినది cor-el

Tamer Temizer
Tamer Temizer
more options

Hello, I'm trying to use https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/dom/openOrClosedShadowRoot functionality in an extension but the element.openOrClosedShadowRoot always returns null.

Also is there a place in Firefox Devtools console (similar to the Chrome Devtools dropdown) to switch the context from the user console to the extension console so we can try extension only APIs?

Thanks.

Hello, I'm trying to use https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/dom/openOrClosedShadowRoot functionality in an extension but the element.openOrClosedShadowRoot always returns null. Also is there a place in Firefox Devtools console (similar to the Chrome Devtools dropdown) to switch the context from the user console to the extension console so we can try extension only APIs? Thanks.

ప్రత్యుత్తరాలన్నీ (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Open about:debugging and go to "This Firefox" and click the Inspect button next to the extension.