js银行卡luhm校验，验证银行卡号并返回开户行（三方插件和在线验证）

2020/03/18 2020/03/18 37°5 H5

方法一:本地验证【JS再附件里】

<!-- form 表单 -->
<div class="row cl">
    <label class="form-label col-xs-4 col-sm-2">开户银行</label>
    <div class="formControls col-xs-8 col-sm-9">
        <input type="hidden" name="b_name">
        <p id="b_name" style="color:red;margin-top:5px">输入卡号自行匹配</p>
    </div>
    <div class="col-xs-8 col-sm-6 col-xs-offset-4 col-sm-offset-2"> </div>
</div>

//依赖于js库，不要忘记引用，这里我就没有提供js库啦
<script src="./js/luhmCheck.js"></script>
<script src="./js/bankcard.js"></script>
 
<script>
$(function(){
    //银行卡验证
    $("input[name='b_card']").blur(function(){  
	if($("input[name='b_card']").val() != ""){	        	
            if($(".b_card").length < 15 || $(".b_card").length > 20) {
		alert("银行卡号长度必须在16到19之间！");
		return false;
	    }
	    var num = /^\d*$/; //全数字
	    if(!num.test($(".b_card").val())) {
		alert("银行卡号必须全为数字！");
		return false;
	    }
	    //开头6位
	    var strBin ="10,18,30,35,37,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,58,60,62,65,68,69,84,87,88,94,95,98,99";
	    if(strBin.indexOf($(".b_card").val().substring(0,2)) == -1) {
		alert("银行卡号开头6位不符合规范！");
		return false;
	    }
	    //Luhm校验（新） luhmCheck()是验证银行卡号码正误的
	    if(!luhmCheck($(".b_card").val())){
		alert("银行卡号码有误！");
		return false;
	    }else{
               //这里是展示给用户看得银行卡开户名以及传递给表单隐藏域的bankCardAttribution()方法就是自动匹配开户银行的
		var b_name = bankCardAttribution($(".b_card").val());
                $("input[name='b_name']").val(b_name['bankName']);
                $("#b_name").text(b_name['bankName']); 
	    }
	}else{
	    alert("请输入银行卡号码！");
	    return false;           
	}  
    });
});
</script>

这里是两个js包的下载地址：链接：https://pan.baidu.com/s/1vDxGAwEV9jSM8_WSaD1UVQ
提取码：m3y7

方法二：在线调用支付宝验证接口验证，这种方法可以避免银行新增的时候我们本地插件不完整这种情况发生

<input type="text" name="bank" id="bank" autocomplete="off" class="layui-input">

//银行卡验证
$("#bank").blur(function(){
     var value = $(this).val(); //获取当前输入框的值
     $.post("https://ccdcapi.alipay.com/validateAndCacheCardInfo.json",{cardNo:value,cardBinCheck:'true'},function(res){		    
	 //console.log(res); //不清楚返回值的打印出来看
         //{"cardType":"DC","bank":"ICBC","key":"622200****412565805","messages":[],"validated":true,"stat":"ok"}
	 if(res.validated){
	   layer.msg('银行卡号正确',{icon:6});
	   return true; 
	 }else{
	   layer.msg('银行卡号错误',{icon:5});
	   setTimeout($("#bank").focus(),1); //获取焦点                   
	   return false;  
	 }
     },'json'); 
});
 
