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How to verify bank card account code sharing with js and jq

小云云Original: 2018-03-06 16:10:512723browse

This article mainly shares with you how to verify the bank card account code with js and jq. This article mainly shares it through the code. I hope it can help everyone.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf" />
<script type="text/javascript" src="js/jquery.1.8.3.min.js"></script>
<title>验证银行账号</title>
<style type="text/css">
<!--
.STYLE1 {color: #FF0000}
-->
</style>
<script language="javascript" type="text/javascript">
function check(){
var account = document.form1.account.value;
if (account.length < 16 || account.length > 19) {
alert("银行卡号长度必须在16到19之间");
//$("#accountInfo").html("银行卡号长度必须在16到19之间");
return false;
}
var num = /^\d*$/;  //全数字
if (!num.exec(account)) {
alert("银行卡号必须全为数字");
//$("#accountInfo").html("银行卡号必须全为数字");
return false;
}
//开头6位
var strBin="10,18,30,35,37,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,58,60,62,65,68,69,84,87,88,94,95,98,99";    
if (strBin.indexOf(account.substring(0, 2))== -1) {
alert("银行卡号开头6位不符合规范");
//$("#accountInfo").html("银行卡号开头6位不符合规范");
return false;
}
    var lastNum=account.substr(account.length-1,1);//取出最后一位（与luhm进行比较）
    var first15Num=account.substr(0,account.length-1);//前15或18位
    var newArr=new Array();
    for(var i=first15Num.length-1;i>-1;i--){    //前15或18位倒序存进数组
        newArr.push(first15Num.substr(i,1));
    }
    var arrJiShu=new Array();  //奇数位*2的积 <9
    var arrJiShu2=new Array(); //奇数位*2的积 >9
    var arrOuShu=new Array();  //偶数位数组
    for(var j=0;j<newArr.length;j++){
        if((j+1)%2==1){//奇数位
            if(parseInt(newArr[j])*2<9)
            arrJiShu.push(parseInt(newArr[j])*2);
            else
            arrJiShu2.push(parseInt(newArr[j])*2);
        }
        else //偶数位
        arrOuShu.push(newArr[j]);
    }
    var jishu_child1=new Array();//奇数位*2 >9 的分割之后的数组个位数
    var jishu_child2=new Array();//奇数位*2 >9 的分割之后的数组十位数
    for(var h=0;h<arrJiShu2.length;h++){
        jishu_child1.push(parseInt(arrJiShu2[h])%10);
        jishu_child2.push(parseInt(arrJiShu2[h])/10);
    }        
    var sumJiShu=0; //奇数位*2 < 9 的数组之和
    var sumOuShu=0; //偶数位数组之和
    var sumJiShuChild1=0; //奇数位*2 >9 的分割之后的数组个位数之和
    var sumJiShuChild2=0; //奇数位*2 >9 的分割之后的数组十位数之和
    var sumTotal=0;
    for(var m=0;m<arrJiShu.length;m++){
        sumJiShu=sumJiShu+parseInt(arrJiShu[m]);
    }
    for(var n=0;n<arrOuShu.length;n++){
        sumOuShu=sumOuShu+parseInt(arrOuShu[n]);
    }
    for(var p=0;p<jishu_child1.length;p++){
        sumJiShuChild1=sumJiShuChild1+parseInt(jishu_child1[p]);
        sumJiShuChild2=sumJiShuChild2+parseInt(jishu_child2[p]);
    }      
    //计算总和
    sumTotal=parseInt(sumJiShu)+parseInt(sumOuShu)+parseInt(sumJiShuChild1)+parseInt(sumJiShuChild2);
    //计算Luhm值
    var k= parseInt(sumTotal)%10==0?10:parseInt(sumTotal)%10;        
    var luhm= 10-k;
    if(lastNum==luhm){
    return true;
    }
    else{
    return false;
    }        
}
</script>
</head>
<body>
<form id="form1" name="form1" method="post" action="">
<p>账号：
    <input type="text" name="account" id="account" />
  <span class="STYLE1">* （19位数字）</span></p>
<p>    
    <input type="button" name="button" id="button" value="验证" onclick="check()" />
</p>
<!--<p id="accountInfo"></p>-->
</form>
</body>
</html>

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