Last updated: August 27, 2026.
Use const unless a binding must be reassigned; use let for a value that changes.
const siteName = "WebCheatSheet";
let pageViews = 0;
pageViews += 1;
console.log(`${siteName}: ${pageViews}`);const discount = 0.1;
if (discount > 0) {
const label = "Sale";
console.log(label);
}
// label is not available here.const prevents reassignment; it does not make an object deeply immutable.
