<!DOCTYPE html>
<html>
<body>
<p>在输入字段中输入 Banana、Orange 或 Apple，然后单击按钮。</p>
<p>switch 语句将根据您的输入执行一段代码。</p>
<input id="myInput" type="text">
<button onclick="myFunction()">试一试</button>
<p id="demo"></p>
<script>
function myFunction() { var text;
var fruits = document.getElementById("myInput").value;
switch(fruits) { case "Banana":
text = "Banana is good!";
break;
case "Orange":
text = "I am not a fan of orange.";
break;
case "Apple":
text = "How you like them apples?";
break;
default:
text = "I have never heard of that fruit...";
}
document.getElementById("demo").innerHTML = text;}
</script>
</body>
</html>