rspec/rules/S3760/javascript/rule.adoc

Expressions with arithmetic (``/, {empty}*, %, {plus}{plus}, --, -, -=, {empty}*=, /=, %=, +=, {plus}``), unary (``++-++``), or comparison operators (``++>, <, >=, <=++``) where one, or both, of the operands is a String, Boolean or Date value rely on implicit conversions. Both the maintainability and reliability levels of such a piece of code are questionable.


== Noncompliant Code Example

[source,javascript]
----
str = "80";
quarter = str / 4; // Noncompliant

if (str < 10) { // Noncompliant
   // ...
}
----


== Compliant Solution

[source,javascript]
----
str = "80";
parsedStr = parseInt(str);
quarter = parsedStr / 4;

if (parsedStr < 10) {
  // ...
}
----


== Exceptions

* Expressions using the binary ``{plus}`` operator with at least one ``++String++`` operand are ignored because the ``{plus}`` operator will perform a concatenation in that case.
* Comparisons where both operands are strings are ignored because a lexicographical comparison is performed in that case.


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[]