标签归档:身份证

验证身份证号码JS源码分享学习

网上看到一个,直接点用 validId(num) 函数就行。。。代码贴出来分享学习

var powers=new Array("7","9","10","5","8","4","2","1","6","3","7","9","10","5","8","4","2");
    var parityBit=new Array("1","0","X","9","8","7","6","5","4","3","2");

    //校验18位的身份证号码
    function validId18(_id){
        _id=_id+"";
        var _num=_id.substr(0,17);
        var _parityBit=_id.substr(17);
        var _power=0;
        for(var i=0;i< 17;i++){
            //校验每一位的合法性
            if(_num.charAt(i)<'0'||_num.charAt(i)>'9'){
                return false;
                break;
            }else{
                //加权

                _power+=parseInt(_num.charAt(i))*parseInt(powers[i]);
                //设置性别

                if(i==16&&parseInt(_num.charAt(i))%2==0){
                    sex="female";
                }else{
                    sex="male";
                }
            }
        }
        //取模

        var mod=parseInt(_power)%11;
        if(parityBit[mod]==_parityBit){
            return true;
        }
        return false;
    }
    //校验15位的身份证号码

    function validId15(_id){
        _id=_id+"";
        for(var i=0;i<_id.length;i++){
            //校验每一位的合法性

            if(_id.charAt(i)<'0'||_id.charAt(i)>'9'){
                return false;
                break;
            }
        }
        var year=_id.substr(6,2);
        var month=_id.substr(8,2);
        var day=_id.substr(10,2);
        var sexBit=_id.substr(14);
        //校验年份位

        if(year<'01'||year >'90')return false;
        //校验月份

        if(month<'01'||month >'12')return false;
        //校验日

        if(day<'01'||day >'31')return false;
        return true;
    }

//这个可以验证15位和18位的身份证,并且包含生日和校验位的验证。

//如果有兴趣,还可以加上身份证所在地的验证,就是前6位有些数字合法有些数字不合法。

function validId(num)

{
	num = num.toUpperCase();
	//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。
	if (!(/(^\d{15}$)|(^\d{17}([0-9]|X)$)/.test(num)))
	{
		return false;
	}
	//校验位按照ISO 7064:1983.MOD 11-2的规定生成,X可以认为是数字10。
	//下面分别分析出生日期和校验位
	var len, re;
	len = num.length;
	if (len == 15)
	{
		re = new RegExp(/^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/);
		var arrSplit = num.match(re);
		//检查生日日期是否正确
		var dtmBirth = new Date('19' + arrSplit[2] + '/' + arrSplit[3] + '/' + arrSplit[4]);
		var bGoodDay;
		bGoodDay = (dtmBirth.getYear() == Number(arrSplit[2])) && ((dtmBirth.getMonth() + 1) == Number(arrSplit[3])) && (dtmBirth.getDate() == Number(arrSplit[4]));
		if (!bGoodDay)
		{
			return false;
		}
		else
		{
			//将15位身份证转成18位
			//校验位按照ISO 7064:1983.MOD 11-2的规定生成,X可以认为是数字10。
			var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
			var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
			var nTemp = 0, i;
			num = num.substr(0, 6) + '19' + num.substr(6, num.length - 6);
			for(i = 0; i < 17; i ++)
			{
				nTemp += num.substr(i, 1) * arrInt[i];
			}
			num += arrCh[nTemp % 11];
			return num;
		}
	}
	if (len == 18)
	{
		re = new RegExp(/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/);
		var arrSplit = num.match(re);
		//检查生日日期是否正确
		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)
		{
			return false;
		}
		else
		{
		//检验18位身份证的校验码是否正确。
		//校验位按照ISO 7064:1983.MOD 11-2的规定生成,X可以认为是数字10。
			var valnum;
			var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
			var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
			var nTemp = 0, i;
			for(i = 0; i < 17; i ++)
			{
			nTemp += num.substr(i, 1) * arrInt[i];
			}
			valnum = arrCh[nTemp % 11];
			if (valnum != num.substr(17, 1))
			{
				return false;
			}
			return num;
		}
	}
	return false;
}