javascript 常用验证正则表达试

 switch (type) {
                    case "empty":
                        result = writeMsg(id, msg, (val == ''));
                        break;
                    case "number":
                        //result = writeMsg(id, msg, (isNaN(val)));/*是否是数字*/
                        var patrn = /^[0-9]+$/;
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "double":
                        var patrn = /^[0-9.]+$/;
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "date":
                        var patrn = /^(d{1,4})(-|/)(d{1,2})2(d{1,2})$/;/*YYYY-MM-DD*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "time":
                        var patrn = /^((20|21|22|23|[0-1]d):[0-5][0-9])(:[0-5][0-9])?$/;/*hh:mm:ss*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "datetime":
                        var patrn = /^(d{1,4})(-|/)(d{1,2})2(d{1,2}) (d{1,2}):(d{1,2}):(d{1,2})$/;/*YYYY-MM-DD hh:mm:ss*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "url":
                        var patrn = /^http(s)?://([w-]+.)+[w-]+(/[w- ./?%&=]*)?$/;/*网址*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "email":
                        var patrn = /^w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*$/;/*邮件*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "identity":
                        var patrn = /^d{17}[d|X]|d{15}$/;/*身份证号*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "ip":
                        var patrn = /^(((d{1,2})|(1d{2})|(2[0-4]d)|(25[0-5])).){3}((d{1,2})|(1d{2})|(2[0-4]d)|(25[0-5]))$/;
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "zip":
                        var patrn = /^d{6}$/;/*邮编*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "qq":
                        var patrn = /^[1-9][0-9]{4,}$/;
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "phone":
                        var patrn = /^d{3}-d{8}|d{4}-d{7,8}|d{11}|d{12}$/;/*电话*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "mobile":
                        var patrn = /^(13|15|18)d{9}$/;/*手机*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "string":
                        var patrn = /^[a-zA-Z0-9_]+$/;/*a-z,A-Z,0-9 */
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "image":
                        var patrn = /(.jpg|.gif|.bmp|.png|.img|.swf)$/;/*图片扩展名*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "html":
                        var patrn = /(.htm|.html|.shtml)$/;
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "chinese":
                        var patrn = /^[u0391-uFFE5]+$/;/*中文*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                    case "userorpwd":
                        var patrn = /^[A-Za-z0-9]{6,20}$/;/*6-20位;只限数字(0-9)和英文(a-z),不区分大小写*/
                        result = writeMsg(id, msg, (regular(val, patrn)));
                        break;
                }