<!DOCTYPE html>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="suma"> tu bedzie suma
</div>
<script type="text/javascript">
document.addEventListener('DOMContentLoaded',function(){
let pierwszy = document.getElementById("1");
let drugi = document.getElementById("2");
let suma = document.getElementById("suma");
suma.innerHTML = (pierwszy.value) + (drugi.value);
sumowanie();
});
function sumowanie(){
let pierwszy = document.getElementById("1");
let drugi = document.getElementById("2");
let suma = document.getElementById("suma");
pierwszy.addEventListener('blur',function(){
if (pierwszy.value !='') {
console.log('dziala');
}
else{ alert('wpisz liczbe');}
});
drugi.addEventListener('blur',function(){
if (drugi.value !='') {
let warpierwszy = parseInt(pierwszy.value);
let wardrugi = parseInt(drugi.value);
suma.innerHTML = (warpierwszy+wardrugi);
console.log('dziala');
}
else{
alert('wpisz liczbe');
}
});
}
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}