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Assignment to function parameter

Reports an assignment to a function parameter, including increment and decrement operations. Although occasionally intended, this construct can be extremely confusing, and is often a result of an error.

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.

AssignmentToFunctionParameterJS
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.

Settings or Preferences | Editor | Inspections | JavaScript and TypeScript | Assignment issues

Inspection ID: AssignmentToFunctionParameterJS

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:

//noinspection AssignmentToFunctionParameterJS

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Last modified: 18 September 2025