String and RegExp function example

<script type="text/javascript" charset="utf-8">
 function doc (argument) {
  document.write(argument);
  document.write("<br />\n");
 }
 var url = "The URL is http://www.w3c.org/DOM/Activity";
 var pattern = /(\w+):\/\/([\w\.]+)\/([\w\/]+)/; 
 // three subexpressions 
 var results = url.match(pattern);
 doc("results.input =\t" + results.input);
 doc("results.index =\t" + results.index);
 for (var i=0; i < results.length; i++) { 
  doc("results[" + i + "] =\t" + results[i]); 
 } 

 doc("========================================================")
 var s = 'text1test2test3'
 var m = s.match(/test/); 
 var n = /test/.exec(s);

 doc('m == n : ' + (m == n)); 
 doc('typeof m=' + typeof m);
 doc('typeof n=' + typeof n);
 doc('m[0]=' + m[0]);
 doc('n[0]=' + n[0]);
 doc('m.index=' + m.index);
 doc('n.index=' + n.index);
 doc('m.input=' + m.input);
 doc('n.input=' + n.input);

</script>