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This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.
Event.returnValue property indicates if the default action for this event has been prevented or not. It is set to
true by default, allowing the default action to occur. Setting this property to
false prevents the default action.
Event.preventDefault() instead of this non-standard method.
event.returnValue = bool; var bool = event.returnValue;
|Feature||Firefox (Gecko)||Chrome||Internet Explorer||Microsoft Edge||Opera||Safari|
|Basic support||No support||(Yes)||6||(Yes)||(Yes)||(Yes)|
|Feature||Firefox Mobile (Gecko)||Android||IE Mobile||Opera Mobile||Safari Mobile|
|Basic support||No support||(Yes)||?||?||(Yes)|