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Finished #385

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Finished #385

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5010c87
Finished
Jun 10, 2024
6babfe1
fixed decimal bug
Jun 10, 2024
8ca32c4
Changed to parseFloat
Jun 10, 2024
cb554fa
Implemented the function to chain operations without having to click …
Jun 10, 2024
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100 changes: 100 additions & 0 deletions app.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,100 @@
const numbers = [...document.querySelectorAll(".number")];
const operators = [...document.querySelectorAll(".operation")];
const clearBtn = document.querySelector(".clear");
const equalsBtn = document.querySelector(".equals");

const OPERATOR_MAP = {
"+": "sum",
"-": "sub",
"×": "mult",
"÷": "divide",
};

const calculator = {
display: document.querySelector(".display"),
displayValue: "0",
enteredValues: [],
operator: "",

renderValue() {
this.display.innerText = this.displayValue;
},

clickNumber(n) {
if (this.displayValue === "0") {
this.displayValue = "";
}
this.displayValue += n.toString();
this.renderValue();
},

clear() {
this.displayValue = "0";
this.enteredValues = [];
this.operator = "";
this.renderValue();
},

calculate(a, b, op) {
let result;
switch (op) {
case "sum":
result = a + b;
break;
case "sub":
result = a - b;
break;
case "mult":
result = a * b;
break;
case "divide":
if (b === 0) {
result = "Error"; // Handle division by zero
} else {
result = a / b;
}
break;
default:
result = "Error";
}
this.displayValue = Number.parseFloat(result.toFixed(4)).toString();
this.renderValue();
},

clickOperator(o) {
if (this.operator && this.displayValue !== "") {
this.enteredValues.push(this.displayValue);
this.clickEquals();
} else {
this.enteredValues.push(this.displayValue);
}
this.operator = o;
this.displayValue = "";
},

clickEquals() {
if (this.enteredValues.length < 1) {
return;
}
this.enteredValues.push(this.displayValue);
const operation = OPERATOR_MAP[this.operator];

if (operation) {
this.calculate(+this.enteredValues[0], +this.enteredValues[1], operation);
}

this.operator = "";
this.enteredValues = [this.displayValue]; // Store the result for further calculations
},
};

numbers.forEach((e) =>
e.addEventListener("click", () => calculator.clickNumber(e.innerText))
);
clearBtn.addEventListener("click", () => calculator.clear());
operators.forEach((e) =>
e.addEventListener("click", () => calculator.clickOperator(e.innerText))
);
equalsBtn.addEventListener("click", () => calculator.clickEquals());

calculator.renderValue();
38 changes: 38 additions & 0 deletions index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>100Devs Calculator</title>
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
href="https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap"
rel="stylesheet"
/>
<link rel="stylesheet" href="styles.css" />
<script src="app.js" defer></script>
</head>
<body>
<section class="mainContainer">
<section class="display"></section>
<div class="button clear">C</div>
<div class="button operation">÷</div>
<div class="button number">7</div>
<div class="button number">8</div>
<div class="button number">9</div>
<div class="button operation">×</div>
<div class="button number">4</div>
<div class="button number">5</div>
<div class="button number">6</div>
<div class="button operation">-</div>
<div class="button number">1</div>
<div class="button number">2</div>
<div class="button number">3</div>
<div class="button operation">+</div>
<div class="button zero number">0</div>
<div class="button decimal number">.</div>
<div class="button equals">=</div>
</section>
</body>
</html>
97 changes: 97 additions & 0 deletions styles.css
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Original file line number Diff line number Diff line change
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* {
margin: 0;
padding: 0;
box-sizing: border-box;
}

body,
html {
height: 100vh;
width: 100vw;
}

body {
display: flex;
justify-content: center;
align-items: center;
background-color: #ffdee9;
background-image: linear-gradient(0deg, #ffdee9 0%, #b5fffc 100%);
font-family: "Poppins";
}

.mainContainer {
background-color: #4d4855;
background-image: linear-gradient(147deg, #4d4855 0%, #000000 74%);
box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
width: 300px;
height: 450px;
border-radius: 16px;
display: grid;
grid-template-columns: 1fr 1fr 1fr 1fr;
justify-items: center;
}

.display {
width: 90%;
height: 100px;
background-color: white;
margin: 20px 10px 10px 10px;
border-radius: 8px;
grid-column-start: 1;
grid-column-end: -1;
display: flex;
align-items: center;
justify-content: flex-end;
font-size: 3em;
padding-right: 20px;
overflow: hidden;
}

.button {
display: flex;
justify-content: center;
align-items: center;
color: black;
width: 40px;
height: 40px;
border-radius: 50%;
background-color: white;
cursor: pointer;
font-weight: 600;
font-size: 1.3em;
transition: 0.1s all;
box-shadow: rgba(50, 50, 93, 0.25) 0px 50px 100px -20px,
rgba(0, 0, 0, 0.3) 0px 30px 60px -30px,
rgba(10, 37, 64, 0.35) 0px -2px 6px 0px inset;
user-select: none;
}

.zero {
grid-column-start: 1;
grid-column-end: 3;
width: 75%;
border-radius: 8px;
}
.clear {
grid-column-start: 1;
grid-column-end: 4;
width: 85%;
border-radius: 8px;
}

.clear,
.operation,
.equals {
background-color: pink;
}

.number,
.decimal {
background-color: white;
}

.button:active {
box-shadow: rgba(50, 50, 93, 0.5) 0px 60px 120px -20px,
rgba(0, 0, 0, 0.6) 0px 40px 80px -30px,
rgba(10, 37, 64, 0.7) 0px -2px 8px 0px inset;
}