基于javascript简单实现对身份证校验
本文实例介绍了javascript简单实现对身份证的校验的关键性代码,分享给大家供大家参考,具体内容如下
varvcity={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古", 21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏", 33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南", 42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆", 51:"四川",52:"贵州",53:"云南",54:"西藏",61:"陕西",62:"甘肃", 63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外" }; checkCard=function(card) { //是否为空 if(card==='') { return"请输入身份证号,身份证号不能为空"; } //校验长度,类型 if(isCardNo(card)===false) { return"您输入的身份证号码不正确,请重新输入"; } //检查省份 if(checkProvince(card)===false) { return"您输入的身份证号码不正确,请重新输入"; } //校验生日 if(checkBirthday(card)===false) { return"您输入的身份证号码生日不正确,请重新输入"; } //检验位的检测 if(checkParity(card)===false) { return"您的身份证校验位不正确,请重新输入"; } return"ok"; }; //检查号码是否符合规范,包括长度,类型 isCardNo=function(card) { //身份证号码为15位或者18位,15位时全为数字,18位前17位为数字,最后一位是校验位,可能为数字或字符X varreg=/(^\d{15}$)|(^\d{17}(\d|X)$)/; if(reg.test(card)===false) { returnfalse; } returntrue; }; //取身份证前两位,校验省份 checkProvince=function(card) { varprovince=card.substr(0,2); if(vcity[province]==undefined) { returnfalse; } returntrue; }; //检查生日是否正确 checkBirthday=function(card) { varlen=card.length; //身份证15位时,次序为省(3位)市(3位)年(2位)月(2位)日(2位)校验位(3位),皆为数字 if(len=='15') { varre_fifteen=/^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/; vararr_data=card.match(re_fifteen); varyear=arr_data[2]; varmonth=arr_data[3]; varday=arr_data[4]; varbirthday=newDate('19'+year+'/'+month+'/'+day); returnverifyBirthday('19'+year,month,day,birthday); } //身份证18位时,次序为省(3位)市(3位)年(4位)月(2位)日(2位)校验位(4位),校验位末尾可能为X if(len=='18') { varre_eighteen=/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/; vararr_data=card.match(re_eighteen); varyear=arr_data[2]; varmonth=arr_data[3]; varday=arr_data[4]; varbirthday=newDate(year+'/'+month+'/'+day); returnverifyBirthday(year,month,day,birthday); } returnfalse; }; //校验日期 verifyBirthday=function(year,month,day,birthday) { varnow=newDate(); varnow_year=now.getFullYear(); //年月日是否合理 if(birthday.getFullYear()==year&&(birthday.getMonth()+1)==month&&birthday.getDate()==day) { //判断年份的范围(3岁到100岁之间) vartime=now_year-year; if(time>=3&&time<=100) { returntrue; } returnfalse; } returnfalse; }; //校验位的检测 checkParity=function(card) { //15位转18位 card=changeFivteenToEighteen(card); varlen=card.length; if(len=='18') { vararrInt=newArray(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2); vararrCh=newArray('1','0','X','9','8','7','6','5','4','3','2'); varcardTemp=0,i,valnum; for(i=0;i<17;i++) { cardTemp+=card.substr(i,1)*arrInt[i]; } valnum=arrCh[cardTemp%11]; if(valnum==card.substr(17,1)) { returntrue; } returnfalse; } returnfalse; }; //15位转18位身份证号 changeFivteenToEighteen=function(card) { if(card.length=='15') { vararrInt=newArray(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2); vararrCh=newArray('1','0','X','9','8','7','6','5','4','3','2'); varcardTemp=0,i; card=card.substr(0,6)+'19'+card.substr(6,card.length-6); for(i=0;i<17;i++) { cardTemp+=card.substr(i,1)*arrInt[i]; } card+=arrCh[cardTemp%11]; returncard; } returncard; };
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