61 lines
1.2 KiB
Plaintext
61 lines
1.2 KiB
Plaintext
== Why is this an issue?
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Any variable or function declared in the global scope implicitly becomes attached to the global object (the ``++window++`` object in a browser environment). To make it explicit this variable or function should be a property of ``++window++``. When it is meant to be used just locally, it should be declared with the ``++const++`` or ``++let++`` keywords (since ECMAScript 2015) or within an Immediately-Invoked Function Expression (IIFE).
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This rule should not be activated when modules are used.
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=== Noncompliant code example
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[source,javascript]
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----
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var myVar = 42; // Noncompliant
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function myFunc() { } // Noncompliant
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----
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=== Compliant solution
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[source,javascript]
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----
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window.myVar = 42;
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window.myFunc = function() { };
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----
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or
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[source,javascript]
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----
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let myVar = 42;
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let myFunc = function() { }
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----
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or
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[source,javascript]
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----
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// IIFE
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(function() {
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var myVar = 42;
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function myFunc() { }
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})();
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----
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ifdef::env-github,rspecator-view[]
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'''
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== Implementation Specification
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(visible only on this page)
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include::message.adoc[]
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include::highlighting.adoc[]
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'''
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== Comments And Links
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(visible only on this page)
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include::comments-and-links.adoc[]
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endif::env-github,rspecator-view[]
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