Edit File: jquery.payment.min.js
jQuery(function(t){(function(){var e,n,r,a,i,o,l,u,s,c,h,p,f,g,v,d,m,y,C,T,w,$,D,S=[].slice,k=[].indexOf||function(t){for(var e=0,n=this.length;e<n;e++)if(e in this&&this[e]===t)return e;return-1};(t=window.jQuery||window.Zepto||window.$).payment={},t.payment.fn={},t.fn.payment=function(){var e,n;return 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n,r,a;if(r=String.fromCharCode(e.which),/^\d+$/.test(r))return n=t(e.currentTarget),a=n.val(),/^\d\d$/.test(a)?n.val(a+" / "):void 0},c=function(e){var n,r,a;if("/"===(a=String.fromCharCode(e.which))||" "===a)return n=t(e.currentTarget),r=n.val(),/^\d$/.test(r)&&"0"!==r?n.val("0"+r+" / "):void 0},o=function(e){var n,r;if(n=t(e.currentTarget),r=n.val(),8===e.which&&(null==n.prop("selectionStart")||n.prop("selectionStart")===r.length))return/\d\s\/\s$/.test(r)?(e.preventDefault(),setTimeout(function(){return n.val(r.replace(/\d\s\/\s$/,""))})):void 0},f=function(e){var n;return n=t(e.currentTarget),setTimeout(function(){var t;return t=n.val(),t=m(t),t=t.replace(/\D/g,"").slice(0,4),$(t,n)})},w=function(t){var e;return!(!t.metaKey&&!t.ctrlKey)||32!==t.which&&(0===t.which||(t.which<33||(e=String.fromCharCode(t.which),!!/[\d\s]/.test(e))))},C=function(n){var r,a,i,o;if(r=t(n.currentTarget),i=String.fromCharCode(n.which),/^\d+$/.test(i)&&!h(r))return 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this.on("keypress",w),this.on("keypress",T),this.on("keypress",u),this.on("keypress",c),this.on("keypress",s),this.on("keydown",o),this.on("change",v),this.on("input",v),this},t.payment.fn.formatCardNumber=function(){return this.on("keypress",w),this.on("keypress",C),this.on("keypress",l),this.on("keydown",i),this.on("keyup",D),this.on("paste",g),this.on("change",g),this.on("input",g),this.on("input",D),this},t.payment.fn.restrictNumeric=function(){return this.on("keypress",w),this.on("paste",d),this.on("change",d),this.on("input",d),this},t.payment.fn.cardExpiryVal=function(){return t.payment.cardExpiryVal(t(this).val())},t.payment.cardExpiryVal=function(t){var e,n,r;return r=t.split(/[\s\/]+/,2),e=r[0],2===(null!=(n=r[1])?n.length:void 0)&&/^\d+$/.test(n)&&(n=(new Date).getFullYear().toString().slice(0,2)+n),e=parseInt(e,10),n=parseInt(n,10),{month:e,year:n}},t.payment.validateCardNumber=function(t){var n,r;return t=(t+"").replace(/\s+|-/g,""),!!/^\d+$/.test(t)&&(!!(n=e(t))&&(r=t.length,k.call(n.length,r)>=0&&(!1===n.luhn||p(t))))},t.payment.validateCardExpiry=function(e,n){var r,a,i;return"object"==typeof e&&"month"in e&&(e=(i=e).month,n=i.year),!(!e||!n)&&(e=t.trim(e),n=t.trim(n),!!/^\d+$/.test(e)&&(!!/^\d+$/.test(n)&&(1<=e&&e<=12&&(2===n.length&&(n=n<70?"20"+n:"19"+n),4===n.length&&(a=new Date(n,e),r=new Date,a.setMonth(a.getMonth()-1),a.setMonth(a.getMonth()+1,1),a>r)))))},t.payment.validateCardCVC=function(e,r){var a,i;return e=t.trim(e),!!/^\d+$/.test(e)&&(null!=(a=n(r))?(i=e.length,k.call(a.cvcLength,i)>=0):e.length>=3&&e.length<=4)},t.payment.cardType=function(t){var n;return t?(null!=(n=e(t))?n.type:void 0)||null:null},t.payment.formatCardNumber=function(n){var r,a,i,o;return n=n.replace(/\D/g,""),(r=e(n))?(i=r.length[r.length.length-1],n=n.slice(0,i),r.format.global?null!=(o=n.match(r.format))?o.join(" "):void 0:null!=(a=r.format.exec(n))?(a.shift(),(a=t.grep(a,function(t){return t})).join(" ")):void 0):n},t.payment.formatExpiry=function(t){var e,n,r,a;return(n=t.match(/^\D*(\d{1,2})(\D+)?(\d{1,4})?/))?(e=n[1]||"",r=n[2]||"",(a=n[3]||"").length>0?r=" / ":" /"===r?(e=e.substring(0,1),r=""):2===e.length||r.length>0?r=" / ":1===e.length&&"0"!==e&&"1"!==e&&(e="0"+e,r=" / "),e+r+a):""}}).call(this)});