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MurakamiShinyu/checkDevicePixelRatio.html

Last active January 3, 2023 01:24
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checkDevicePixelRatio.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Check devicePixelRatio</title>
<script>
window.onload = () => {
devicePixelRatioValue.textContent = window.devicePixelRatio;
actualBorderWidthValue.textContent = testBorder.getBoundingClientRect().height;
};
</script>
<style>
#testBorder { border-top: 0.001px solid; }
</style>
</head>
<body>
<p>window.devicePixelRatio: <span id="devicePixelRatioValue"></span></p>
<p>A very thin border (#testBorder { border-top: 0.001px solid; }):</p>
<div id="testBorder"></div>
<p>testBorder.getBoundingClientRect().height: <span id="actualBorderWidthValue"></span></p>
</body>
</html>
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