break Statement (Windows Scripting - JScript)

 

Terminates the current loop, or if in conjunction with a label, terminates the associated statement.

Syntax

break [label];

Remarks

The optional label argument specifies the label of the statement you are breaking from.

You typically use the break statement in switch statements and in while, for, for...in, or do...while loops. You most commonly use the label argument in switch statements, but it can be used in any statement, whether simple or compound.

Executing the break statement exits from the current loop or statement, and begins script execution with the statement immediately following.

Examples

Description

In this example, the counter is set up to count from 1 to 99; however, the break statement terminates the loop after 14 counts.

Code

for (var i = 1; i < 100; i++)
    {
    if (i == 15)
        {
        break;
        }
    document.write (i);
    document.write (" ");
    }

Description

In the following code, the break statement refers to the for loop that is preceded by the Inner: statement. When j is equal to 24, the break statement causes the program flow to exit that loop. The numbers 21 through 23 print on each line.

Code

Outer:
for (var i = 1; i <= 10; i++)
    {
    document.write ("<br />");
    document.write ("i: " + i);
    document.write (" j: ");
Inner:
    for (var j = 21; j <= 30; j++)
        {
        if (j == 24)
             {
             break Inner;
             }
        document.write (j + " ");
        }
    }

Requirements

Version 1

Change History

Date	History	Reason
September 2009	Added second example.	Information enhancement.
March 2009	Modified example.	Information enhancement.

See Also

continue Statement (Windows Scripting - JScript)
do...while Statement (Windows Scripting - JScript)
for Statement (Windows Scripting - JScript)
for...in Statement (Windows Scripting - JScript)
Labeled Statement (Windows Scripting - JScript)
while Statement (Windows Scripting - JScript)