JSFiddle - React, Tailwind, and code Playground
JavaScript
document.getElementById("price_cpu").style.display = "none";
document.getElementById("preview").style.display = "none";
function getpricecpu(){
var sum_main = document.getElementById("sum_main");
var maker = document.getElementById("chosenmak");
var preview = document.getElementById("preview");
if (maker.selectedIndex == 0 ) {
document.getElementById("price_cpu").style.display = "none";
document.getElementById('sum_main').innerHTML = "0.00";
document.getElementById("preview").style.display = "none", document.getElementById("preview").src='';
}
else {
var price = maker.options[maker.selectedIndex].getAttribute("data-price")
document.getElementById('price_cpu').value = price;
document.getElementById("price_cpu").style.display = "inline-block";
var image = maker.options[maker.selectedIndex].getAttribute("data-image") document.getElementById('preview').src = image;
document.getElementById("preview").style.display = "inline-block";
document.getElementById('sum_main').innerHTML = price;
}
}