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liron's pr - calculator #10

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liron's pr - calculator #10

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33 changes: 17 additions & 16 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -6,37 +6,38 @@
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calculator</title>
<link rel="stylesheet" href="style.css">
<script type="text/javascript" src="script.js"></script>
</head>

<body>
<div class="calculator">
<div class="display">&nbsp;</div>
<div class="buttons">
<div class="row">
<button class="number" id="number-7">7</button>
<button class="number" id="number-8">8</button>
<button class="number" id="number-9">9</button>
<button class="number" id="number-7" onclick="pressButton(event)">7</button>
<button class="number" id="number-8" onclick="pressButton(event)">8</button>
<button class="number" id="number-9" onclick="pressButton(event)">9</button>
</div>
<div class="row">
<button class="number" id="number-4">4</button>
<button class="number" id="number-5">5</button>
<button class="number" id="number-6">6</button>
<button class="number" id="number-4" onclick="pressButton(event)">4</button>
<button class="number" id="number-5" onclick="pressButton(event)">5</button>
<button class="number" id="number-6" onclick="pressButton(event)">6</button>
</div>
<div class="row">
<button class="number" id="number-1">1</button>
<button class="number" id="number-2">2</button>
<button class="number" id="number-3">3</button>
<button class="number" id="number-1" onclick="pressButton(event)">1</button>
<button class="number" id="number-2" onclick="pressButton(event)">2</button>
<button class="number" id="number-3" onclick="pressButton(event)">3</button>
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</div>
<div class="row operations">
<!-- <button id="add">+</button>
<button id="subtract">-</button>
<button id="multiply">*</button>
<button id="divide">/</button> -->
<button id="add" onclick="pressButton(event)">+</button>
<button id="subtract" onclick="pressButton(event)">-</button>
<button id="multiply" onclick="pressButton(event)">*</button>
<button id="divide" onclick="pressButton(event)">/</button>
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</div>
<div class="row last-row">
<button id="clear">C</button>
<button class="number" id="number-0">0</button>
<button id="equal">=</button>
<button id="clear" onclick="clearScreen()">C</button>
<button class="number" id="number-0" onclick="pressButton(event)">0</button>
<button id="equal" onclick="calculate()">=</button>
</div>
</div>
</div>
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43 changes: 43 additions & 0 deletions script.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,43 @@

exrcise = "";

function pressButton(event) {
const screen = document.querySelector(".display");
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const num = event.target.innerHTML;
screen.textContent += num;
exrcise += num;
}

function calculate() {
const operators = ["+","-","/","*"];
const operator = operators.find(op => exrcise.indexOf(op) > -1);
const firstNum = parseInt(exrcise.substring(0,exrcise.indexOf(operator)));
const secondNum = parseInt(exrcise.substring(exrcise.indexOf(operator) + 1));
let result;

switch(operator){
case "+":
result = firstNum + secondNum;
break;
case "*":
result = firstNum * secondNum;
break;
case "-":
result = firstNum - secondNum;
break;
case "/":
result = firstNum / secondNum;
break;
}

const screen = document.querySelector(".display");
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screen.innerHTML = result;
exrcise = ""
}

function clearScreen() {
const screen = document.querySelector(".display");
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screen.innerHTML = "&nbsp;";
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exrcise = "";
}