for Statement


for (initialization; test; increment) ...statement

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.

statement: Optional. Statement to be executed if test is true. Can be a compound statement.

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

The following example demonstrates a for loop.

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/* 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* (var i = 0; i < 10; i++) { myarray[i] = i; }

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/* 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 (var i = 0; i < 10; i++) {
   myarray[i] = i;
}

Version 1

Reference

for...in Statement
while Statement

Arguments

Remarks

Example

Requirements

See Also

Reference