👉 Let's break down "let math" in JavaScript. It's a shorthand abbreviation for `let math`, which is used to declare a block-scoped variable specifically for mathematical operations or constants within a JavaScript function, block, or expression. This means the variable is only accessible within that specific scope, preventing name collisions with other variables in the surrounding code. Using `let` instead of `var` ensures that the variable is initialized only once when it's first declared, and its value persists across function calls. In mathematical contexts, `let math` is often employed to store constants like mathematical constants (e.g., pi), or to encapsulate complex calculations, making the code more readable and maintainable by clearly defining where these values are used.
