This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
returnValue indicates whether the default action for
this event has been prevented or not. It is set to
default, allowing the default action to occur. Setting this property to
false prevents the default action.
event.returnValue = bool; var bool = event.returnValue;
Boolean value which is
true if the event has not been
canceled; otherwise, if the event has been canceled or the default has been prevented,
the value is
The value returned by
returnValue is the opposite of the value returned by
returnValue was introduced into the DOM by Internet Explorer 6, and due to
that browser's ubiquity became so commonly used that other browsers eventually
implemented it as well. It has been adopted into the DOM specification, primarily to
ensure that existing web content continues to function going forward.
New projects should generally avoid using
returnValue, although they may
if they choose to do so.
The definition of 'returnValue' in that specification.
|Living Standard||Added for legacy compatibility.|
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