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Code Inspection: Unneeded last comma in array literal

Reports when a trailing comma is used in array literals.

The warning is reported only when the JavaScript language version is set to JavaScript 1.8.5, ECMAScript 3 or 5.1.

Trailing commas in arrays are allowed according to these specifications, however, some browsers might 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: 08 March 2021
Code Inspection: Unnecessary statement use Code Inspection: Unneeded last comma in object literal