example/simple-javascript/transformer.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Microdata Template: Example: Transformers</title>
  <link rel="icon" href="data:,">
  <script src="../../lib/microdata-template.js" crossorigin="anonymous"></script>
  <style>
    body {
      font-family: sans-serif;
    }
    section {
      width: 36%;
      margin: 3em auto;
    }
    blockquote {
      padding: 8px;
      border-bottom: 1px dotted orangered;
      color: #0776A2;
    }
    blockquote:hover {
      background-color: #eeeedd;
    }
    blockquote h5 {
      margin: 0;
    }
    blockquote p {
      margin: 1em;
      font-size: larger;
      line-height: 1.3;
      color: black;
    }
    blockquote time {
      display: inline-block;
      width: 100%;
      text-align: right;
      font-size: smaller;
      color: lightsteelblue;
    }
    a {
      color: #0776A2;
      border-bottom: 1px solid lightsteelblue;
      text-decoration: none;
    }
    a:visited {
      color: lightsteelblue;
    }
    blockquote:hover a {
      color: #0776A2;
    }
  </style>
</head>
<body>
<main>
  <article>
    <section>
      <blockquote itemscope itemid="{{ id }}" itemtype="https://schema.org/UserTweets" hidden>
        <h5 itemprop="tweet"><a href="{{ combineString:('http://twitter.com/', user.screen_name, '/status/', id) }}">{{ concat:combineString:("@", user[screen_name], " tweeted from ", user.location) }}:</a></h5>
        <p itemprop="text">{{ tryThis|tryThat|text|"Sorry, that tweet wasn't found!" }}</p>
        <time itemprop="created_at" datetime="{{ parseDateToTimeValue:created_at }}">{{ formatDate:created_at }}</time>
      </blockquote>
    </section>
  </article>
</main>
<script>
  document.addEventListener("DOMContentLoaded", function() {

    // This code will load an adjacent data file and use it to draw a series of tweets.
    // Also, a custom transformer is employed for special formatting of date values.
    // Run this in a browser, and be sure to view the rendered source!

    var templater = window.MicrodataTemplate.init();
    var templateElement = document.getElementsByTagName("BLOCKQUOTE")[0];

    var ajax = function(endpoint, options, callback) {

      var request = new XMLHttpRequest();
      request.open("GET", endpoint, true);

      request.onload = function() {
        if (request.status >= 200 && request.status < 400) {

          // Success!
          if (!!callback && callback instanceof Function) {
            callback(JSON.parse(request.responseText)||{});
          }

        } else {

          // Error!
          alert("Sorry, but this example was unable to fetch data. (see console for details)");
          console.error(request.status, endpoint);

        }
      };

      request.onerror = function() {
        // There was a connection error of some sort
        alert("Sorry, but this example must run in a hosted environment attached to the internet.");
      };

      request.send();
    };

    ajax("../data/transformer.json", null, function(data) {

      templater.setTransformer("formatDate", function(value, index) {
        var time = Date.parse(value);
        var date = new Date(isNaN(time) ? isNaN(value) ? Date.now() : value : time);
        return date.toLocaleString();
      });

      if (!!data) {
        templater.render(templateElement, data);
      }

    });

  });
</script>
</body>
</html>