html运行实例（eg_js_arithmetric_exponent_math

代码示例：（标识：eg_js_arithmetric_exponent_math_pow）

<!DOCTYPE html>
<html>
<body>

<h1>Math.pow()</h1>

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

<script>
var x = 5;
document.getElementById("demo").innerHTML = Math.pow(x,2);
</script>

</body>
</html>