ReSharper 2016.3 Help

Code Inspection and Quick-Fixes in JavaScript

The key features of ReSharper's code analysis are also supported in JavaScript. You can find the detailed information on these features in the corresponding topics of the Code Analysis section. In the main topic of the section, you can also find the feature matrix and check what exactly is supported in JavaScript.

In this topic, you can find some examples of using code analysis features in JavaScript:

Code Inspection

ReSharper's static code analysis can detect more than hundred different errors and problems in JavaScript code.

The analysis is performed by applying code inspections to the current document or in any specified scope.

To look through the list of available inspections for JavaScript, open the Code Inspection | Inspection Severity page of ReSharper options, and then expand the JavaScript node.

Resolving global variables

ReSharper highlights usages of undefined variables as warnings. There are cases, however, when these usages are valid. For instance, some variables can be defined directly in the markup.

One way to deal with this, is to disable or suppress the corresponding code inspection. However, you can define such variables using the // global comment. In this case, the inspection will stay active and help you to find typos in variable names.

You can place these comments either at the top of the current file or use a single file for all global variables of the project. Each variable requires a new comment, e.g.: // global variableName


ReSharper provides dozens of quick-fixes for JavaScript. Here are some examples:

Create from usage

This is one of the most useful quick-fixes. Whenever you use anything that was not declared, ReSharper can help you create a valid declaration taking into account the usage and the surrounding context.

Specify qualifier explicitly

In case an explicit qualifier is missing, use this quick-fix to add a qualifier.


Declare local variable

When ReSharper finds out that a variable has been assigned without being declared, use this quick-fix to transform the assignment into a variable declaration.


Making ReSharper ignore specific code

ReSharper allows you to ignore specific files, folders and file masks in different ways. You can configure ignored files on the following options pages:

Last modified: 12 October 2017

See Also