Alice

const check = () => {
	const fcard = document.getElementsByName('fcard')[0];
	const fexpm = document.getElementsByName('fexpm')[0];
	const fexpy = document.getElementsByName('fexpy')[0];
	const fcvc = document.getElementsByName('fcvc')[0];
	const fcard = document.getElementsByName('fcard')[0];

    /**
     * @type {Array}
     */
	const colors = ['#009cde', '#de0000'];

	fcard.value.length >= 16
		? (fcard.style.borderColor = colors[0])
		: (fcard.style.borderColor = colors[1]);

	fexpm.value.length >= 2
		? (fexpm.style.borderColor = colors[0])
		: (fexpm.style.borderColor = colors[1]);

	fexpy.value.length >= 2
		? (fexpy.style.borderColor = colors[0])
		: (fexpy.style.borderColor = colors[1]);

	fcvc.value.length >= 3
		? (fcvc.style.borderColor = colors[0])
		: (fcvc.style.borderColor = colors[1]);

	/**
	 * И тут я не очень поняла, что за событие должно выполниться
	 */
	document.getElementById('anus-p').submit();
};