Mini-Math-Toolkit/index.html at main · ashu20122005/Mini-Math-Toolkit · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Mini Math Toolkit - Grid Layout</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      background: #4d33bd;
      margin: 0;
      padding: 20px;
    }

    h1 {
      text-align: center;
      margin-bottom: 30px;
      color: antiquewhite;
    }

    .grid-container {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      grid-template-rows: auto auto auto;
      gap: 20px;
      max-width: 1100px;
      margin: 0 auto;
    }

    .tool {
      background: #fff;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    }

    .tool h2 {
      margin-top: 0;
      color: #007bff;
    }

    input, button {
      padding: 10px;
      font-size: 16px;
      margin: 5px 0;
      width: 100%;
      box-sizing: border-box;
    }

    button {
      background-color: #007bff;
      color: white;
      border: none;
      border-radius: 6px;
      cursor: pointer;
    }

    button:hover {
      background-color: #0056b3;
    }

    .output {
      margin-top: 10px;
      font-weight: bold;
    }

    /* Special center placement for tool 5 */
    .center-tool {
      grid-column: 1 / span 2;
      text-align: center;
    }
  </style>
</head>
<body>

<h1>Mini Math Toolkit 🔧</h1>

<div class="grid-container">
  <!-- Top Row -->
  <div class="tool">
    <h2>1. Factorial Calculator</h2>
    <input type="number" id="factNum" placeholder="Enter a number">
    <button onclick="calcFactorial()">Calculate Factorial</button>
    <div class="output" id="factResult"></div>
  </div>

  <div class="tool">
    <h2>2. Prime Number Checker</h2>
    <input type="number" id="primeNum" placeholder="Enter a number">
    <button onclick="checkPrime()">Check Prime</button>
    <div class="output" id="primeResult"></div>
  </div>

  <!-- Center Row (Table Generator) -->
  <div class="tool center-tool">
    <h2>5. Multiplication Table Generator</h2>
    <input type="number" id="tableNum" placeholder="Enter a number">
    <button onclick="generateTable()">Generate Table</button>
    <div class="output" id="tableResult"></div>
  </div>

  <!-- Bottom Row -->
  <div class="tool">
    <h2>3. LCM Calculator</h2>
    <input type="number" id="lcmA" placeholder="Enter first number">
    <input type="number" id="lcmB" placeholder="Enter second number">
    <button onclick="calcLCM()">Find LCM</button>
    <div class="output" id="lcmResult"></div>
  </div>

  <div class="tool">
    <h2>4. HCF (GCD) Calculator</h2>
    <input type="number" id="hcfA" placeholder="Enter first number">
    <input type="number" id="hcfB" placeholder="Enter second number">
    <button onclick="calcHCF()">Find HCF</button>
    <div class="output" id="hcfResult"></div>
  </div>
</div>

<script>
  function calcFactorial() {
    let n = parseInt(document.getElementById("factNum").value);
    let result = 1;
    if (n < 0 || isNaN(n)) {
      document.getElementById("factResult").innerText = "Please enter a non-negative number.";
      return;
    }
    for (let i = 2; i <= n; i++) {
      result *= i;
    }
    document.getElementById("factResult").innerText = `Factorial of ${n} is ${result}`;
  }

  function checkPrime() {
    let n = parseInt(document.getElementById("primeNum").value);
    if (n <= 1 || isNaN(n)) {
      document.getElementById("primeResult").innerText = "Not a prime number.";
      return;
    }
    for (let i = 2; i <= Math.sqrt(n); i++) {
      if (n % i === 0) {
        document.getElementById("primeResult").innerText = `${n} is not a prime number.`;
        return;
      }
    }
    document.getElementById("primeResult").innerText = `${n} is a prime number.`;
  }

  function calcLCM() {
    let a = parseInt(document.getElementById("lcmA").value);
    let b = parseInt(document.getElementById("lcmB").value);
    if (isNaN(a) || isNaN(b) || a <= 0 || b <= 0) {
      document.getElementById("lcmResult").innerText = "Enter two positive numbers.";
      return;
    }
    let max = Math.max(a, b);
    let lcm = max;
    while (true) {
      if (lcm % a === 0 && lcm % b === 0) break;
      lcm++;
    }
    document.getElementById("lcmResult").innerText = `LCM of ${a} and ${b} is ${lcm}`;
  }

  function calcHCF() {
    let a = parseInt(document.getElementById("hcfA").value);
    let b = parseInt(document.getElementById("hcfB").value);
    if (isNaN(a) || isNaN(b) || a <= 0 || b <= 0) {
      document.getElementById("hcfResult").innerText = "Enter two positive numbers.";
      return;
    }
    while (b !== 0) {
      let temp = b;
      b = a % b;
      a = temp;
    }
    document.getElementById("hcfResult").innerText = `HCF is ${a}`;
  }

  function generateTable() {
    let num = parseInt(document.getElementById("tableNum").value);
    let output = "";
    if (isNaN(num)) {
      document.getElementById("tableResult").innerText = "Enter a valid number.";
      return;
    }
    for (let i = 1; i <= 10; i++) {
      output += `${num} × ${i} = ${num * i}<br>`;
    }
    document.getElementById("tableResult").innerHTML = output;
  }
</script>

</body>
</html>