3 examples of 'yup number validation' in JavaScript

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8function validateNumber(num) {
9 num = (num + '').replace(/\s+|-/g, '');
10
11 if (!/^\d+$/.test(num)) {
12 return false;
13 }
14
15 var card = cardFromNumber(num);
16
17 if (card) {
18 var cardNumbers = A(card.length);
19
20 return ( cardNumbers.includes(num.length)) && (card.luhn === false || luhnCheck(num));
21 }
22
23 return false;
24}
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45function verify(number) {
46 if (!_.isNumber(number)) {
47 throw new Error('Wrong log level specified!');
48 }
49 return number;
50}
149validateNumber: function validateNumber(name) {
150 var opts = arguments[1] === undefined ? {} : arguments[1];
151
152 if (util.type(this[name]) === "number") {
153 if (opts.nonnegative && this[name] < 0) {
154 this.addError(name, "must not be negative");
155 }
156
157 if (opts.maximum && this[name] > opts.maximum) {
158 this.addError(name, "may not be greater than " + opts.maximum);
159 }
160
161 if (opts.minimum && this[name] < opts.minimum) {
162 this.addError(name, "may not be less than " + opts.minimum);
163 }
164 } else if (!isBlank(this["" + name + "BeforeCoercion"])) {
165 this.addError(name, "is not a number");
166 }
167},

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