random-characters.js

random-characters.js

// random-characters.js v1.1
function randomCharacters(length = [5, 15], characters) {
	let result = '',
		numbers = '0123456789',
		abc = 'abcdefghijklmnopqrstuvwxyz',
		abcSensitive = abc + abc.toUpperCase(),
		latin = abc + 'àáâãäçèéêëìíîïñòóôõöùúûü',
		latinSensitive = latin + latin.toUpperCase(),
		specials = '!@#$%¨&*()_-+=';
	characters = characters !== undefined ? characters : abcSensitive;
	if (typeof length !== 'number') {
		let min = Math.min(length[0], length[1]);
		let max = Math.max(length[0], length[1]);
		max = max + 1 - min;
		length = min + Math.floor(Math.random() * max);
	};
	switch (characters) {
		case 'numbers':
			characters = numbers;
			break;
		case 'letters':
			characters = abc;
			break;
		case 'lettersSensitive':
			characters = abcSensitive;
			break;
		case 'latin':
			characters = latin;
			break;
		case 'latinSensitive':
			characters = latinSensitive;
			break;
		case 'specials':
			characters = specials;
			break;
		case 'hex':
			characters = '0123456789abcdef';
			break;
		case 'all':
			characters = numbers + latinSensitive + specials;
			break;
	};
	for (let i = 0; i < length; i++) {
		result += characters[Math.floor(Math.random() * characters.length)];
	};
	return result;
};