代码示例:(标识:eg_js_number_divide_string)
<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 数字</h1>

<p>用非数字字符串进行除法会得到 NaN(Not a Number):</p>

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

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

</body>
</html>
运行结果: