Is using labels in JavaScript bad practice?

The labels in JavaScript are used mainly with break, or continue in nested loops to be able to break the outer, or continue the outer loop from the code inside inner loop:

    for (let i = 0; i < 10; i++)
       let k = 5;
       for (let j = 0; j < 10; j++) // inner loop
          if (j > 5) 
               break; // inner 
               continue outer;  // it will go to next iteration of outer loop

If you used continue without ‘outer’ label, it would go to the next iteration of inner loop. That’s why there is a need for labels in Javascript.

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