like_everything.js

// promisified setTimeout
const wait = async time => {
	return new Promise(res => {
		setTimeout(res, time);
	});
};

// return random number in given min max range
const getRandomNumber = (min, max) => {
	return Math.floor(Math.random() * (max - min + 1) + min);
};

const clickOnLikeButtons = async () => {
	while (true) {
		const button = document.querySelector(
			'div[aria-label="Like"] span > img'
		);
		button.scrollIntoViewIfNeeded();
		button.click();

		// wait 1 to 5 seconds randomly and click the like button
		await wait(getRandomNumber(1, 5) * 1000);
	}
};

// reload the page to stop
clickOnLikeButtons();