js判斷身份證是否合法

//校驗位按照iso 7064:1983.mod 11-2的規定生成，x可以認為是數字10。

//下面分別分析出生日期和校驗位

var len, re;

len = num.length;

if (len == 15) )(\d)(\d)(\d)(\d)$/);

var arrsplit = num.match(re);

//檢查生日日期是否正確

var dtmbirth = new date('19' + arrsplit[2] + '/' + arrsplit[3] + '/' + arrsplit[4]);

var bgoodday;

bgoodday = (dtmbirth.getyear() == number(arrsplit[2])) && ((dtmbirth.getmonth() + 1) == number(arrsplit[3])) && (dtmbirth.getdate() == number(arrsplit[4]));

if (!bgoodday)

else

num += arrch[ntemp % 11];

return true;}}

if (len == 18) )(\d)(\d)(\d)(\d)([0-9]|x)$/);

var arrsplit = num.match(re);

//檢查生日日期是否正確

var dtmbirth = new date(arrsplit[2] + "/" + arrsplit[3] + "/" + arrsplit[4]);

var bgoodday;

bgoodday = (dtmbirth.getfullyear() == number(arrsplit[2])) && ((dtmbirth.getmonth() + 1) == number(arrsplit[3])) && (dtmbirth.getdate() == number(arrsplit[4]));

if (!bgoodday)

else

valnum = arrch[ntemp % 11];

if (valnum != num.substr(17, 1))

return true;}}

return false;