utils.js
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utils.js
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	/**
	* Copyright (C) 2019 The Software Heritage developers
	* See the AUTHORS file at the top-level directory of this distribution
	* License: GNU Affero General Public License version 3, or any later version
	* See top-level LICENSE file for more information
	*/

	"use strict";

	function getNbPersons(prefix) {
	var nbField = document.querySelector(`#${prefix}_nb`);
	return parseInt(nbField.value, 10);
	}

	function setNbPersons(prefix, nb) {
	var nbField = document.querySelector(`#${prefix}_nb`);
	nbField.value = nb;
	}

	function setError(msg) {
	document.querySelector("#errorMessage").innerHTML = msg;
	}

	function trimSpaces(s) {
	return s.replace(/^\s+\|\s+$/g, '');
	}