Verify the implementation code of the bank card number in JavaScript, and verify the javascript code

Verify the implementation code of the bank card number in JavaScript, and verify the javascript code

1. Introduce jquery. js first

2. Introduce luhmCheck. js // Luhm verification of the bank card number.

3. See the following case:

<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
Below is the js
<Script type = "text/javascript"> function CheckBankNo (t_bankno) {var bankno = $. trim (t_bankno.val (); if (bankno = "") {$ ("# banknoInfo" ).html ("enter the bank card number"); return false;} if (bankno. length <16 | bankno. length> 19) {$ ("# banknoInfo" ).html ("the length of the bank card number must be between 16 and 19"); return false ;} var num =/^ \ d * $/; // full number if (! Num.exe c (bankno) {$ ("# banknoInfo" ).html ("bank card numbers must all be numbers"); return false ;}// the first six digits var strBin = ", 18, 30,35, 37,40, 41,42, 43,44, 45,46, 47,48, 5E, 51,52, 53,54, 55,56, 58,60, 62,65, 68,69, 84,87, 88,94, 95,98, 99. indexOf (bankno. substring (0, 2) =-1) {$ ("# banknoInfo" ).html ("the first six digits of the bank card number do not comply with the specifications"); return false ;} // Luhm check (new) if (! LuhmCheck (bankno) return false; $ ("# banknoInfo" ).html ("verified! "); Return true ;}</script>
Test card No:
1. 6222600810010710887
2. 6225881414207430
The above is the implementation code for verifying the bank card number in JavaScript introduced by xiaobian. I hope it will be helpful to you. If you have any questions, please leave a message and I will reply to you in a timely manner. Thank you very much for your support for the help House website!