Mega Code Archive
Using the Bitwise AND Plus Assignment Operator
<![CDATA[
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>
]]>