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Avoid "Member not found exception" in IE10
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'change' custom events raise "Member not found" in <= IE10. To
circumvent this, the SyntheticEvent class now checks for "typeof
event.cancelBubble !== 'unknown'". This eliminates this exception and
maintains the expected bubbling functionality.

Addresses #7320.
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nhunzaker committed Jul 25, 2016
1 parent 08a0895 commit 1a64911
Showing 1 changed file with 7 additions and 1 deletion.
8 changes: 7 additions & 1 deletion src/renderers/dom/client/syntheticEvents/SyntheticEvent.js
Original file line number Diff line number Diff line change
Expand Up @@ -135,9 +135,15 @@ Object.assign(SyntheticEvent.prototype, {

if (event.stopPropagation) {
event.stopPropagation();
} else {
} else if (typeof event.cancelBubble !== 'unknown') { // eslint-disable-line valid-typeof
// The ChangeEventPlugin registers a "propertychange" event for
// IE. This event does not support bubbling or cancelling, and
// any references to cancelBubble throw "Member not found". A
// typeof check of "unknown" circumvents this issue (and is also
// IE specific).
event.cancelBubble = true;
}

this.isPropagationStopped = emptyFunction.thatReturnsTrue;
},

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