1  <HTML>
  2  <HEAD>
  3    <TITLE>JavaScript Example:  Boolean object</TITLE>
  4  </HEAD>
  5  <BODY BGCOLOR="#FFFFFF">
  6  
  7  <SCRIPT LANGUAGE="JavaScript1.1">
  8  
  9  with ( document ) {
 10    write("To create a Boolean object");
 11    writeln(" with initial value <STRONG>false</STRONG>, use:<P>");
 12    writeln("<UL>");
 13    if ( ! new Boolean() ) {
 14      write("<LI><TT>new Boolean()</TT><P>");
 15    }
 16    if ( ! new Boolean(0) ) {
 17      write("<LI><TT>new Boolean(0)</TT><P>");
 18    }
 19    if ( ! new Boolean(null) ) {
 20      write("<LI><TT>new Boolean(null)</TT><P>");
 21    }
 22    if ( ! new Boolean("") ) {
 23      write('<LI><TT>new Boolean("")</TT><P>');
 24    }
 25    if ( ! new Boolean(false) ) {
 26      write("<LI><TT>new Boolean(false)</TT><P>");
 27    }
 28    writeln("</UL>");
 29    writeln("or simply write");
 30    writeln("<PRE>   var myBoolean = false;</PRE>");
 31    write("All other values create a Boolean object");
 32    writeln(" with initial value <STRONG>true</STRONG>!");
 33  }
 34  
 35  </SCRIPT>
 36  
 37  </BODY>
 38  </HTML>