matsmart.js

var els = document.querySelectorAll('.views-row');
var newEls = [];
for (const el of els){
	let productName = el.querySelector('.prd-name').innerHTML;
	let normalPrice = el.querySelector('span[data-normal-price]').getAttribute('data-normal-price');
	let currentPrice = el.querySelector('span[data-cur-price]').getAttribute('data-cur-price');
	newEls.push({
		el: el,
		item: productName,
		normalPrice: normalPrice,
		currentPrice: currentPrice,
		diff: currentPrice / normalPrice
    });
    if (currentPrice / normalPrice > 0.6){
    	el.parentElement.removeChild(el);
    }
}
function compare(a,b) {
	if (a.diff < b.diff)
        return -1;
	if (a.diff > b.diff)
		return 1;
      return 0;
}
newEls.sort(compare);
for (const newEl of newEls){
	// newEl.el.querySelector('a').style.backgroundColor = 'rgba(255,0,0,'+newEl.diff+')';
    console.log('diff: ',newEl.diff,'	item:',newEl.item);
}