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for Statement

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

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

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.
statement
Optional. Statement 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 known 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 (var i = 0; i < 10; i++) {
   myarray[i] = i;
}

Requirements

Version 1

See Also

for...in Statement | while Statement

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