Scope

const site = "TechSnow"; // global: usable everywhere

function show() {
  const lesson = "Scope";  // function scope: only inside show()
  if (true) {
    const tip = "Use const"; // block scope: only inside these braces
    console.log(site, lesson, tip);
  }
  // console.log(tip); ← error: tip is not defined here
}
show();