常用js校验

function isCardNo(idCard){ ????//15位和18位身份证号码的正则表达式 ????var regIdCard=/^(^[1-9]\d{7}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}$)|(^[1-9]\d{5}[1-9]\d{3}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])((\d{4})|\d{3}[Xx])$)$/; ????//如果通过该验证，说明身份证格式正确，但准确性还需计算 ????if(regIdCard.test(idCard)){ ?????if(idCard.length==18){ ??????var idCardWi=new Array( 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 ); //将前17位加权因子保存在数组里 ??????var idCardY=new Array( 1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2 ); //这是除以11后，可能产生的11位余数、验证码，也保存成数组 ??????var idCardWiSum=0; //用来保存前17位各自乖以加权因子后的总和 ??????for(var i=0;i<17;i++){ ???????idCardWiSum+=idCard.substring(i,i+1)*idCardWi[i]; ??????} ??????var idCardMod=idCardWiSum%11;//计算出校验码所在数组的位置 ??????var idCardLast=idCard.substring(17);//得到最后一位身份证号码 ??????//如果等于2，则说明校验码是10，身份证号码最后一位应该是X ??????if(idCardMod==2){ ???????if(idCardLast=="X"||idCardLast=="x"){ ????????????return true; ???????}else{ ???????????return false; ???????} ??????}else{ ???????//用计算出的验证码与最后一位身份证号码匹配，如果一致，说明通过，否则是无效的身份证号码 ???????if(idCardLast==idCardY[idCardMod]){ ????????????return true; ???????}else{ ???????????return false; ???????} ??????} ?????} ?????}else{ ????????return false; ????} ???}

function IsNumber(string,info){ ????var number; ???if (string==null){ ???????alert(info+"只能输入数字"); ???????return false; ????} ???number = new Number(string); ????if (isNaN(number)) ????{ ????????alert(info+"只能输入数字"); ???????return false; ????}else{ ???????return true; ???}}

function checkEmail(email){ ???????var reEmail = /^([A-Za-z0-9])(\w)+@(\w)+(\.)(com|com\.cn|net|cn|net\.cn|org|biz|info|gov|gov\.cn|edu|edu\.cn)/; ???????if (!email.match(reEmail)&&email!="") ???????{ ???????????????alert(‘Email格式不对!‘); ???????????????return true; ???????} ???????else ????????{ ???????return false; ???????}}

//----------------------------------------------------空格判断function isWhitespace (s){ ????var whitespace = " \t\n\r"; ???var i; ???for (i = 0; i < s.length; i++) ???{ ????????var c = s.charAt(i); ???????if (whitespace.indexOf(c) >= 0) ????????{ ???????return true; ???????} ???} ???????return false;}

//--------------------------------------------------检验字符（限制不能输入的字符）function ischar(s){ ???var errorChar; ???var badChar = "><,[]{}?/+=|\\‘\":;~!@#$%^&()`"; ????????if ( s == "" ) ???{ ???????alert("请您输入内容！") ???????return false; ???} ???????if ( isWhitespace(s) ) ???{ ???????alert("输入的字符中不能包含空格符，请重新输入！"); ????????return false; ???} ???return true;}

//日期function redate(s){ ???s=s.split("-"); ???s=s[0].replace("\-","")+s[1].replace("\-","")+s[2].replace("\-",""); ???return s;}

function checkIdNo(sId){ ???if(!/^\d{17}(\d|[x])$/i.test(sId)){ ?????????alert("请输入正确的证件号码码!"); ????????return ??false; ??????} ??????return true;}