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1 results for "hasListeners":
nsIEventListenerService
MozillaTechXPCOMReferenceInterfacensIEventListenerService
od overview void geteventtargetchainfor(in nsidomeventtarget aeventtarget, [optional] out unsigned long acount, [retval, array, size_is(acount)] out nsidomeventtarget aoutarray); void getlistenerinfofor(in nsidomeventtarget aeventtarget, [optional] out unsigned long acount, [retval, array, size_is(acount)] out nsieventlistenerinfo aoutarray); boolean haslistenersfor(in nsidomeventtarget aeventtarget, in domstring atype); void addsystemeventlistener(in nsidomeventtarget target, in domstring type, in nsidomeventlistener listener, in boolean usecapture); void removesystemeventlistener(in nsidomeventtarget target, in domstring type, in nsidomeventlistener listener, in boolean usecapture); attributes a...
... haslistenersfor() returns true if a event target has any listener for the given type.
... boolean haslistenersfor( in nsidomeventtarget aeventtarget, in domstring atype ); parameters aeventtarget the nsidomeventtarget for which to check if this has any listener for atype.