html运行实例（js_arithmetic_precedence

代码示例：（标识：js_arithmetic_precedence_1）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 算术</h1>

<h2>运算符优先级</h2>

<p>乘法优先于加法。</p>

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

<script>
document.getElementById("demo").innerHTML = 100 + 50 * 3;
</script>

</body>
</html>