ECMAScript support in Opera Presto 2.12

ECMAScript is the standardized version of JavaScript Core. It is being standardized through the ECMA standards body. ECMAScript does not include browser and document related objects.

ECMA-262 2 and 3

Opera Presto supports the entire ECMA-262 2nd and 3rd standards, with no exceptions. They are more or less aligned with JavaScript 1.3/1.5 Core.

ECMA-262 5 (ECMAScript 5)


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