html运行实例（eg_js_math_constants）-搜寻教程库

代码示例：（标识：eg_js_math_constants）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 数学常量</h1>

<p id="demo"></p>

<script>
document.getElementById("demo").innerHTML = 
"<p><b>Math.E:</b> " + Math.E + "</p>" +
"<p><b>Math.PI:</b> " + Math.PI + "</p>" +
"<p><b>Math.SQRT2:</b> " + Math.SQRT2 + "</p>" +
"<p><b>Math.SQRT1_2:</b> " + Math.SQRT1_2 + "</p>" +
"<p><b>Math.LN2:</b> " + Math.LN2 + "</p>" +
"<p><b>Math.LN10:</b> " + Math.LN10 + "</p>" +
"<p><b>Math.LOG2E:</b> " + Math.LOG2E + "</p>" +
"<p><b>Math.Log10E:</b> " + Math.LOG10E + "</p>";
</script>

</body>
</html>