The rigorous judgment of ID number is accurate to the last place in the team

1. The calculation logic of the last digit of the ID number

How to calculate the last digit of the ID card number ：

1、 Put the ID number on the front 17 The digits are multiplied by different coefficients .

The coefficients from the first to the seventeenth are ：7－9－10－5－8－4－2－1－6－3－7－9－10－5－8－4－2.

2、 Will this 17 The result of multiplication of digits and coefficients is added .

3、 Add and divide by 11, See what the remainder is ？

4、 The remainder can only have 0－1－2－3－4－5－6－7－8－9－10 this 11 A digital .

The number of the last ID card corresponding to them is 1－0－X －9－8－7－6－5－4－3－2.( The remainder 0 Corresponding 1, remainder 1 Corresponding 0, remainder 2 Corresponding X…)

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Check the specific code

/** *  Verification rules of ID card  * @param {*} value  identity   Certificate No  * @return {*}  Return value  promise *  adopt then(res) res Accept  res It's the object { result:false,msg:" The length or format of your ID card is wrong "} * result:true  adopt  false  Failure  */


export function isCardID( value) {
    
	return new Promise((resolve,reject)=>{
    
		if (!/(^\d{15}$)|(^\d{17}(\d|X|x)$)/.test(value)) {
    
			resolve({
    result:false,msg:" The length or format of your ID card is wrong "})
		}
		// ID card City 
		var aCity = {
     11: " Beijing ", 12: " tianjin ", 13: " hebei ", 14: " shanxi ", 15: " Inner Mongolia ", 21: " liaoning ", 22: " Ji Lin ", 23: " heilongjiang ", 31: " Shanghai ", 32: " jiangsu ", 33: " Zhejiang ", 34: " anhui ", 35: " fujian ", 36: " jiangxi ", 37: " Shandong ", 41: " Henan ", 42: " hubei ", 43: " hunan ", 44: " guangdong ", 45: " guangxi ", 46: " hainan ", 50: " Chongqing ", 51: " sichuan ", 52: " guizhou ", 53: " yunnan ", 54: " Tibet ", 61: " shaanxi ", 62: " gansu ", 63: " qinghai ", 64: " ningxia ", 65: " xinjiang ", 71: " Taiwan ", 81: " Hong Kong ", 82: " Macau ", 91: " Abroad " };
		if (!aCity[parseInt(value.substr(0, 2))]) {
    
		  resolve({
    result:false,msg:" Your ID card is illegal "})
		}
		
		//  Date of birth verification 
		var sBirthday = (value.substr(6, 4) + "-" + Number(value.substr(10, 2)) + "-" + Number(value.substr(12, 2))).replace(/-/g, "/"),
		  d = new Date(sBirthday)
		if (sBirthday != (d.getFullYear() + "/" + (d.getMonth() + 1) + "/" + d.getDate())) {
    
		   resolve({
    result:false,msg:" The date of birth on the ID card is illegal "})
		}
		
		//  ID card number verification 
		var sum = 0,
		  weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2],
		  codes = "10X98765432"
		for (var i = 0; i < value.length - 1; i++) {
    
		  sum += value[i] * weights[i];
		}
		var last = codes[sum % 11]; // The last ID card number calculated. 
		if (value[value.length - 1] != last) {
    
		  resolve({
    result:false,msg:" The ID number you entered is illegal. "})
		}
		resolve({
    result:true,msg:" Certified as qualified "})
		
	})
  
}