Wait for an element to exist on the page with jQuery

wait-el.js

// Convert shop the look pricing (EURO only) to cart currency
var existGetTheLook = setInterval(function () {

    if ($('.stl__presentmentPrice').length) {
        clearInterval(existGetTheLook);

        let price_needed = 'data-currency-' + cart_currency.toLocaleLowerCase();

        $('span[class="stl__presentmentPrice"]').each(function (index, item) {
            let price_by_currency = $(item).attr(price_needed);
            $(item).children('.price').html(price_by_currency + ' ' + cart_currency);
        });

    }
}, 100); // check every 100ms