recipe-site/assets/script.js

window.onload = function () {
	Array.from(dgcn('method-checkbox')).forEach(checkbox => {
		// uncheck all the checkboxes every time the page is reloaded
		checkbox.checked = false;
		checkbox.onclick = function () {
			let num = parseInt(this.dataset.number);
			let prefix = this.parentElement.parentElement.dataset.cbPrefix;
			let max = this.parentElement.parentElement.children.length;

			if (this.checked) {
				// check everything before this - if you've done step 6, you've done steps 1-5
				for (i = num - 1; i > 0; i--) {
					cb = dgel(`${prefix}-${i}`);
					cb.checked = true;
					cb.parentElement.classList.add("checked");
				}
			} else {
				// uncheck everything after this - you can't have done step 8 if you haven't done step 4
				console.log(num + 1);
				for (i = num + 1; i <= max; i++) {
					cb = dgel(`${prefix}-${i}`);
					cb.checked = false;
					cb.parentElement.classList.remove("checked");
				}
			}

			this.parentElement.classList.toggle("checked");
		}
	})
}

function dgcn(cn) {
	return document.getElementsByClassName(cn);
}

function dgel(id) {
	return document.getElementById(id);
}

function subrecipe_toggle(id) {
	dgel(id).classList.toggle("open");
}