<html> <head> </head> <body> //script type="text/javascript" src="/js/Index.js" <script type="text/javascript"> var x; x=5; document.write(x+"<br>");// y="5"; z=5; document.write(y+y+"<br>"); document.write(z+z+"<br>"); //switch语句 是date而不是data var d=new Date() theDay=d.getDay() switch(theDay) { case 5: document.write("Finally Friday") break case 6: document.write("Super Saturday") break case 0: document.write("Sleepy Sunday") break default: document.write("<br>I'm looking forward to this weekend!<br>") } //确认框 function show_confirm() { var r=confirm("Press a button!"); if(r=true) alert("You press OK!"); else alert("You press Cancel!"); } //提示框 function show_prompt() { var name=prompt("请输入您的名字","Bill Gates"); if(name!=null&&name!="") document.write("Hello! "+name+" how about today？"); } </script> <input type="button" onclick="show_confirm()" value="Show a confirm box"/> <p> 实际的脚本位于名为“xxx.js”的外部脚本中。 </p> //提示框 <input type="button" onclick="show_prompt()" value="显示提示框" /> </body> </html>