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Default parameters (ES6)

Category

JavaScript

Type

New or changed feature

Status

Enabled by default (Chrome 49)

Intent stage

None

Summary

Allows formal parameters to be initialized with default values if no value (or 'undefined') is passed.

Standards & signals

• Specification: http://www.ecma-international.org/ecma-262/6.0/#sec-functions-and-classes
• Firefox: Shipped/Shipping
• Safari: Shipped/Shipping
• Web developers: Positive
• Tracking bug: https://code.google.com/p/v8/issues/detail?id=2160

Docs: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Default_parameters

Samples: https://googlechrome.github.io/samples/default-parameters-es6/index.html

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