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No:51912

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Calculator with pi
Developer User21460｜Date and time 24/3/16 19:10:33
Build time 5.243 sec｜Game capacity 1.51KB｜

Script

Calculator with Pi

Press the buttons below to perform calculations with Pi.

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<!DOCTYPE html>
<html>
<head>
  <title>Calculator</title>
</head>
<body>
  <h1>Calculator with Pi</h1>
  <p>Press the buttons below to perform calculations with Pi.</p>
  
  <input type="text" id="result" disabled>
  
  <br>
  
  <button onclick="addNumber(1)">1</button>
  <button onclick="addNumber(2)">2</button>
  <button onclick="addNumber(3)">3</button>
  <button onclick="addNumber(4)">4</button>
  <button onclick="addNumber(-1)">π</button>
  
  <button onclick="addOperator('+')">+</button>
  <button onclick="addOperator('-')">-</button>
  <button onclick="addOperator('*')">*</button>
  <button onclick="addOperator('/')">/</button>
  
  <button onclick="calculateResult()">=</button>
  
  <script>
    let equation = "";
    
    function addNumber(number) {
      equation += number;
      document.getElementById('result').value = equation;
    }
    
    function addOperator(operator) {
      equation += operator;
      document.getElementById('result').value = equation;
    }
    
    function calculatePi() {
      equation += Math.PI;
      document.getElementById('result').value = equation;
    }
    
    function calculateResult() {
      try {
        let result = eval(equation);
        document.getElementById('result').value = result;
        equation = result.toString();
      } catch(error) {
        document.getElementById('result').value = "Error";
        equation = "";
      }
    }
  </script>
  
</body>
</html>