//银行及其简称，注意数组式json格式哈，取值方法略需修改
var bankList = {PSBC: "中国邮政储蓄银行",  ICBC: "中国工商银行", ABC: "中国农业银行",  BOC: "中国银行", 
    CCB: "中国建设银行",    
    COMM: "中国交通银行",      
    CMB: "招商银行",
    CMBC: "中国民生银行",
    CEB: "中国光大银行",
    CITIC: "中信银行",
    HXBANK: "华夏银行",
    SPABANK: "深发/平安银行",
    CIB: "兴业银行",
    SHBANK: "上海银行",      
    SPDB: "浦东发展银行",
    GDB: "广发银行",
    BOHAIB: "渤海银行",
    GCB: "广州银行",
    JHBANK: "金华银行",
    WZCB: "温州银行",
    HSBANK: "徽商银行",
    JSBANK: "江苏银行",
    NJCB: "南京银行",
    NBBANK: "宁波银行",
    BJBANK: "北京银行",
    BJRCB: "北京农村商业银行",
    HSBC: "汇丰银行",
    SCB: "渣打银行",
    CITI: "花旗银行",
    HKBEA: "东亚银行",
    GHB: "广东华兴银行",
    SRCB: "深圳农村商业银行",
    GZRCU: "广州农村商业银行股份有限公司",
    DRCBCL: "东莞农村商业银行",
    BOD: "东莞市商业银行",
    GDRCC: "广东省农村信用社联合社",
    DSB: "大新银行",
    WHB: "永亨银行",
    DBS: "星展银行香港有限公司",
    EGBANK: "恒丰银行",
    TCCB: "天津市商业银行",
    CZBANK: "浙商银行",
    NCB: "南洋商业银行",
    XMBANK: "厦门银行",
    FJHXBC: "福建海峡银行",
    JLBANK: "吉林银行",
    HKB: "汉口银行",
    SJBANK: "盛京银行",
    DLB: "大连银行",
    BHB: "河北银行",
    URMQCCB: "乌鲁木齐市商业银行",
    SXCB: "绍兴银行",
    CDCB: "成都商业银行",
    FSCB: "抚顺银行",
    ZZBANK: "郑州银行",
    NXBANK: "宁夏银行",
    CQBANK: "重庆银行",
    HRBANK: "哈尔滨银行",
    LZYH: "兰州银行",
    QDCCB: "青岛银行",
    QHDCCB: "秦皇岛市商业银行",
    BOQH: "青海银行",
    TZCB: "台州银行",
    CSCB: "长沙银行",
    BOQZ: "泉州银行",
    BSB: "包商银行",
    DAQINGB: "龙江银行",
    SHRCB: "上海农商银行",
    ZJQL: "浙江泰隆商业银行",
    H3CB: "内蒙古银行",
    BGB: "广西北部湾银行",
    GLBANK: "桂林银行",
    DAQINGB: "龙江银行",
    CDRCB: "成都农村商业银行",
    FJNX: "福建省农村信用社联合社",
    TRCB: "天津农村商业银行",
    JSRCU: "江苏省农村信用社联合社",
    SLH: "湖南农村信用社联合社",
    JXNCX: "江西省农村信用社联合社",
    SCBBANK: "商丘市商业银行",
    HRXJB: "华融湘江银行",
    HSBK: "衡水市商业银行",
    CQNCSYCZ: "重庆南川石银村镇银行",
    HNRCC: "湖南省农村信用社联合社",
    XTB: "邢台银行",
    LPRDNCXYS: "临汾市尧都区农村信用合作联社",
    DYCCB: "东营银行",
    SRBANK: "上饶银行",
    DZBANK: "德州银行",
    CDB: "承德银行",
    YNRCC: "云南省农村信用社",
    LZCCB: "柳州银行",
    WHSYBANK: "威海市商业银行",
    HZBANK: "湖州银行",
    BANKWF: "潍坊银行",
    GZB: "赣州银行",
    RZGWYBANK: "日照银行",
    NCB: "南昌银行",
    GYCB: "贵阳银行",
    BOJZ: "锦州银行",
    QSBANK: "齐商银行",
    RBOZ: "珠海华润银行",
    HLDCCB: "葫芦岛市商业银行",
    HBC: "宜昌市商业银行",
    HZCB: "杭州商业银行",
    JSBANK: "苏州市商业银行",
    LYCB: "辽阳银行",
    LYB: "洛阳银行",
    JZCBANK: "焦作市商业银行",
    ZJCCB: "镇江市商业银行",
    FGXYBANK: "法国兴业银行",
    DYBANK: "大华银行",
    DIYEBANK: "企业银行",
    HQBANK: "华侨银行",
    HSB: "恒生银行",
    LSB: "临沂商业银行",
    YTCB: "烟台商业银行",
    QLB: "齐鲁银行",
    BCCC: "BC卡公司",
    CYB: "集友银行",
    TFB: "大丰银行",
    AEON: "AEON信贷财务亚洲有限公司",
    MABDA: "澳门BDA"
  }

谢谢您的助力！