callback-handle.html

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<!DOCTYPE html>

<meta charset="utf-8">

<title>AnimationTiming Test: FrameRequestCallback - valid callback handle</title>

<link rel="author" title="Intel" href="http://www.intel.com">

<link rel="help" href="https://html.spec.whatwg.org/multipage/#animation-frames">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<div id="log"></div>

<script>

  test(() => {

    let requestId = window.requestAnimationFrame(() => {});

    assert_greater_than(requestId, 0, "callback handle is a integer greater than zero");

  }, "Check window.requestAnimationFrame can return a valid callback handle");

</script>