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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Transitions Test: transition-timing-function - 'ease' equivalent to 'cubic-bezier(0.25, 0.1, 0.25, 1.0)'</title>
<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
<link rel="help" title="2.3. The 'transition-timing-function' Property" href="https://www.w3.org/TR/css-transitions-1/#transition-timing-function-property">
<meta name="assert" content="The 'transition-timing-function' property set 'ease' is equivalent to cubic-bezier(0.25, 0.1, 0.25, 1.0)">
<style>
div {
height: 100px;
transition: width 2s;
width: 100px;
}
#test1 {
background-color: blue;
transition-timing-function: ease;
}
#test2 {
background-color: yellow;
transition-timing-function: cubic-bezier(0.25, 0.1, 0.25, 1.0);
}
</style>
<body>
<p>Click the 'Start' button. Test passes if the width growth of blue square is <strong>equivalent</strong> to the yellow square.</p>
<div id="test1"></div>
<div id="test2"></div>
<button>Start</button>
<script>
(function() {
var button = document.querySelector("button");
button.addEventListener("click", function(evt) {
var test1 = document.querySelector("#test1"),
test2 = document.querySelector("#test2");
test1.setAttribute("style", "width: 300px");
test2.setAttribute("style", "width: 300px");
}, false);
})();
</script>
</body>