string.js

js grafikfabriken.nu collected 2026-10-06 17:53:58 UTC 480 bytes, 17 lines download raw bytes

1//IsNumber function
2    String.prototype.isNumber = function () {
3        return /^\d+$/.test(this);
4    };
5    //IsValidDate
6    String.prototype.isDate = function () {
7        return /^\d{4}-\d{2}-\d{2}$/.test(this);
8    };
9
10    String.prototype.isCivic = function () {
11        return /^\d{12}$/.test(this);
12    };
13
14    //isStringEmail
15    String.prototype.isEmail = function () {
16        return /^([a-zA-Z0-9_.+-])+\@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/.test(this);
17    };

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