What is the significance of the "use strict" statement in JavaScript, and how does it affect code execution?

The "use strict" statement in JavaScript enforces a stricter mode of parsing and error handling, making your code more robust and reliable. Simply put, it helps catch common coding mistakes, such as undeclared variables or duplicate parameter names by throwing errors. Strict mode is declared by adding the following code to the beginning of a script or function:

"use strict";

This mode also prevents the use of potentially problematic features like "with statements". By ensuring variables are declared before use, "use strict" makes your code cleaner, less prone to errors, and more consistent, which is especially beneficial in larger codebases or when working in team environments.