W3School TIY Editor
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<!DOCTYPE html> <html> <body> <p>单击按钮以显示对话框，询问您最喜欢的饮料。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var text; var favDrink = prompt("What's your favorite cocktail drink?", "Daiquiri"); switch(favDrink) { case "Martini": text = "Excellent choice. Martini is good for your soul."; break; case "Daiquiri": text = "Daiquiri is my favorite too!"; break; case "Cosmopolitan": text = "Really? Are you sure the Cosmopolitan is your favorite?"; break; default: text = "I have never heard of that one.."; } document.getElementById("demo").innerHTML = text; } </script> </body> </html>