Executes a block of statements for as long as a specified condition is true.

for (initialization; test; increment)
   statements 

Arguments

initialization

Required. An expression. This expression is executed only once, before the loop is executed.

test

Required. A Boolean expression. If test is true, statement is executed. If test if false, the loop is terminated.

increment

Required. An expression. The increment expression is executed at the end of every pass through the loop.

statements

Optional. One or more statements to be executed if test is true. Can be a compound statement.

Remarks

You usually use a for loop when the loop is to be executed a specific number of times.

Example

The following example demonstrates a for loop.

/* i is set to 0 at start, and is incremented by 1 at the end 
of each iteration. Loop terminates when i is not less 
than 10 before a loop iteration. */
var myarray = new Array();
for (i = 0; i < 10; i++) {
   myarray[i] = i;
}

Requirements

Version 1

See Also

for...in Statement | while Statement