[js实例] 验证身份证和姓名

js文件部分：

var vcity={ 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"
           };

checkCard = function()
{
    var truename=document.getElementById("yourname").value; 
    var reg = /^[\u4e00-\u9fa5]{2,4}$/i; 
    if (!reg.test(truename)) {
        alert("请输入真实姓名，只能是2-4个汉字！"); 
        document.getElementById(\'yourname\').focus();
    }
    else{
        var card = document.getElementById(\'card_no\').value;
        //是否为空
        if(card === \'\')
        {
            alert(\'请输入身份证号，身份证号不能为空\');
            document.getElementById(\'card_no\').focus();
            return false;
        }
        //校验长度，类型
        if(isCardNo(card) === false)
        {
            alert(\'您输入的身份证号码不正确，请重新输入\');
            document.getElementById(\'card_no\').focus();
            return false;
        }
        //检查省份
        if(checkProvince(card) === false)
        {
            alert(\'您输入的身份证号码不正确,请重新输入\');
            document.getElementById(\'card_no\').focus();
            return false;
        }
        //校验生日
        if(checkBirthday(card) === false)
        {
            alert(\'您输入的身份证号码生日不正确,请重新输入\');
            document.getElementById(\'card_no\').focus();
            return false;
        }
        //检验位的检测
        if(checkParity(card) === false)
        {
            alert(\'您的身份证校验位不正确,请重新输入\');
            document.getElementById(\'card_no\').focus();
            return false;
        }
        alert(\'身份证验证通过，可以注册\');
        return true;
    }
};


//检查号码是否符合规范，包括长度，类型
isCardNo = function(card)
{
    //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
    var reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/;
    if(reg.test(card) === false)
    {
        return false;
    }

    return true;
};

//取身份证前两位,校验省份
checkProvince = function(card)
{
    var province = card.substr(0,2);
    if(vcity[province] == undefined)
    {
        return false;
    }
    return true;
};

//检查生日是否正确
checkBirthday = function(card)
{
    var len = card.length;
    //身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字
    if(len == \'15\')
    {
        var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/; 
        var arr_data = card.match(re_fifteen);
        var year = arr_data[2];
        var month = arr_data[3];
        var day = arr_data[4];
        var birthday = new Date(\'19\'+year+\'/\'+month+\'/\'+day);
        return verifyBirthday(\'19\'+year,month,day,birthday);
    }
    //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X
    if(len == \'18\')
    {
        var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
        var arr_data = card.match(re_eighteen);
        var year = arr_data[2];
        var month = arr_data[3];
        var day = arr_data[4];
        var birthday = new Date(year+\'/\'+month+\'/\'+day);
        return verifyBirthday(year,month,day,birthday);
    }
    return false;
};

//校验日期
verifyBirthday = function(year,month,day,birthday)
{
    var now = new Date();
    var now_year = now.getFullYear();
    //年月日是否合理
    if(birthday.getFullYear() == year && (birthday.getMonth() + 1) == month && birthday.getDate() == day)
    {
        //判断年份的范围（3岁到100岁之间)
        var time = now_year - year;
        if(time >= 3 && time <= 100)
        {
            return true;
        }
        return false;
    }
    return false;
};

//校验位的检测
checkParity = function(card)
{
    //15位转18位
    card = changeFivteenToEighteen(card);
    var len = card.length;
    if(len == \'18\')
    {
        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 cardTemp = 0, i, valnum; 
        for(i = 0; i < 17; i ++) 
        { 
            cardTemp += card.substr(i, 1) * arrInt[i]; 
        } 
        valnum = arrCh[cardTemp % 11]; 
        if (valnum == card.substr(17, 1)) 
        {
            return true;
        }
        return false;
    }
    return false;
};

//15位转18位身份证号
changeFivteenToEighteen = function(card)
{
    if(card.length == \'15\')
    {
        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 cardTemp = 0, i;   
        card = card.substr(0, 6) + \'19\' + card.substr(6, card.length - 6);
        for(i = 0; i < 17; i ++) 
        { 
            cardTemp += card.substr(i, 1) * arrInt[i]; 
        } 
        card += arrCh[cardTemp % 11]; 
        return card;
    }
    return card;
};

 

html部分：

<div>
请输入姓名：
<input class="ipt" type="text" name="yourname" id="yourname">
请输入身份证号码：
<input name=\'card_no\' type=\'text\' id=\'card_no\' value=\'\' />
<input type=\'button\' name=\'submit\' value=\'click me\' onclick=\'javascript:checkCard();\' />  
</div>