Strict mode

Strict mode in programming is a way to make JavaScript code safer and easier to debug. When enabled, it enforces stricter rules, such as preventing the use of undeclared variables, disallowing duplicate parameter names, and catching silent errors that might otherwise be ignored. This helps developers identify problems early, improve code quality, and avoid unexpected behaviors. Essentially, strict mode acts as a safety net that encourages better coding practices by highlighting potential issues during development.