A closure in JavaScript is a function that has access to its outer scope variables even after the outer function has returned. Closures are created when a function is defined within another function, and the inner function has access to all the variables in the outer function's scope.
Use strict equality operator (===) instead of abstract equality operator (==): The strict equality operator tests for both type and value equality, while the abstract equality operator may perform type coercion.
WebAssembly is designed to work in conjunction with JavaScript and can interact with the DOM and other web APIs in the same way that JavaScript code can. It runs in a sandboxed environment within the browser, providing a secure and isolated execution environment for code from untrusted sources.