iOSCalculator/index.html at main · stevenrugg/iOSCalculator · GitHub

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<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="/styles.css">
  <title>Calculator</title>
  <style>
.calculator {
    margin: 50px auto;
    padding: 18px;
    width: 300px;
    height: 500px;
    background-color: #000000;
    border-radius: 20px;
    color: #FFFFFF;
    font-family: Arial;
    box-shadow: 4px 4px 4px #3D3E42

  }

  .screen {
    text-align: right;
    user-select: none;
    line-height: 10px;
    font-size: 60px;

  }

  .buttons {
    display: grid;
    grid-template-columns: repeat(4, 70px);
    grid-template-rows: repeat(4, 70px);
    grid-gap: 7px;
    justify-items: center;
  }
  .btn {
    width: 60px;
    height: 60px;
    background-color:#3D3E42;
    border-radius: 50%;
    text-align: center;
    line-height: 60px;
    user-select: none;
    font-size: 1.5rem;
  }

  .btn:hover {
    filter: brightness(120%)
  }

  .btn:active {
    filter: brightness(50%)
  }

  .bg-orange {
    background-color: #F37D0D
  }

  .bg-grey {
    background-color: #B4B0AC
  }

  .zero {
    grid-column: 1/3;
    width:100%;
    border-radius: 34px;
  }
.header {
    display: inline-block;
    align-items: center;
    justify-self: first baseline;
    align-items: center;
}
  </style>
</head>

<body>

  <div id="decription" class="heading"></div>
    <h1>iOS Calculator</h1>
    <p>Made with only CSS, HTML5 and vanilla Javascript</p>
    <p>© Steven Rugg 2024 http://github.com/stevenrugg/ioscalculator</p>
    <a href="https://github.com/stevenrugg/ioscalculator">Back to Github</a>
  </div>
  <div class="calculator">
    <div class="screen">
      <p id="calcDisplay">0</p>
    </div>
    <div class="buttons">

      <div id="acBtn"class="btn ac bg-grey">ac</div>
      <div id="plusMinusBtn" class="btn plus/minus bg-grey">+/-</div>
      <div id="percentBtn"class="btn percent bg-grey">%</div>
      <div id="divisionBtn" class="btn division bg-orange">/</div>

      <div id="sevenBtn" class="btn seven">7</div>
      <div id="eightBtn" class="btn eight">8</div>
      <div id="nineBtn" class="btn nine">9</div>
      <div id="multiplyBtn" class="btn multiply bg-orange">*</div>

      <div id="fourBtn" class="btn four">4</div>
      <div id="fiveBtn" class="btn five">5</div>
      <div id="sixBtn" class="btn six">6</div>
      <div id="minusBtn" class="btn minus bg-orange">-</div>

      <div id="oneBtn" class="btn one">1</div>
      <div id="twoBtn" class="btn two">2</div>
      <div id="threeBtn" class="btn three">3</div>
      <div id="plusBtn" class="btn plus bg-orange">+</div>

      <div id="zeroBtn" class="btn zero">0</div>
      <div id="dotBtn" class="btn quote">.</div>
      <div id="equalsBtn" class="btn equals bg-orange">=</div>

    </div>
  </div>

  <script type=application/javascript>
// Get the display element
const display = document.getElementById('calcDisplay');

// Initialize the display value
let currentValue = '0';

// Add event listeners to each button
document.querySelectorAll('.btn').forEach((button) => {
  button.addEventListener('click', (event) => {
    const buttonText = event.target.textContent;
    handleButtonPress(buttonText);
  });
});

// Function to handle button presses
function handleButtonPress(buttonText) {
  switch (buttonText) {
    case 'ac':
      // Clear the display
      currentValue = '0';
      break;
    case '+/-':
      // Toggle the sign of the current value
      currentValue = currentValue * -1;
      break;
    case '%':
      // Calculate the percentage of the current value
      currentValue = currentValue / 100;
      break;
    case '=':
      // Evaluate the expression and display the result
      try {
        currentValue = eval(currentValue);
      } catch (error) {
        currentValue = 'Error';
      }
      break;
    case '+':
    case '-':
    case '*':
    case '/':
      // Append the operator to the current value
      currentValue += buttonText;
      break;
    default:
      // Append the digit to the current value
      if (currentValue === '0') {
        currentValue = buttonText;
      } else {
        currentValue += buttonText;
      }
  }
  updateDisplay();
}

// Function to update the display
function updateDisplay() {
  display.textContent = currentValue;
}
</script>
</body>

</html>