lux-utils
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JS library to validate and format common Luxembourgish administrative data.
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<h1 class="page-title">validateLicensePlate/index.js</h1>
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<pre class="prettyprint source linenums"><code>/**
* @memberof LuxUtils
* @function validateLicensePlate
* @description Returns `true` if the given postal code is valid
* @param {(string|integer)} licensePlateToValidate postal code to validate. Can be a `string` or a `integer`
* @returns {boolean} `true` or `false`
*
* @example
* // validate a postal code
* let isValid = LuxUtils.validateLicensePlate(4402); //true;
* let isValid2 = LuxUtils.validateLicensePlate("L-4402"); //true;
* let isValid3 = LuxUtils.validateLicensePlate("0404"); //false;
*/
export default (licensePlateToValidate) => {
// format: custom plate - 1111 or 11111
if (Number.isInteger(licensePlateToValidate)) {
return (
licensePlateToValidate.toString().length === 4
|| licensePlateToValidate.toString().length === 5
);
}
// format: LL 22
// format: LL 1234
if (typeof licensePlateToValidate === 'string') {
const strippedLicensePlateToValidate = licensePlateToValidate.replace(/\s/g, '');
const twoFirstLetters = strippedLicensePlateToValidate.substr(0, 2);
if (isTwoLetters(twoFirstLetters)) {
const rest = strippedLicensePlateToValidate.substr(
2,
strippedLicensePlateToValidate.length - 2,
);
console.log('test', rest);
if (rest.length === 4 && /^\d+$/.test(rest)) {
return true;
}
} else {
// custom plate
return (
strippedLicensePlateToValidate.toString().length === 4
|| strippedLicensePlateToValidate.toString().length === 5
);
}
}
return false;
};
function isTwoLetters(str) {
const regex = /^[a-z]+$/i;
return str.length === 2 && regex.test(str);
}
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