Загрузка данных

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script>
function f() {
    document.getElementById('t2').value =
    document.getElementById('t1').value;
}
</script>
</head>
<body>

<form name="f1">
Ваше имя:<br>
<input type="text" id="t1" onchange="f()"><br><br>

Копия:<br>
<input type="text" id="t2">
</form>

</body>
</html>

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>

<form name="f1">
Ваше имя:<br>
<input type="text" id="t1"
onchange="document.getElementById('t2').value=document.getElementById('t1').value;"><br><br>

Копия:<br>
<input type="text" id="t2">
</form>

</body>
</html>

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script>
function check() {
    if (document.getElementById('a').value == "8")
        alert("Верно");
    else
        alert("Неверно");
}
</script>
</head>
<body>

Сколько бит в 1 байте?<br>
<input type="text" id="a"><br><br>
<input type="button" value="Проверить" onclick="check()">

</body>
</html>

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script>
function f(e) {
    if (e.keyCode == 100)
        document.getElementById('t1').value = "нажата d";
}
</script>
</head>
<body>

<input type="text" id="t1" onkeypress="f(event)">

</body>
</html>

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script>
function sayHello(x) {
    x.value = "hello";
}
</script>
</head>
<body>

<input type="text" onclick="sayHello(this)">

</body>
</html>

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script>
function f(x) {
    x.value = x.value.toUpperCase();
}
</script>
</head>
<body>

<input type="text" onchange="f(this)">

</body>
</html>