JS Break

JavaScript Break and Continue

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The break statement "jumps out" of a loop.

The continue statement "jumps over" one iteration in the loop.

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The Break Statement

You have already seen the break statement used in an earlier chapter of this tutorial. It was used to "jump out" of a switch() statement.
The break statement can also be used to jump out of a loop. 
The break statement breaks the loop and continues executing the code after the loop (if any):

Example

for (i = 0; i < 10; i++) {
    if (i === 3) { break; }
    text += "The number is " + i + "<br>";
}

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The Continue Statement

The continue statement breaks one iteration (in the loop), if a specified condition occurs, and continues with the next iteration in the loop.
This example skips the value of 3:

Example

for (i = 0; i < 10; i++) {
    if (i === 3) { continue; }
    text += "The number is " + i + "<br>";
}

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JavaScript Labels

To label JavaScript statements you precede the statements with a label name and a colon:

label:
statements

The break and the continue statements are the only JavaScript statements that can "jump out of" a code block.
Syntax:

break labelname;

continue labelname;

The continue statement (with or without a label reference) can only be used to skip one loop iteration.
The break statement, without a label reference, can only be used to jump out of a loop or a switch.
With a label reference, the break statement can be used to jump out of any code block:

Example

var cars = ["BMW", "Volvo", "Saab", "Ford"];
list: {
    text += cars[0] + "<br>";
    text += cars[1] + "<br>";
    text += cars[2] + "<br>";
    break list;
    text += cars[3] + "<br>";
    text += cars[4] + "<br>";
    text += cars[5] + "<br>";
}

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