JS表单验证

// 检查是否为数字function checkIsInteger(str){ ???????if (str == ""){ ????????return false; ???????} ???????if (str.search(/^[0-9]+$/) < 0){ ????????return false; ???????} ???????else{ ????????return true; ???????}}//检查是否整数function CheckNum(str){ ???????if(!str || isNaN(str)){ ????????return false; ???????} ???????str=(str * 1).toString(); ???????if(str.indexOf(".") == -1){ ????????return false; ???????} ???????return true;}// 检查是否为有效的密码，密码只允许由ascii组成，此函数只在修改或注册密码时使用function checkValidPasswd(str){ ???????var reg = /^[x00-x7f]+$/; ???????if (! reg.test(str)){ ????????return false; ???????} ???????if (str.length < 6 || str.length > 16){ ????????return false; ???????} ???????return true;}// 检查是否为中文function isChn(str){ ???????var reg = /^[u4E00-u9FA5]+$/; ???????if(!reg.test(str)){ ????????return false; ???????} ???????return true;}// 检查是否为有效的真实姓名，只能含有中文或大写的英文字母function isValidTrueName(strName){ ???????var str = Trim(strName); ??//判断是否为全英文大写或全中文，可以包含空格 ???????var reg = /^[A-Z u4E00-u9FA5]+$/; ???????if(reg.test(str)){ ????????return false; ???????} ???????return true;}//检查邮箱function isEmail(str){ ???????var reg = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/; ???????return reg.test(str);}//检查电话号码function isTel(str){ ???????var reg=/^([0-9]|[\-])+$/g ; ???????if(str.length<7 || str.length>18){ ????????return false; ???????} ???????else{ ?????????return reg.exec(str); ???????}}//检查年龄function isAge(str){ ???????var mydate=new Date; ???????var now=mydate.getFullYear(); ???????if (str < now-60 || str > now-18){ ????????return false; ???????} ???????return true;}//是否为合法的日期格式:YYYY-MM-DDfunction isDateFormat(txt){ ???????if(txt==null || txt == ""){return false;} ???????else{ ????????var regex = /[0-9]{1,4}-[0-9]{1,2}-[0-9]{1,2}/; ????????if( regex.test(txt) ){ ?????????var noArr = txt.split("-"); ?????????var year = eval(noArr[0]); ?????????var month = eval(noArr[1]); ?????????var day = eval(noArr[2]); ?????????if ( year < 1 || month < 1 || month > 12 || day < 1 || day > 31) {return false;} ?????????if ((month == 4 || month == 6 || month == 9 || month == 11) && day > 30){return false;} ?????????if (month == 2){ ??????????if ((year % 4 != 0) && day > 29) { return false;} ??????????if (year % 4 == 0){ ???????????if(year % 100 == 0 && year % 400 != 0 && day > 29){return false;} ???????????else if (day > 28){ ????????????return false; ???????????} ??????????} ?????????} ?????????return false; ????????} ????????else{ ?????????return true; ????????} ???????}}//检测15位或18位的身份证号function isIdCardNum(txt){ ???????if(txt == null || txt == ""){ ????????return false; ???????} ???????var idNo = txt.toString(); ???????var len = idNo.length; ???????var reg; ???????var noArr; ???????var dateStr=""; ???????if(len != 15 && len != 18){ ????????return false; ???????} ???????else if(len == 15){ ????????reg = /(\d{3})(\d{3})(\d{2})(\d{2})(\d{2})(\d{3})/; ????????if(reg.test(idNo)==false){ ?????????return false; ????????} ????????else{ ?????????noArr = reg.exec(idNo); ?????????dateStr = "19"+noArr[3]+"-"+noArr[4]+"-"+noArr[5]; ?????????return isDateFormat(dateStr); ????????} ???????} ???????else{ ????????reg = /(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})([0-9xX]{1})/; ????????if(reg.test(idNo)==false){ ?????????return false; ????????} ????????else{ ?????????noArr = reg.exec(idNo); ?????????dateStr = noArr[7]+noArr[8]+noArr[9]+noArr[10]+"/"+noArr[11]+noArr[12]+"/"+noArr[13]+noArr[14]; ?????????if(isNaN(new Date(dateStr)) == false){ ??????????var wi = new Array(0,7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2); ??????????var amt = 0; ??????????var i; ??????????var chkNo = new Array("1","0","X","9","8","7","6","5","4","3","2"); ??????????for(i=1;i<18;i++){ ???????????amt += (noArr[i]*wi[i]); ??????????} ??????????return (chkNo[amt % 11] == noArr[18].toUpperCase()); ?????????} ?????????else{ ??????????return false; ?????????} ????????} ???????}}