JavaScript – Loop con for

Utilizzo del loop con il for. Questo codice in particolare può essere utile per leggere i tweets.

var tweetString = "";
            
var tweets = ["Hi everyone!", "I love cornflakes!", "Night night :)", "Sweet dreams!"];
            
for (var i = 0; i < tweets.length; i++) {           
     tweetString = tweetString + "<p>" + tweets[i] + "</p>";           
}
            
document.getElementById("tweetDiv").innerHTML = tweetString;

Qui invece si usa il while per giocare col computer e vedere in quante volte indovina il numero inserito.

<p>How many fingers are you holding up?</p>

<p>
	<select id="myNumber">

		<option>0</option>

		<option>1</option>

		<option>2</option>

		<option>3</option>

		<option>4</option>

		<option>5</option>

	</select>

	<button id="guess">Guess!</button>

</p>

<script type="text/javascript">

	document.getElementById("guess").onclick = function() {

		var myNumber = document.getElementById("myNumber").value;

		var gotIt = false;

		var numberOfGuesses = 1;

		while (gotIt == false) {

			var guess = Math.random();

			guess = guess * 6;

			guess = Math.floor(guess);

			if (guess == myNumber) {

				gotIt = true;

				alert ("Got it! It was a " + guess + ". It took me " + numberOfGuesses + " guesses.");

			} else {

				numberOfGuesses++;

			}

		}

	}