Unneeded last comma in array literal
Reports a usage of a trailing comma in an array literal.
The warning is reported only when the JavaScript language version is set to ECMAScript 5.1.
Although trailing commas in arrays are allowed by the specification, some browsers may throw an error when a trailing comma is used.
You can configure formatting options for trailing commas in Code Style | JavaScript or TypeScript | Punctuation.
Locating this inspection
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
JSLastCommaInArrayLiteral- Via Settings dialog
Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.
Inspection ID: JSLastCommaInArrayLiteral
Suppressing Inspection
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
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By default bundled with: | CLion 2025.2, GoLand 2025.2, IntelliJ IDEA 2025.2, JetBrains Rider 2025.2, PhpStorm 2025.2, PyCharm 2025.2, Qodana for .NET 2025.2, Qodana for Go 2025.2, Qodana for JS 2025.2, Qodana for JVM 2025.2, Qodana for PHP 2025.2, Qodana for Ruby 2025.2, RubyMine 2025.2, WebStorm 2025.2 |