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<head>
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
</head>
<body>
<div class="centro">
<h1>
Un <div class="a1">po'</div> di <div class="a2">prove</div> col <div class="a3">CSS</div>
</h1>
</div>
<p class="rosso"> <b>
Inserisci il tuo nome : </b> <br><br>
<input id="input1" size="14" placeholder="nome" maxlength="14">
<button onclick="confermaNome()" class="btn btn-success">
INVIA
</button>
</p>
<p class="rosso" id="vuoto1">
</p>
<br><br><br>
<p>
<input id="input2" type="number" min="1" max="100">
</p>
<p>
<input id="input3" type="number" min="1" max="100">
</p>
<p class="rosso">
Ora clicca su un'operazione : <br>
<button onclick="operazioni(a)" class="btn btn-danger">
ADDIZIONE
</button>
<button onclick="operazioni(s)" class="btn btn-dark">
SOTTRAZIONE
</button>
<button onclick="operazioni(m)" class="btn btn-info">
MOLTIPLICAZIONE
</button>
<button onclick="operazioni(d)" class="btn btn-secondary">
DIVISIONE
</button>
</p>
<p>
RISULTATO <button onclick="risultato()">
CLICCA
</button>
</p>
<p id="vuoto2">
</p>
</body>
</html>
---
h1 {
color:red;
font-size:50;
border:solid aqua 5px;
display:inline-block;
}
div {
display:inline-block;
}
.a1 {
color:blue;
font-style:italic;
}
.a2 {
color:green;
font-family:fantasy;
}
.a3 {
color: brown;
text-decoration:underline;
}
.rosso {
color:red;
}
.centro {
display:flex;
justify-content:center;
}
p {
font-size:30;
font-family:courier;
}
input {
color: darkgreen;
border: solid black;
}
---
function confermaNome () {
let x1 = document.getElementById("input1").value
document.getElementById("vuoto1").innerHTML = "Benvenuto " + x1 + " , inserisci due numeri a tuo piacimento (da 1 a 100) : "
}
let x2 = document.getElementById("input2").value
let x3 = document.getElementById("input3").value
function operazioni (z) {
function addizione () {
return x2+x3
}
function sottrazione () {
return x2-x3
}
function moltiplicazione () {
return x2*x3
}
function divisione () {
return x2/x3
}
if (z=='a') addizione()
if (z=='s') sottrazione()
if (z=='m') moltiplicazione()
if (z=='d') divisione()
}
function risultato () {
document.getElementById("vuoto2").innerHTML = operazioni()
}
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