Square-Root-Calculator/index.html at main · RaazLife/Square-Root-Calculator · GitHub

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<!DOCTYPE html>
<html>
<head>
  <title>Square Root Calculator</title>
  <style>
    body {
      font-family: Arial, sans-serif;
    }

    .container {
      width: 400px;
      margin: 0 auto;
      padding-top: 50px;
    }

    h1 {
      text-align: center;
    }

    .calculator {
      background-color: #f5f5f5;
      padding: 20px;
      border-radius: 5px;
    }

    .input-group {
      margin-bottom: 10px;
    }

    label {
      font-weight: bold;
      margin-right: 10px;
    }

    input[type="number"] {
      padding: 5px;
      width: 150px;
    }

    button {
      padding: 5px 10px;
      background-color: #4caf50;
      color: #fff;
      border: none;
      cursor: pointer;
    }

    .result {
      margin-top: 20px;
      text-align: center;
      font-size: 18px;
      font-weight: bold;
    }

    .root-symbol {
      font-size: 20px;
    }
  </style>
</head>
<body>
  <div class="container">
    <h1>Square Root Calculator</h1>
    <div class="calculator">
      <div class="input-group">
        <label for="number">Number:</label>
        <input type="number" id="number" placeholder="Enter a number" required>
      </div>
      <div class="input-group">
        <button id="calculateBtn">Calculate</button>
      </div>
      <div class="result">
        <span id="resultExplanation"></span>
        <br>
        <span id="resultValue"></span>
      </div>
    </div>
  </div>
  <script>
    document.getElementById("calculateBtn").addEventListener("click", function() {
      const numberInput = document.getElementById("number");
      const resultExplanation = document.getElementById("resultExplanation");
      const resultValue = document.getElementById("resultValue");

      const number = parseFloat(numberInput.value);

      if (isNaN(number)) {
        resultExplanation.textContent = "";
        resultValue.textContent = "Please enter a valid number.";
        return;
      }

      if (number < 0) {
        resultExplanation.textContent = "";
        resultValue.textContent = "Square root of a negative number is not defined.";
        return;
      }

      const squareRoot = Math.sqrt(number);
      resultExplanation.textContent = `The square root of ${number} is calculated as follows:`;
      resultValue.innerHTML = `Step 1: Start with an initial guess, let's say ${squareRoot.toFixed(2)}.<br>
                               Step 2: Improve the guess by using the formula:<br>
                               Guess = (Guess + (${number} / Guess)) / 2.<br>
                               Step 3: Repeat step 2 until the guess is close enough to the actual square root.<br><br>
                               The square root of ${number} is approximately <span class="root-symbol">&radic;</span>${squareRoot.toFixed(2)}`;
    });
  </script>
</body>
</html>