15 lines
683 B
JavaScript
15 lines
683 B
JavaScript
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import assertString from './util/assertString';
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// http://www.brainjar.com/js/validation/
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// https://www.aba.com/news-research/research-analysis/routing-number-policy-procedures
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// series reserved for future use are excluded
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var isRoutingReg = /^(?!(1[3-9])|(20)|(3[3-9])|(4[0-9])|(5[0-9])|(60)|(7[3-9])|(8[1-9])|(9[0-2])|(9[3-9]))[0-9]{9}$/;
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export default function isAbaRouting(str) {
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assertString(str);
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if (!isRoutingReg.test(str)) return false;
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var checkSumVal = 0;
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for (var i = 0; i < str.length; i++) {
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if (i % 3 === 0) checkSumVal += str[i] * 3;else if (i % 3 === 1) checkSumVal += str[i] * 7;else checkSumVal += str[i] * 1;
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}
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return checkSumVal % 10 === 0;
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}
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