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Insecure Resource

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CSS

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JavaScript

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HTML 

              
                
<div id="calculator">
  <div id="display"> </div>
  <div class="keypad">
    <div class="numpad">
      <button class="btn num" id="one" onclick="updateCurrentNum(1)"> 1 </button>
      <button class="btn num" id="two" onclick="updateCurrentNum(2)"> 2 </button>
      <button class="btn num" id="three" onclick="updateCurrentNum(3)"> 3 </button>
      <button class="btn num" id="four" onclick="updateCurrentNum(4)"> 4 </button>
      <button class="btn num" id="five" onclick="updateCurrentNum(5)"> 5 </button>
      <button class="btn num" id="six" onclick="updateCurrentNum(6)"> 6 </button>
      <button class="btn num" id="seven" onclick="updateCurrentNum(7)"> 7 </button>
      <button class="btn num" id="eight" onclick="updateCurrentNum(8)"> 8 </button>
      <button class="btn num" id="nine" onclick="updateCurrentNum(9)"> 9 </button>
      <button class="btn cmd" id="decimal" onclick="insertDecimal()"> . </button>
      <button class="btn num" id="zero" onclick="updateCurrentNum(0)"> 0 </button>
      <button class="btn cmd" id="equals" onclick="showAnswer()"> = </button>
    </div>
    <div class="ops">
      <button class="btn cmd" id="add" onclick="changeOp('+')"> + </button>
      <button class="btn cmd" id="subtract" onclick="changeOp('-')"> - </button>
      <button class="btn cmd" id="multiply" onclick="changeOp('x')"> x </button>
      <button class="btn cmd" id="divide" onclick="changeOp('/')"> / </button>
      <button class="btn" id="clear" onclick="reset()"> Clear</button>
    </div>
  </div>
</div>
!

CSS 

              
                body {
  font-family: sans-serif;
}

#calculator {
  width: 300px;
  margin-left: auto;
  margin-right: auto;
  background: #880099;
  border-radius: 10px;
  border: 4px solid #009977;
  padding-bottom: 50px;
  box-shadow: 3px 3px #444;
}

#display {
  background: #fff;
  font-size: 36px;
  text-align: right;
  margin-top: 15px;
  border-radius: 5px;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
  border: 2px solid #009977;
}
.keypad {
  display: flex;
  width: 70%;
  margin-left: auto;
  margin-right: auto;
  margin-top: 5px;
}

.btn {
  font-size: 20px;
  margin: 2px;
  text-align: center;
}

.numpad .btn {
  background: #009977;
  color: #fff;
  text-shadow: 1px 1px #444;
  width: 20%;
}

.numpad .cmd {
  background: #fff;
  color: #000;
  text-shadow: 0px 0px;
}

.ops .cmd {
  width: 40%;
}

#sqrt, #clear {
  width: 90%;
}
!

JS 

              
                var current = {};
window.onload = function() {
  reset();
};

function reset() {
  current = {
    total: 0,
    operation: "",
    input: 0,
    digits: 0,
    decPlaces: 0, // decimal place of *next* number to be entered
    doubleOp: false
  };
  $("#display").html(current.input);
}

function updateCurrentNum(content) {
  if (current.decPlaces) {
    updateDecimal(content);
  } else if (current.digits == 0) {
    current.digits = 1;
    current.input = content;
  } else {
    nextDigit(content);
  }
  current.doubleOp = false;
  if (current.decPlaces !== 0) {
    var asDec = makeFixed(current.input, current.decPlaces - 1);
    $("#display").html(asDec);
    return;
  }
  $("#display").html(current.input);
}

function makeFixed(number, places) {
  return (Math.round(number * 10 ** places) / 10 ** places).toFixed(places);
}
function numDisplayed() {
  var display = $("#display").html();
  var numeric = /[0-9]/;
  return numeric.test(display);
}

function decDisplayed() {
  var display = $("#display").html();
  var dec = /\./;
  return dec.test(display);
}
function insertDecimal() {
  if (decDisplayed()) {
    console.log("double decimal");
  } else if (numDisplayed()) {
    current.decPlaces = 1;
    $("#display").append(".");
  } else {
    current.decPlaces = 1;
    $("#display").html("0.");
  }
}
function updateDecimal(content) {
  console.log(10 ** current.decPlaces);
  content /= 10 ** current.decPlaces;
  current.input += content;
  current.decPlaces += 1;
}

function nextDigit(digit) {
  current.digits += 1;
  current.input *= 10;
  current.input += digit;
}

function changeOp(op) {
  if (current.operation && !current.doubleOp) {
    operate();
  } else if (current.doubleOp) {
    console.log("Double Op");
  } else {
    current.total = current.input;
  }
  current.operation = op;
  current.doubleOp = true;
  current.input = 0;
  current.digits = 0;
  current.decPlaces = 0;
  $("#display").html(op);
}

function operate() {
  if (current.operation == "+") {
    current.total += current.input;
  } else if (current.operation == "-") {
    current.total -= current.input;
  } else if (current.operation == "x") {
    current.total *= current.input;
  } else if (current.operation == "/") {
    current.total /= current.input;
  }
  console.log("=" + current.total);
}

function showAnswer() {
  operate();
  console.log(current.total % 1);
  if (!current.operation) {
    current.total = current.input;
  }
  if (current.decPlaces !== 0) {
    current.total = makeFixed(current.total, current.decPlaces - 1);
  }

  current.operation = "";
  current.input = current.total;
  current.doubleOp = false;
  $("#display").html(current.total);
}
!
999px

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