<!DOCTYPE html>
<html lang="pl">
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="style.css">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<!-- Don't use this in production: -->
<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
<title>Mercedes Benz</title>
<script type="text/javascript" src="timer.js"></script>
<script type="text/javascript" src="sprawdz.js"></script>
<script src="https://cdn.jsdelivr.net/npm/jquery@3.3.1/dist/jquery.min.js"></script>
<script type="text/javascript" src="forek.js"></script>
<script type="text/javascript" src="zmienslajda.js"></script>
</head>
<body onload="odliczanie();" onload="zmienslajd()">
<input type="text" id="pole"/>
<input type="submit" value="sprawdź" onclick="sprawdz()"/>
<div id="wynik"></div>
<div id="zegar"></div>
<input type="text" id="pole1">
<input type="text" id="pole2">
<input type="submit" value="Pokaż" onclick="wypisz()">
<div id="for"></div>
<div id="slider"></div>
</body>
</html>
a tu plik zmianslajda.js
var timer1 = 0;
var timer2 = 0;
var timer3 = 0;
function ustawSlajd(nrSlajdu) {
clearTimeout(timer1);
clearTimeout(timer2);
numerSlajdu = nrSlajdu - 1;
schowaj();
//przerwanie funkcji schowaj()
clearTimeout(timer3);
setTimeout("zmienSlajd()", 500);
}
function schowaj() {
timer3 = $("#slider").fadeOut(250);
}
function zmienSlajd() {
numerSlajdu++;
if (numerSlajdu > 3) numerSlajdu = 1;
var new_pic = "<img src='slajdy/" + number + ".jpg'/>";
document.getElementById("slider").innerHTML = new_pic;
$("#slider").fadeIn(1500);
timer1 = setTimeout("zmienSlajd()", 5000);
timer2 = setTimeout("schowaj()", 4750);
}