小蚁上树<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <script type="text/javascript"> var n1 = parseInt(prompt("输个数")); var n2 = parseInt(prompt("再输个数")); //var sum = parseInt(n1) + parseInt(n2); var sum = n1 + n2; document.write("两个数相加的结果是"+sum); </script> </body> </html>
效果展示：
产生10以内随机数
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <script type="text/javascript"> document.write("<h1>恭喜你获得了"+Math.ceil(Math.random()*10)+"等奖</h1>") </script> </body> </html>
显示效果：按F5刷新就能看到效果
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