Comma Operator (,) (JavaScript)
JavaScript - Internet Explorer 10
Causes two expressions to be executed sequentially.
expression1, expression2
The , operator causes the expressions to be executed in left-to-right order. A common use for the , operator is in the increment expression of a for loop. For example:
j=25;
for (i = 0; i < 10; i++, j++)
{
k = i + j;
}
The for statement allows only a single expression to be executed at the end of every pass through a loop. The , operator allows multiple expressions to be treated as a single expression, so both variables can be incremented.
Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards. Also supported in Windows Store apps. See Version Information.