JavaScript Tutorial/Operators/Comma Operator

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, (Comma)

Syntax statement1, statement2, statement3

The comma allows multiple statements to be executed as one statement.

The value returned from this operation is the return value of the right-most statement.



<html>
    <script language="JavaScript">
    <!--
    x = (y = 3, z = 9);
    document.write("x = ",x,"<br>y = ",y,"<br>z = ",z);
    -->
    </script>
</html>
Источник — «http://wbex.ru/index.php?title=JavaScript_Tutorial/Operators/Comma_Operator&oldid=9165»