1-18练习

    <script type="text/javascript">
        var num=prompt("请输入需要转换的数字："),
            message;
            warning;
        switch(num){
            case "0":
            message="零";
            break;
            case "1":
            message="壹";
            break;
            case "2":
            message="贰";
            break;
            case "3":
            message="叁";
            break;
            case "4":
            message="肆";
            break;
            case "5":
            message="伍";
            break;
            case "6":
            message="陆";
            break;
            case "7":
            message="柒";
            break;
            case "8":
            message="捌";
            break;
            case "9":
            message="玖";
            break;
            default:
            warning="请输入正确的0-9数字！";  
        }
        if(num<0 || num>9 || isNaN(num)){
            document.write(warning);
        }else{
          document.write("【"+num+"】的大写为【"+message+"】");  
        }
    </script>