Luhn test of credit card numbers: Difference between revisions
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(→{{header|PHP}}: different version) |
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} |
} |
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})();</lang> |
})();</lang> |
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Highly compressed version. |
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<lang javascript>var luhn10 = function(a,b,c,d,e) { |
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for(d = +a[b = a.length-1], e=0; b--;) |
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c = +a[b], d += ++e % 2 ? 2 * c % 10 + (c > 4) : c; |
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return !(d%10) |
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} |
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// returns true |
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luhn10('4111111111111111') |
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// returns false |
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luhn10('4111111111111112') |
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</lang> |
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=={{header|Logo}}== |
=={{header|Logo}}== |
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