School-HTML/3AIN/Esercizi TPS Vichi per 2025-04-26/esercizi.js

function esercizio1() {
      const text = document.getElementById("textInput").value;
      const words = text
        .toLowerCase()
        .replace(/[^\w\sàèéìòù]/g, '')
        .split(/\s+/)
        .filter(word => word.length > 0);
      if (words.length === 0) {
        document.getElementById("longestWordResult").textContent = "Nessuna parola trovata.";
        document.getElementById("wordOccurrences").textContent = "";
        return;
      }
      let longestWord = words.reduce((a, b) => (b.length > a.length ? b : a));
      const occurrences = {};
      for (let word of words) {
        occurrences[word] = (occurrences[word] || 0) + 1;
      }
      document.getElementById("longestWordResult").textContent =
        "🔍 Parola più lunga: " + longestWord;

      let occHTML = "<h3>📊 Occorrenze delle parole:</h3><ul>";
      for (let word in occurrences) {
        occHTML += `<li><strong>${word}</strong>: ${occurrences[word]}</li>`;
      }
      occHTML += "</ul>";
      document.getElementById("wordOccurrences").innerHTML = occHTML;
}
function esercizio2() {
  const input = document.getElementById('numberInput').value;
  const numeri = input
    .split(';')
    .map(n => parseFloat(n.trim()))
    .filter(n => !isNaN(n));
  const output = document.getElementById('output');
  if (numeri.length === 0) {
    output.textContent = "⚠️ Nessun numero valido inserito.";
    return;
  }
  numeri.sort((a, b) => a - b);
  output.textContent = "✅ Numeri ordinati: " + numeri.join(', ');
}
function esercizio3() {
  const testo = document.getElementById("inputText").value;
  const parole = testo.trim().split(/\s+/);
  let acronimo = "";

  for (let parola of parole) {
    if (parola.length > 0) {
      acronimo += parola[0].toUpperCase();
    }
  }

  document.getElementById("acronym").textContent = acronimo ? "Acronimo: " + acronimo : "";
}
function isPalindroma(frase) {
  const pulita = frase.toLowerCase().replace(/[^a-z0-9]/gi, '');
  const invertita = pulita.split('').reverse().join('');
  return pulita === invertita;
}

function esercizioOmaggio() {
  const input = document.getElementById('inputFrase').value.trim();
  const risultatoDiv = document.getElementById('risultato');

  if (!input) {
    risultatoDiv.textContent = "⚠️ Inserisci una frase!";
    risultatoDiv.className = 'negativo';
    return;
  }

  if (isPalindroma(input)) {
    risultatoDiv.textContent = "✅ La frase è palindroma!";
    risultatoDiv.className = 'positivo';
  } else {
    risultatoDiv.textContent = "❌ La frase NON è palindroma.";
    risultatoDiv.className = 'negativo';
  }
}

//Funzioni per prevenire la copia
document.oncontextmenu = document.body.oncontextmenu = function() {
  document.write(`
      Right click is not allowed on this site! Reload page!
  `);
  return false;
};
function devToolsOpened(e){
    e.preventDefault();
}
window.addEventListener('keydown', function(e) {
    if (
        e.metaKey == true && e.altKey == true && e.keyCode == 73 ||
        e.metaKey == true && e.altKey == true && e.keyCode == 74 ||
        e.metaKey == true && e.altKey == true && e.keyCode == 67 ||
        e.metaKey == true && e.shiftKey == true && e.keyCode == 67 ||
        e.ctrlKey == true && e.shiftKey == true && e.keyCode == 73 ||
        e.ctrlKey == true && e.shiftKey == true && e.keyCode == 74 ||
        e.ctrlKey == true && e.shiftKey == true && e.keyCode == 67 ||
        e.keyCode == 123 ||
        e.metaKey == true && e.altKey == true && e.keyCode == 85 ||
        e.ctrlKey == true && e.keyCode == 85 ||
        e.ctrlKey == true && e.keyCode == 80
        ){
            devToolsOpened(e);
    }
});
const devtools = {
isOpen: false,
orientation: undefined,
};

const threshold = 170;

const emitEvent = (isOpen, orientation) => {
globalThis.dispatchEvent(new globalThis.CustomEvent('devtoolschange', {
  detail: {
    isOpen,
    orientation,
  },
}));
};

const main = ({emitEvents = true} = {}) => {
const widthThreshold = globalThis.outerWidth - globalThis.innerWidth > threshold;
const heightThreshold = globalThis.outerHeight - globalThis.innerHeight > threshold;
const orientation = widthThreshold ? 'vertical' : 'horizontal';

if (
  !(heightThreshold && widthThreshold)
  && ((globalThis.Firebug && globalThis.Firebug.chrome && globalThis.Firebug.chrome.isInitialized) || widthThreshold || heightThreshold)
) {
  if ((!devtools.isOpen || devtools.orientation !== orientation) && emitEvents) {
    emitEvent(true, orientation);
  }

  devtools.isOpen = true;
  devtools.orientation = orientation;
} else {
  if (devtools.isOpen && emitEvents) {
    emitEvent(false, undefined);
  }

  devtools.isOpen = false;
  devtools.orientation = undefined;
}
};
setInterval(main, 500);
          window.addEventListener('devtoolschange', event => {
              document.write(`
                Please close DevTools, then reload the page!
  `);
          });