AI 编程工具xxxxxxxxxx<html><head><meta charset="utf-8"><title>高手教程(study.p2hp.com)</title></head><body><p>输入你的年龄并点击按钮:</p><input id="age" value="18" /><button onclick="myFunction()">点我</button><p id="demo"></p><script>function myFunction() { var age,voteable; age = document.getElementById("age").value; voteable = (age < 18) ? "太年轻而不能":"年龄够"; document.getElementById("demo").innerHTML = voteable + "投票";}</script></body></html>