javascript 验证15 18位身份证号码
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML> <HEAD><SCRIPT LANGUAGE="JavaScript">function checkIdcard(idcard){var Errors=new Array("验证通过!","身份证号码位数不对!","身份证号码出生日期超出范围或含有非法字符!","身份证号码校验错误!","身份证地区非法!");var area={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"}var idcard,Y,JYM;var S,M;alert(idcard);var idcard_array = new Array();idcard_array = idcard.split("");//地区检验if(area[parseInt(idcard.substr(0,2))]==null) return Errors[4];//身份号码位数及格式检验switch(idcard.length){case 15:if ( (parseInt(idcard.substr(6,2))+1900) % 4 == 0 || ((parseInt(idcard.substr(6,2))+1900) % 100 == 0 && (parseInt(idcard.substr(6,2))+1900) % 4 == 0 )){ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$/;//测试出生日期的合法性} else {ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$/;//测试出生日期的合法性}if(ereg.test(idcard)) return Errors[0];else return Errors[2];break;case 18://18位身份号码检测//出生日期的合法性检查//闰年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))//平年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))if ( parseInt(idcard.substr(6,4)) % 4 == 0 || (parseInt(idcard.substr(6,4)) % 100 == 0 && parseInt(idcard.substr(6,4))%4 == 0 )){ereg=/^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$/;//闰年出生日期的合法性正则表达式} else {ereg=/^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$/;//平年出生日期的合法性正则表达式}if(ereg.test(idcard)){//测试出生日期的合法性//计算校验位S = (parseInt(idcard_array[0]) + parseInt(idcard_array[10])) * 7+ (parseInt(idcard_array[1]) + parseInt(idcard_array[11])) * 9+ (parseInt(idcard_array[2]) + parseInt(idcard_array[12])) * 10+ (parseInt(idcard_array[3]) + parseInt(idcard_array[13])) * 5+ (parseInt(idcard_array[4]) + parseInt(idcard_array[14])) * 8+ (parseInt(idcard_array[5]) + parseInt(idcard_array[15])) * 4+ (parseInt(idcard_array[6]) + parseInt(idcard_array[16])) * 2+ parseInt(idcard_array[7]) * 1+ parseInt(idcard_array[8]) * 6+ parseInt(idcard_array[9]) * 3 ;Y = S % 11;M = "F";JYM = "10X98765432";M = JYM.substr(Y,1);//判断校验位if(M == idcard_array[17]) return Errors[0]; //检测ID的校验位else return Errors[3];}else return Errors[2];break;default:return Errors[1];break;}}var sss = "370306830215053"document.write (checkIdcard(sss))</SCRIPT> </HEAD> <BODY> </BODY></HTML>