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Checks the validity of a given Isracard credit card number
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function isracardCheck(num) { | |
if(num.length < 8 || num.length > 9) return false; | |
var diff = "987654321", | |
sum = 0, | |
a = 0, | |
b = 0, | |
c = 0; | |
if(num.length < 9) num = "0" + num; | |
for(var i=1;i<9;i++){ | |
sum += parseInt(diff.substr(i,1))*parseInt(num.substr(i,1)); | |
} | |
if(sum % 11 == 0) return true; | |
else return false; | |
} |
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