dom/base/test/intersectionobserver_window.html
author Tobias Schneider <schneider@jancona.com>
Fri, 28 Oct 2016 10:24:00 -0400
changeset 320201 72e781308ebf6a06c65a4400c28c4ad813bd1081
parent 319616 abaf54d32b12058820d8a5be414866962e4495ca
permissions -rw-r--r--
Bug 1243846 - Implement Intersection Observer API. r=mrbkap, r=mstange

<!DOCTYPE HTML>
<html>
<head>
<style>
#target5 {
        position: absolute;
        top: 0px;
        left: 0px;
        width: 20px;
        height: 20px;
        background: #f00;
}
</style>
<body>
<div id="target"></div>
<script>
        var io = new IntersectionObserver(function(records) {
          var viewportWidth =
              document.documentElement.clientWidth || document.body.clientWidth;
          var viewportHeight =
              document.documentElement.clientHeight || document.body.clientHeight;
          var passed = records.length === 1 &&
                       records[0].rootBounds.top === 0 &&
                       records[0].rootBounds.left === 0 &&
                       records[0].rootBounds.right === viewportWidth &&
                       records[0].rootBounds.width === viewportWidth &&
                       records[0].rootBounds.bottom === viewportHeight &&
                       records[0].rootBounds.height === viewportHeight;
          window.opener.postMessage(passed, '*');
        });
        io.observe(document.getElementById("target"));
</script>
</body>
</html>