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               <div id="css-table">
  <div id="col-1">
  <ul>
    <li><a href="#col-1-tab-1">Example 2</a></li>
  </ul>
  <div id="col-1-tab-1">
  <article>
   <h1>telephone number</h1>
   <p>
    <b>pattern:</b><br>
    <textarea class="input" id="apgexp-def" disabled></textarea>
   </p>
   <p>
    <b>phone number:</b><br>
    <textarea class="input" id="input-data"></textarea>
   </p>
    <p>
    <button id="tryit" class="tryit-button">try it</button><br>
    Experiment with some other phone number formats.
    It should accept most anything as separators.
    However, this phone number isn't protected against leading and trailing digits.
   </p>
    <p>
    <button id="leading" class="tryit-button">try it</button> with leading digits<br>
    <button id="trailing" class="tryit-button">try it</button> with trailing digits
    </p>
    <p>
    With leading or trailing digits it still finds a correct phone number in there,
    but if you are doing form validation this is probably not what you want.
    You probably only want a match if the entire string is a valid phone number.
    To accomplish this you need to add anchors at the beginning and ending of the pattern.
    </p>
    <p>
    <button id="anchors-add" class="tryit-button">add anchors</button> <button id="anchors-remove" class="tryit-button">remove anchors</button><br>
    </p>
    <p>
    Now it still matches a valid phone number and fails with leading and trailing digits.
    </p>
   <div class="discussion">
   </div>
  </article>
  </div>
  </div>
  <div id="col-2">
  <ul>
    <li><a href="#col-2-tab-1">result</a></li>
  </ul>
  <div id="col-2-tab-1">
  <article>
  <p>
  ApgExp provides a convenient display function for a quick look at the results.
  Given the set up:
  <pre>
var exp    = new ApgExp(pattern);
var result = exp.exec(string);
</pre>
simply use the function <code>result.toHtml()</code></p>
   <div id="apgexp-result"></div>
  </article>
  </div>
 </div>
  <div id="col-3">
  <ul>
    <li><a href="#col-3-tab-1">exp</a></li>
  </ul>
  <div id="col-3-tab-1">
  <article>
  <p>
  The ApgExp object retains information about the last match
  and has a convenient display function for a quick look at its values.
  Given the set up:
  <pre>
var exp    = new ApgExp(pattern);
var result = exp.exec(string);
</pre>
simply use the function <code>exp.toHtml()</code>  </p>
   <div id="apgexp-exp"></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;
	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;
}

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

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

#col-1 {
	display: table-cell;
	width: 40%;
	border: 1px solid #4284B0;
}

#col-2 {
  display: table-cell;
  width: 30%;
  border-width: 1px 0px;
  border-style: solid;
  border-color: #4284B0;
}

#col-3 {
  display: table-cell;
  width: 30%;
  border: 1px solid #4284B0;
}

button {
	font-size: 1em;
	font-weight: bold;
	cursor: pointer;
	cursor: hand;
	margin: 0px 0px 2px 0px;
}

button.tryit-button {
  width: 10rem;
}


#apgexp-def, #input-data {
	width: 95%;
	font-size: .9rem;
	font-family: monospace;
}

#apgexp-def {
	height: 15em;
}
            
          
!
            
              var strings = {};
var $result, $exp, $data, $abnf;

// main execution function
var execute = function() {
  var exp, result, output;
  exp = new ApgExp($abnf.val());
  result = exp.exec($data.val());
  if (result) {
    output = result.toHtml();
  } else {
    output = "<pre>result: null\n</pre>";
  }
  $exp.html(exp.toHtml());
  $result.html(output);
}

// default try-it button
var tryit = function(){
  execute();
}

// add leading digits try-it button
var leading = function(){
  $data.val(strings.leading);
  execute();
}

// add trailing digits try-it button
var trailing = function(){
  $data.val(strings.trailing);
  execute();
}

// switch to SABNF pattern with anchors
var add = function(){
  $abnf.val(strings.anchor);
}

//switch to SABNF pattern without anchors
var remove = function(){
  $abnf.val(strings.phone);
}

$(document).ready(function() {
  
  // phone number SABNF syntax (without anchors)
  strings.phone  = 'phone-number = ["("] area-code sep office-code sep subscriber\n';
  strings.phone += 'area-code    = 3digit                       ; 3 digits\n';
  strings.phone += 'office-code  = 3digit                       ; 3 digits\n';
  strings.phone += 'subscriber   = 4digit                       ; 4 digits\n';
  strings.phone += 'sep          = *3(%d32-47 / %d58-126 / %d9) ; 0-3 ASCII non-digits\n';
  strings.phone += 'digit        = %d48-57                      ; 0-9\n';

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

  // some input string phone numbers
  strings.input = "(333)555-1234";
  strings.leading = "22444-666-7777";
  strings.trailing = "(989)333-8888999";

  // jQuery values
  $result = $("#apgexp-result");
  $exp = $("#apgexp-exp");
  $data = $("#input-data");
  $abnf = $("#apgexp-def");

  // page setup
  $abnf.val(strings.phone);
  $data.val(strings.input);
  $("#tryit").click(execute);
  $("#anchors-add").click(add);
  $("#anchors-remove").click(remove);
  $("#leading").click(leading);
  $("#trailing").click(trailing);
  $("#col-1").tabs();
  $("#col-2").tabs();
  $("#col-3").tabs();
});

            
          
!
999px
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