Break

In this section, we will guide you on how to use the Break block.

Use Cases

The break statement in JavaScript is a control flow statement used to exit loops or switch statements. It is often used with if conditions to terminate the current loop or case execution prematurely. Below are some common use cases for the break statement:

1. Exiting a Loop Early

This example exits the loop immediately when the value b is found, skipping the rest of the items.

const items = ['a', 'b', 'c']

for (let [index, value] of Object.entries(items)) {
  if (value === 'b') {
    break
  }
  console.log(index, value)
}

2. Exiting a Switch Case Early

If day is Sunday, the break statement is executed after the first matching case, skipping any further checks.

const day = 'Sunday'
switch (day) {
  case 'Saturday':
  case 'Sunday':
    console.log('Weekend!')
    break
  case 'Monday':
    console.log('Meeting')
    break
  default:
    console.log('Weekday')
}

3. Exiting Nested Loops

When outerValue = "a" and innerValue = "b", the inner loop is exited early.

const items = ['a', 'b', 'c']

for (let [outerIndex, outerValue] of Object.entries(items)) {
  for (let [innerIndex, innerValue] of Object.entries(items)) {
    if (outerValue === 'a' && innerValue === 'b') {
      break
    }
    console.log(outerValue, innerValue)
  }
}

In Tapicker, the behavior of the Break block is identical to JavaScript's break statement.

Breaking a Loop

If you want to exit a loop, here's a simple example. It shows that when the loop value equals b, the loop L608 is terminated.

Breaking a Switch Case

Exiting a switch case is equally simple. Place the Break block inside a Case block, like this.

If the condition of Case A is true, then exit the switch without checking whether the condition of Case B is satisfied.