html运行实例（js_oper_not）-搜寻教程库

代码示例：（标识：js_oper_not）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 运算符</h1>

<h2>! 运算符</h2>

<p id="demo1"></p>
<p id="demo2"></p>

<script>
document.getElementById("demo1").innerHTML = (5 == 8);
document.getElementById("demo2").innerHTML = !(5 == 8);
</script>

</body>
</html>