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Microsoft® JScript™
, Operator
 Language Reference 
Version 1 

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Description
Causes two expressions to be executed sequentially.
Syntax
expression1, expression2

The , operator syntax has these parts:

Part Description
expression1 Any expression.
expression2 Any expression.

Remarks
The , operator causes the expressions on either side of it to be executed in left-to-right order, and obtain the value of the expression on the right. The most common use for the , operator is in the increment expression of a for loop. For example:
for (i = 0; i < 10; i++, j++)
{
  k = i + j;
}
The for statement only allows a single expression to be executed at the end of every pass through a loop. The , operator is used to allow multiple expressions to be treated as a single expression, thereby getting around the restriction.


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