Using the Bitwise AND Plus Assignment Operator : Bitwise Operator : Operators JAVASCRIPT TUTORIALS

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Using the Bitwise AND Plus Assignment Operator



var iResult = 25 & 3;
alert(iResult);    //outputs "1"

 25 = 0000 0000 0000 0000 0000 0000 0001 1001
  3 = 0000 0000 0000 0000 0000 0000 0000 0011
---------------------------------------------
AND = 0000 0000 0000 0000 0000 0000 0000 0001



<html>
    <script language="JavaScript">
    <!--
    // integer = 32-bit binary representation
    // 12 = 00000000000000000000000000001100
    //  6 = 00000000000000000000000000000110
    //  4 = 00000000000000000000000000000100
    x = 6;
    x &= 12;
    document.write("x = ",x);
    -->
    </script>
</html>