html运行实例（jsck_comparison）-搜寻教程库

代码示例：（标识：jsck_comparison）

<!DOCTYPE html>
<html>
<body>

<p>输入您的年龄并点击按钮：</p>

<input id="age" value="18">

<button onclick="myFunction()">试一试</button>

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

<script>
function myFunction() {
  var age, voteable;
  age = document.getElementById("age").value;
  voteable = (age < 18) ? "Too young":"Old enough";
  document.getElementById("demo").innerHTML = voteable + " to vote.";
}
</script>

</body>
</html>