# JavaScript tutorials for Beginners – JavaScript break Statement # (JavaScript Tutorials for Beginners)

In this end-to-end example, you will learn – JavaScript tutorials for Beginners – JavaScript break Statement.

# JavaScript break Statement

#### In this tutorial, you will learn about the break statement with the help of examples.

The `break` statement is used to terminate the loop immediately when it is encountered. The `break` statement is also used to terminate the `switch` statement.

The syntax of the `break` statement is:

``break [label];``

Note: `label` is optional and rarely used.

## Example 1: break with for loop

``````// program to print the value of i
for (let i = 1; i <= 5; i++) {
// break condition
if (i == 3) {
break;
}
console.log(i);
}``````

Output

```1
2```

In the above program, the `for` loop is used to print the value of i in each iteration. The `break` statement is used as:

``````if(i == 3) {
break;
}``````

This means, when i is equal to 3, the `break` statement terminates the loop. Hence, the output doesn’t include values greater than or equal to 3.

Note: The `break` statement is almost always used with decision-making statements. To learn more, visit JavaScript if…else Statement.

To learn more about `for` loop, visit JavaScript for loop.

## Example 2: break with while loop

``````// program to find the sum of positive numbers
// if the user enters a negative numbers, break ends the loop
// the negative number entered is not added to sum

let sum = 0;

while(true) {

// take input again if the number is positive
number = parseInt(prompt('Enter a number: '));

// break condition
if(number < 0) {
break;
}

sum += number;

}

// display the sum
console.log(`The sum is \${sum}.`);``````

Output

```Enter a number: 1
Enter a number: 2
Enter a number: 3
Enter a number: -5
The sum is 6. ```

In the above program, the user enters a number. The `while` loop is used to print the total sum of numbers entered by the user.

Here the `break` statement is used as:

``````if(number < 0) {
break;
}``````

When the user enters a negative number, here -5, the `break` statement terminates the loop and the control flow of the program goes outside the loop.

The `while` loop continues until the user enters a negative number.

To learn more about `while` loop, visit JavaScript while loop.

## break with Nested loop

When `break` is used inside of two nested loops, `break` terminates the inner loop. For example,

``````// nested for loops

// first loop
for (let i = 1; i <= 3; i++) {

// second loop
for (let j = 1; j <= 3; j++) {
if (i == 2) {
break;
}
console.log(`i = \${i}, j = \${j}`);
}
}``````

Output

```i = 1, j = 1
i = 1, j = 2
i = 1, j = 3
i = 3, j = 1
i = 3, j = 2
i = 3, j = 3```

In the above program, when `i == 2``break` statement executes. It terminates the inner loop and control flow of the program moves to the outer loop.

Hence, the value of i = 2 is never displayed in the output.

## JavaScript Labeled break

When using nested loops, you can also terminate the outer loop with a `label` statement.

However labeled `break` is rarely used in JavaScript because this makes the code harder to read and understand.

The `break` statement is also used with `switch` statements. To learn more, visit JavaScript switch statement.

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