html运行实例（eg_js_number_nan_divide

代码示例：（标识：eg_js_number_nan_divide_string）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 数字</h1>

<p>数字除以非数字字符串会成为 NaN (Not a Number)：</p>

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

<script>
document.getElementById("demo").innerHTML = 100 / "Apple";
</script>

</body>
</html>