event.commitKey values

Question

The commitKey property event is briefly documented in api reference and give the 4 values (0, 1, 2 or 3) that can be returned in accordance with the way the field loose focus.https://opensource.adobe.com/dc-acrobat-sdk-docs/library/jsapiref/JS_API_AcroJS.html#commitkeyI personally always used this property in Custom format script as on the example of the api reference.
On the web, I found a file using commitKey in Validation script with a strange syntax:
 
if (event.commitKey=13…)

With a single “=” symbol and with 13 which seems to be the ascii character of the Carriage Return.
And that work!!!
I tried to change with "if (event.commitKey==2…)" and that doesn’t work anymore!
Does anyone have an explanation?
Is there a more detailed documentation for this property?
Thanks

try67 · Answer

Whoever wrote this code didn't know what they were doing. The only possible values of commitKey are 0-3, and it's a read-only property, so that code can't work correctly, even if it didn't have that syntax error.

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