Linting is the process of running a program that goes over our code and performs static checking looking for potential errors and bad coding.
There are many available linting tools for JavaScript. Some of them are available for online usage, others are available either as plugins we install into our development environment or as stand alone applications.
JavaScript Lint is a linting tool we can use online, as a stand-alone application or as a plugin installed into our development environment.
Other two popular linting tools for JavaScript are the JSLint and JSHint. These two are available as plugins we can install into our development environment.