let firstMatchValue = -1;
let array1 = [1, 2, 3];
let array2 = [2, 3, 4];
firstLoop: for (let i in array1) {
for (let n in array2) {
if (array1[i] === array2[n]) {
firstMatchValue = array1[i];
break firstLoop;
}
}
}
//firstMatchValue is 2
console.log(firstMatchValue);
| A label provides a statement with an identifier that lets you refer to it elsewhere in your program. For example, you can use a label to identify a loop, and then use the break or continue statements to indicate whether a program should interrupt the loop or continue its execution. |