Using Binary Flags : Number « Data Type « JavaScript DHTML






  1. JavaScript DHTML
  2. Data Type
  3. Number

Using Binary Flags

   

<html>
<head>
<title>Using Binary Flags</title>
<script type="text/javascript">
var FIELD_A = 0x1;  // 00001
var FIELD_B = 0x2;  // 00010
var FIELD_C = 0x4;  // 00100
var FIELD_D = 0x8;  // 01000
var FIELD_E = 0x10; // 10000

var fieldsSet = FIELD_A | FIELD_C | FIELD_E;

if ((fieldsSet & FIELD_A) && (fieldsSet & FIELD_C)) {
   document.write("Fields A and C are set");
}

</script>
</head>
</body>
</html>








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