![]() ![]() It is a work in progress and is not finished yet. S is an optional parameter that defaults to false. ES6 / ECMAScript 2015 / ES2015 Quick Reference Cheat Sheet (DRAFT) by dwapi. The specification mentions neither ES6 nor ES2015, though. ECMAScript 2015 is also known as ES6 and ECMAScript 6. If S is true then attempts to access the value of the binding before it is initialized or set it after it has been initialized will always throw an exception, regardless of the strict mode setting of operations that reference that binding. Officially, the name is ECMAScript 2015 Language and its the 6th Edition of the ECMA-262 standard. ECMAScript 2015 was the second major revision to JavaScript. The String value N is the text of the bound name. I'm not sure why Firefox gives a Synta圎rror after reading the ES2015 spec (although I'm sure the clever folk at Mozilla are correct), it seems like it's supposed to raise an exception:Ĭreate a new but uninitialized immutable binding in an Environment Record. You can try this in a regular browser: for (var i = 0, otherVar = "" i 0) break } ECMAScript 2022, the 13th and current version, was released in June 2022. ![]() Since 2015, major versions have been published every June. Your second example should definitely not work because i is declared once and not on each iteration this is just a function of how that category of loops work. ECMAScript is a JavaScript standard developed by Ecma International.
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