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Lexical Declarations (ES6)

Category

JavaScript

Type

New or changed feature

Status

Enabled by default (Chrome 41)

Intent stage

None

Summary

'let' and 'const' declarations define variables/constants with block scoping in strict mode.

Standards & signals

• Specification: http://www.ecma-international.org/ecma-262/6.0/#sec-let-and-const-declarations
• Firefox: In development
• Safari: In development
• Web developers: No signals

Docs: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const

Samples: https://github.com/GoogleChrome/samples/tree/gh-pages/lexical-declarations-es6

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