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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Transitions Test: transition-duration - 0s(initial value)</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
<link rel="help" title="2.2. The 'transition-duration' Property" href="http://www.w3.org/TR/css3-transitions/#transition-duration-property">
<meta name="assert" content="Test checks that the initial value of 'transition-duration' property is '0s' which means the transition is immediate.">
<style>
div {
height: 100px;
transition-property: width;
transition-timing-function: linear;
width: 100px;
}
#ref1 {
background-color: yellow;
transition-duration: 2s;
}
#ref2 {
background-color: gray;
transition-duration: 0s;
}
#test {
background-color: blue;
}
</style>
<body>
<p>Click the 'Start' button below. Test passes if the width of yellow square grows smoothly but the gray and blue grow immediately.</p>
<div id="ref1"></div>
<div id="ref2"></div>
<div id="test"></div>
<button>Start</button>
<script>
(function() {
var button = document.querySelector("button"),
test = document.querySelector("#test"),
ref1 = document.querySelector("#ref1"),
ref2 = document.querySelector("#ref2")
button.addEventListener("click", function(evt) {
test.setAttribute("style", "width: 300px;");
ref1.setAttribute("style", "width: 300px;");
ref2.setAttribute("style", "width: 300px;");
}, false);
})();
</script>
</body>
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