learning_jquery/Chapter 6/listings/6.15.js

$(document).ready(function() {
  $('#letter-a a').click(function(event) {
    event.preventDefault();
    $('#dictionary').load('a.html');
  });

  $('#letter-b a').click(function(event) {
    event.preventDefault();
    $.getJSON('b.json', function(data) {
      var html = '';
      $.each(data, function(entryIndex, entry) {
        html += '<div class="entry">';
        html += '<h3 class="term">' + entry.term + '</h3>';
        html += '<div class="part">' + entry.part + '</div>';
        html += '<div class="definition">';
        html += entry.definition;
        if (entry.quote) {
          html += '<div class="quote">';
          $.each(entry.quote, function(lineIndex, line) {
            html += '<div class="quote-line">' + line + '</div>';
          });
          if (entry.author) {
            html += '<div class="quote-author">' + entry.author + '</div>';
          }
          html += '</div>';
        }
        html += '</div>';
        html += '</div>';
      });
      $('#dictionary').html(html);
    });
  });

  $('#letter-c a').click(function(event) {
    event.preventDefault();
    $.getScript('c.js');
  });

  $('#letter-d a').click(function(event) {
    event.preventDefault();
    $.get('d.xml', function(data) {
      $('#dictionary').empty();
      $(data).find('entry').each(function() {
        var $entry = $(this);
        var html = '<div class="entry">';
        html += '<h3 class="term">' + $entry.attr('term');
          html += '</h3>';
        html += '<div class="part">' + $entry.attr('part');
          html += '</div>';
        html += '<div class="definition">';
        html += $entry.find('definition').text();
        var $quote = $entry.find('quote');
        if ($quote.length) {
          html += '<div class="quote">';
          $quote.find('line').each(function() {
            html += '<div class="quote-line">';
              html += $(this).text() + '</div>';
          });
          if ($quote.attr('author')) {
            html += '<div class="quote-author">';
              html += $quote.attr('author') + '</div>';
          }
          html += '</div>';
        }
        html += '</div>';
        html += '</div>';
        $('#dictionary').append($(html));
      });
    });
  });

  $('#letter-e a').click(function(event) {
    event.preventDefault();
    var requestData = {term: $(this).text()};
    $('#dictionary').load('e.php', requestData);
  });

  $('#letter-f form').submit(function(event) {
    event.preventDefault();
    var formValues = $(this).serialize();
    $.get('f.php', formValues, function(data) {
      $('#dictionary').html(data);
    });
  });

  var $loading = $('<div id="loading">Loading...</div>')
    .insertBefore('#dictionary');

  $(document).ajaxStart(function() {
    $loading.show();
  }).ajaxStop(function() {
    $loading.hide();
  });
});