Stop a loop as soon as a target is found.

Break in Loops

break_loop.js
const stopAt = 3;
let seen = 0;
for (let i = 1; i <= 5; i += 1) {
  seen = i;
  if (i === stopAt) {
    break;
  }
}

console.log("stopAt=" + stopAt);
console.log("seen=" + seen);
break-loop `break` exits the nearest loop immediately. Code after the loop continues with the values built so far.