letters = new Array("a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"); numbers = new Array(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26); colors = new Array("FF","CC","99","66","33","00"); var endResult; function doTest() { endResult = ""; // make up email address for (var k=0;k<4000;k++) { username = makeName(6); (k%2)?email=username+"@mac.com":email=username+"(at)mac.com"; // validate the email address var pattern = /^[a-zA-Z0-9\-\._]+@[a-zA-Z0-9\-_]+(\.?[a-zA-Z0-9\-_]*)\.[a-zA-Z]{2,3}$/; if(pattern.test(email)) { var r = email + " appears to be a valid email address."; addResult(r); } else { r = email + " does NOT appear to be a valid email address."; addResult(r); } } // make up ZIP codes for (var s=0;s<4000;s++) { var zipGood = true; var zip = makeNumber(4); (s%2)?zip=zip+"xyz":zip=zip.concat("7"); // validate the zip code for (var i = 0; i < zip.length; i++) { var ch = zip.charAt(i); if (ch < "0" || ch > "9") { zipGood = false; r = zip + " contains letters."; addResult(r); } } if (zipGood && zip.length>5) { zipGood = false; r = zip + " is longer than five characters."; addResult(r); } if (zipGood) { r = zip + " appears to be a valid ZIP code."; addResult(r); } } } function makeName(n) { var tmp = ""; for (var i=0;i<n;i++) { var l = Math.floor(26*Math.random()); tmp += letters[l]; } return tmp; } function makeNumber(n) { var tmp = ""; for (var i=0;i<n;i++) { var l = Math.floor(9*Math.random()); tmp = tmp.concat(l); } return tmp; } function addResult(r) { endResult += "\n" + r; } doTest();