rspec/rules/S1314/javascript/rule.adoc

== Why is this an issue?

include::../description.adoc[]

Additionally, these literals will throw SyntaxError in strict mode. 0-prefixed octal literals have been deprecated since ECMAScript 5 and should not be used in modern JavaScript code.

[source,javascript,diff-id=1,diff-type=noncompliant]
----
const myNumber = 010; // Noncompliant: Deprecated format
----

Use decimal syntax when possible as it is more readable.

[source,javascript,diff-id=1,diff-type=compliant]
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const myNumber = 8;
----

If octal notation is required, use the standard syntax: a leading zero followed by a lowercase or uppercase Latin letter "O" (`0o` or `0O`).

[source,javascript,diff-id=1,diff-type=compliant]
----
const myNumber = 0o10;
----

== Resources
=== Documentation

* MDN web docs - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates#octal_numbers[Octal numbers]
* MDN web docs - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Deprecated_octal[SyntaxError: "0"-prefixed octal literals are deprecated]
* MDN web docs - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode[Strict mode]

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== Implementation Specification
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== Comments And Links
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include::../comments-and-links.adoc[]

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