标签:last car div ring str dig asc one ntc
function isIdCardNo(num) { var factorArr = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1); var parityBit = new Array("1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2"); var varArray = new Array(); var intValue; var lngProduct = 0; var intCheckDigit; var intStrLen = num.length; var idNumber = num; // initialize if ((intStrLen != 15) && (intStrLen != 18)) { return false; } // check and set value for (i = 0; i < intStrLen; i++) { varArray[i] = idNumber.charAt(i); if ((varArray[i] < ‘0‘ || varArray[i] > ‘9‘) && (i != 17)) { return false; } else if (i < 17) { varArray[i] = varArray[i] * factorArr[i]; } } if (intStrLen == 18) { // check date var date8 = idNumber.substring(6, 14); if (isDate8(date8) == false) { return false; } // calculate the sum of the products for (i = 0; i < 17; i++) { lngProduct = lngProduct + varArray[i]; } // calculate the check digit intCheckDigit = parityBit[lngProduct % 11]; // check last digit if (varArray[17] != intCheckDigit) { return false; } } else { // length is 15 // check date var date6 = idNumber.substring(6, 12); if (isDate6(date6) == false) { return false; } } return true; }
标签:last car div ring str dig asc one ntc
原文地址:https://www.cnblogs.com/pxblog/p/10805288.html