重置
横排
竖排
/
mdn2
/
en-US
/
docs
/
Mozilla
/
Add-ons
/
WebExtensions
/
API
/
userScripts
userScripts
onBeforeScript
register
RegisteredUserScript
UserScriptOptions
Working_with_userScripts
/
mdn2
/
en-US
/
docs
/
Mozilla
/
Add-ons
/
WebExtensions
/
API
/
userScripts
/
RegisteredUserScript
RegisteredUserScript
unregister
/
mdn2
/
en-US
/
docs
/
Mozilla
/
Add-ons
/
WebExtensions
/
API
/
userScripts
/
Working_with_userScripts
Working_with_userScripts
/
onBeforeScript
register
RegisteredUserScript
UserScriptOptions
Working_with_userScripts