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Code Inspection: 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.

Suppress an inspection in the editor

  1. Position the caret at the highlighted line and press Alt+Enter or click the Intention action icon.

  2. Click the arrow next to the inspection you want to suppress and select the necessary suppress action.

Last modified: 13 May 2022
Code Inspection: Unnecessary statement use Code Inspection: Unneeded last comma in object literal