rspec/rules/S3757/javascript/rule.adoc

The result of an expression with an arithmetic operator ``/, *, %, {plus}{plus}, --, -, {plus}=, -=, *=, /=, %=, {plus}`` or unary operator ``+++, -++`` when at least one operand is ``++Object++`` or ``++Undefined++`` will be always a ``++NaN++`` (Not a Number).


== Noncompliant Code Example

[source,javascript]
----
x = [1, 2];
var y = x / 4;  //Noncompliant
----


== Exceptions

* ``++Date++`` operands: they are implicitly converted to numbers.
* The binary ``+`` operator with ``++Object++`` operand (concatenation).


ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
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include::message.adoc[]

include::highlighting.adoc[]

'''
== Comments And Links
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include::comments-and-links.adoc[]
endif::env-github,rspecator-view[]