JavaScript label statement

The label statement in JavaScript is used to provide a labeled statement that can be referenced elsewhere in the code using the break or continue statements. It is primarily used in conjunction with loops, such as for or while, to control the flow of the program.

Here’s an example that demonstrates the usage of the label statement:

outerLoop: for (let i = 0; i < 3; i++) {
  console.log('Outer loop:', i);

  innerLoop: for (let j = 0; j < 3; j++) {
    if (j === 1) {
      break outerLoop; // Breaking out of the outer loop
    }
    console.log('Inner loop:', j);
  }
}

In this example, we have an outer loop labeled as outerLoop and an inner loop labeled as innerLoop. The break statement with the label outerLoop is used to exit the entire loop structure when j is equal to 1. As a result, the outer loop is terminated, and the program execution continues after the loop.

Similarly, you can use the continue statement with a label to skip the current iteration and move to the next iteration of a specific loop.

It’s important to note that the usage of labeled statements is generally considered as a less common feature of JavaScript and can make the code harder to read and maintain. Therefore, it is recommended to use them sparingly and only when necessary.