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<!DOCTYPE html>
<html>
<style>
#myContainer {
  width: 400px;
  height: 400px;
  position: relative;
  background: yellow;
}
#myAnimation {
  width: 50px;
  height: 50px;
  position: absolute;
  background-color: red;
}
</style>
<body>
<p>
<button onclick="myMove()">Click Me</button> 
</p>
<div id ="myContainer">
<div id ="myAnimation"></div>
</div>
<script>
  var id = null;
  function myMove() {
    var elem = document.getElementById("myAnimation");
    var pos = 0;
    clearInterval(id);
    id = setInterval(frame, 10);
    function frame() {
      if (pos == 350) {
        clearInterval(id);
      } else {
        pos++;
        elem.style.top = pos + 'px';
        elem.style.left = pos + 'px';
      }
    }
  }
</script>
</body>
<!-- /howto/tryit.asp?filename=tryhow_js_animate_3 by HTTrack Website Copier/3.x [XR&CO'2014], Thu, 06 Feb 2025 18:50:23 GMT -->
</html>