The break statement stops code execution within the switch, and also breaks out of a loop, continuing to execute code that comes after the loop.

<!-- html element to place output -->
<p id="my_output"></p>

The following has a loop that will output the number starting with 0 and ending with 10. However, there is a condition with a break statement on line 7 that will stop execution of the loop when i = 4, before printing the 4 to the page.

// variable
let text = '';

// loop
for (let i = 0; i < 10; i++) {
    if (i == 4) {
        break;
    }
    text += i + '<br>';
}

// output to HTML element
document.getElementById('my_output').innerHTML = text;

0
1
2
3

break;