1.警告框 <html> <head> <script type="text/javascript"> function disp_alert() { alert("我是警告框！！") } </script> </head> <body> <input type="button" onclick="disp_alert()" value="显示警告框" /> </body> </html> 2.确定取消框 <html> <head> <script type="text/javascript"> function disp_confirm() { var r=confirm("按下按钮") if (r==true) { document.write("您按了确认！") } else { document.write("您按了取消！") } } </script> </head> <body> <input type="button" onclick="disp_confirm()" value="显示确认框" /> </body> </html> 3.有输入的框 <html> <head> <script type="text/javascript"> function disp_prompt() { var name=prompt("请输入您的名字","Bill Gates") if (name!=null && name!="") { document.write("你好！" + name + " 今天过得怎么样？") } } </script> </head> <body> <input type="button" onclick="disp_prompt()" value="显示提示框" /> </body> </html>