Why?

[mando_alvarado_]

Chrome:

console.log(parseInt('045'));
console.log(parseInt(045));
‍‍‍‍

45
37
‍‍‍‍

Firefox:

console.log(parseInt('045'));
console.log(parseInt(045));
‍‍‍‍

45
37
‍‍‍‍

Node.js:

console.log(parseInt('045'));
console.log(parseInt(045));
‍‍‍‍

45
37
‍‍‍‍

Alfresco javascript:

logger.log(parseInt('045'));
logger.log(parseInt(045));
‍‍‍‍

37
37
‍‍‍‍

I understand 37. Because octal. I know that parseInt takes an optional radix argument. My only question is, why is Alfresco Javascript different?

[kaynezhang]

I think it has something todo with JavaScript engine. Different engine treats parseInt('045') differently.
Alfreso use Rhino as JavaScript engine,using Rhino to evalute parseInt('045') will give you 37.

[mrogers]

Because Octal numbers were removed by ES 5 (ECMA Script version 5) http://www.ecma-international.org/ecma-262/5.1/

Rhino has been fixed to not have octal numbers,  I guess its just a case of waiting for the browsers to catch up.   You may also be able to set your browser to "strict mode" to get a more standard compliant script engine.

Edit - hang on - the answer is wrong they should all be 45.    However parseInt of octal numbrs is deprecated, clearly there's a bug somwerhere.