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               <div id="css-table">
  <div id="col-1">
   <ul>
    <li><a href="#col-1-tab-1">Example 4</a></li>
   </ul>
   <div id="col-1-tab-1">
   <article>
    <h1>telephone number comparison</h1>
    <pclass="title"><b>RegExp:</b><br>
    <textarea class="input" id="regexp-def"></textarea>
    </p>
    <p>
     <p class="title"><b>apg-exp:</b>
    </p>
    <textarea class="input" id="apgexp-def"></textarea>
    </p>
      <p class="title"><b>input string:</b>
    </p>
     <textarea class="input" id="email-address"></textarea>
    </p>
    <p>
     <button id="tryit" class="tryit">try it</button>
    </p>
    <div class="discussion">
    <p>This is the same phone number you've seen before but the RegExp pattern syntax has been added for a direct comparison.</p>
    </div>
   </article>
  </div>
  </div>
  <div id="col-2">
   <ul>
    <li><a href="#col-2-tab-1">apg-exp</a></li>
   </ul>
   <div id="col-2-tab-1">
   <article>
    <div id="apgexp-result"></div>
   </article>
  </div>
  </div>
  <div id="col-3">
   <ul>
    <li><a href="#col-3-tab-1">RegExp</a></li>
   </ul>
   <div id="col-3-tab-1">
   <article>
    <div id="regexp-result"></div>
   </article>
   </div>
  </div>
  </div>

            
          
!
            
              /* Pen-specific styles */
* {
  box-sizing: border-box;
}

body {
  color: #000;
  font-size: .8rem;
  line-height: 150%;
}

h1 {
  font-size: 1.75rem;
  line-height: 100%;
  margin: 0 0 0.75rem 0;
  font-family: 'Open Sans', sans-serif;
  font-weight: 700;
}

h2 {
  font-family: 'Open Sans', sans-serif;
  font-weight: 700;
}

article {
  font-family: 'Open Sans', sans-serif;
  font-weight: 400;
}

b {
  font-family: 'Open Sans', sans-serif;
  font-weight: 700;
}

i {
  font-family: 'Open Sans', sans-serif;
  font-style: italic;
}

textarea {
  width: 100%;
}

button {
  cursor: pointer;
  cursor: hand;
}

p.title {
  margin: 0px 0px 3px 0px;
}

a.link {
  color: #4284B0;
}

a.link:visited {
  color: #9c4be7;
}

/* Pattern styles */
#css-table {
	display: table;
}

#col-1 {
	display: table-cell;
	width: 30%;
	border: 1px solid #4284B0;
}

#col-2 {
	display: table-cell;
	width: 35%;
	border-width: 1px 0px;
	border-style: solid;
	border-color: #4284B0;
}

#col-3 {
	display: table-cell;
	width: 35%;
	border: 1px solid #4284B0;
}

textarea.input {
	font-size: .9rem;
	font-family: monospace;
}

#regexp-def, #apgexp-def, #email-address {
	width: 95%;
}

#regexp-def {
	height: 5em;
}

#apgexp-def {
	height: 19em;
}

.tryit {
	font-size: 1em;
	width: 5rem;
	cursor: pointer;
	cursor: hand;
}

.discussion {
	display: inline;
	font-size: .9rem;
	line-height: 125%;
}

.title {
	margin: .25rem 0;
}
            
          
!
            
              var strings = {};
var $regexp, $apgexp, $email, $regresult, $apgresult;

// main function, execute pattern search
var execute = function() {
  executeApgExp();
  executeRegExp();
}
var executeApgExp = function(){
  var exp, result, output;
  try {
    exp = new ApgExp($apgexp.val());
    result = exp.exec($email.val());
    if (result) {
      output = result.toHtml();
    } else {
      output = "result: null\n";
      output = pre(output);
    }
  } catch (e) {
    if (e.name === "ApgExpError") {
      output = e.toHtml();
    } else if(e instanceof Error){
      output = "Error:\n";
      output += e.message;
      output = pre(output);
    }else{
      output = "unrecognized exception error:\n";
      output += e;
      output = pre(output);
    }
  }
  $apgresult.html(output);
}
var executeRegExp = function(){
  var exp, result, output;
  try {
    exp = new RegExp($regexp.val(), "i");
    result = exp.exec($email.val());
    if (result) {
      output = regToHtml(result);
    } else {
      output = pre("result: null");
    }
  } catch (e) {
    if(e instanceof Error){
      output = "RegExp syntax error: Error\n";
      output += e.message;
      output = pre(output);
    }else{
      output = "unrecognized exception error:\n";
      output += e;
      output = pre(output);
    }
  }
  $regresult.html(output);
}

// format RegExp result to HTML table
var regToHtml = function(result) {
  var html = "";
  var caption = "result:";
  html += '<table class="apg-left-table">\n';
  html += '<caption>' + caption + '</caption>\n';
  html += '<tr>';
  html += '<td>input</td>';
  html += '<td>' + result.input + '</td>';
  html += '</tr>\n';

  html += '<tr>';
  html += '<td>index</td>';
  html += '<td>' + result.index + '</td>';
  html += '</tr>\n';

  for (var i = 0; i < result.length; i += 1) {
    html += '<tr>';
    html += '<td>[' + i + ']</td>';
    html += '<td>' + result[i] + '</td>';
    html += '</tr>\n';
  }
  html += '</table>\n';
  return html;
}

// format text with HTML <pre> block
var pre = function(text) {
  var ret = "<pre>\n";
  ret += text;
  ret += "</pre>";
  return ret;
}
$(document).ready(function() {
  
  // RegExp regular expression
  strings.regexp = "^\\(?(\\d{3})\\D{0,3}(\\d{3})\\D{0,3}(\\d{4})$";

  // SABNF pattern syntax
  strings.apgexp  = 'phone-number = %^ ["("] area-code sep office-code sep subscriber %$\n';
  strings.apgexp += 'area-code    = 3digit                       ; 3 digits\n';
  strings.apgexp += 'office-code  = 3digit                       ; 3 digits\n';
  strings.apgexp += 'subscriber   = 4digit                       ; 4 digits\n';
  strings.apgexp += 'sep          = *3(%d32-47 / %d58-126 / %d9) ; 0-3 ASCII non-digits\n';
  strings.apgexp += 'digit        = %d48-57                      ; 0-9\n';

  // initial value for input string
  strings.input = "(333)555-1234";
  
  // jQuery values
  $regexp = $("#regexp-def");
  $apgexp = $("#apgexp-def");
  $email = $("#email-address");
  $regresult = $("#regexp-result");
  $apgresult = $("#apgexp-result");

  // page setup
  $("#col-1").tabs();
  $("#col-2").tabs();
  $("#col-3").tabs();
  $("#tryit").click(execute);
  $regexp.val(strings.regexp)
  $apgexp.val(strings.apgexp)
  $email.val(strings.input)
});

            
          
!
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