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JavaScript Ticker

Beispiel: ohne großes Framework

Code:

ticker.htm HTML (2,43 kByte) 01.09.2015 22:59

<!DOCTYPE html >
<html lang="en">
  <head><meta charset="utf-8" />
    <title>Ticker</title>
    <script type="text/javascript">
      /* <![CDATA[ */
window.requestAnimFrame = (function(){
  return  window.requestAnimationFrame       ||
          window.webkitRequestAnimationFrame ||
          window.mozRequestAnimationFrame    ||
          function(callback){
            window.setTimeout(callback, 1000 / 60);
          };
})();

function getElementsByClassName(searchClass, tagName, domNode) {
  if (domNode == null) domNode = document;
  if (tagName == null) tagName = '*';
  var el = new Array();
  var tags = domNode.getElementsByTagName(tagName);
  var tcl = " "+searchClass+" ";
  for(var i=0,j=0; i<tags.length; i++) {
    var test = " " + tags[i].className + " ";
    if (test.indexOf(tcl) != -1) {
      el[j++] = tags[i];
    }
  };
  return el;
}

function jsTicker() {
}
jsTicker.prototype = {
  init: function(ticker) {
    var width = (ticker.style.width ? parseFloat(ticker.style.width, 10) : ticker.offsetWidth) + 15;
    var wrapper = document.createElement('div');
    wrapper.className = 'tickerWrapper';
    ticker.parentNode.insertBefore(wrapper, ticker);
    wrapper.appendChild(ticker);
    var clone = ticker.cloneNode(true);
    wrapper.appendChild(clone);
    var value = 0;
    var tick = function() {
      value--;
      if (value < -width) {
        value = 0;
        wrapper.appendChild(wrapper.childNodes[0]);
      };
      wrapper.childNodes[0].style.setProperty('left', value+'px');
      wrapper.childNodes[1].style.setProperty('left', width+value+'px');
      window.requestAnimFrame(tick);
    };
    window.requestAnimFrame(tick);
  }
}

function init() {
  var tickerList = getElementsByClassName("ticker", "div");
  for (var i=0; i<tickerList.length; i++) {
    var ticker = new jsTicker();
    ticker.init(tickerList[i]);     
  };
}
function ready(f){/complete|loaded/i.test(document.readyState)?f():setTimeout("ready("+f+")",9)}
ready(init);
/* ]]> */
    </script>
    <style>
      .tickerWrapper{border:1px solid black; width:400px; height:18px; overflow:hidden; position:relative; white-space:nowrap;}
      .ticker{display:inline-block; position:absolute; top:0;}
      .ticker a{text-decoration:none;}
    </style>
  </head>
  <body>
    <div class="ticker"><a href="/Scheffau-2014">Bilder vom Urlaub in Scheffau am Wilden Kaiser 2014</a></div>
  </body>
</html>