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index.html
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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, viewport-fit=cover" />
<meta name="Description" content="Put your description here.">
<link href="https://fonts.googleapis.com/css?family=Roboto&display=swap" rel="stylesheet">
<style>
html, body {
margin: 0;
padding: 0;
font-family: 'Roboto', sans-serif;
background-color: #ededed;
--button-raised-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14),
0 1px 5px 0 rgba(0, 0, 0, 0.12),
0 3px 1px -2px rgba(0, 0, 0, 0.2);
}
header {
height: 64px;
padding: 0 24px;
display: flex;
align-items: center;
flex-direction: row;
color: #ffffff;
background-color: #2196F3;
}
h1 {
font-size: 34px;
font-weight: 400;
letter-spacing: -.01em;
line-height: 40px;
}
.wrapper {
width: 600px;
margin: 40px auto;
}
.calculator-frame {
border: 1px #9E9E9E solid;
border-radius: 4px;
padding: 12px;
background-color: #fff;
display: flex;
flex-direction: column;
}
.calculator-display {
display: flex;
flex-direction: column;
margin-bottom: 12px;
}
.display-parts,
.display-result {
display: block;
margin: 4px 0;
text-align: right;
}
.display-result {
font-size: 34px;
font-weight: 400;
letter-spacing: -.01em;
line-height: 40px;
}
.display-parts {
font-size: 14px;
font-weight: 400;
line-height: 20px;
color: #616161;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.calculator-actions {
display: flex;
flex-direction: row;
}
.numeric-actions {
flex: 3;
display: grid;
grid-template-columns: repeat(3, 1fr);
grid-gap: 12px;
}
.operation-actions {
flex: 1;
display: grid;
grid-template-columns: repeat(1, 1fr);
grid-gap: 12px;
margin-left: 12px;
}
.operation-action {
padding: 12px;
}
button.action {
background-color: #EEEEEE;
border-radius: 4px;
outline: none;
border: none;
cursor: pointer;
transition: box-shadow 120ms ease-in-out 0ms;
will-change: box-shadow;
font-size: 14px;
font-weight: 400;
line-height: 20px;
}
button.action:active {
box-shadow: var(--button-raised-shadow);
}
button.numeric-action:hover,
button.numeric-action:focus,
button.numeric-action:active {
background-color: #E0E0E0;
}
button.sum {
background-color: #1976D2;
color: #fff;
}
button.sum:hover,
button.sum:focus {
background-color: #1565C0;
}
button.operation-action {
background-color: #E0E0E0;
}
button.operation-action:hover,
button.operation-action:focus,
button.operation-action:active {
background-color: #BDBDBD;
}
.info {
font-size: 14px;
font-weight: 400;
line-height: 20px;
color: #616161;
margin-left: 12px;
}
</style>
<title>demo-calculator</title>
</head>
<body>
<header class="app-header">
<h1>Demo calculator</h1>
</header>
<section role="main" class="wrapper">
<div class="calculator-frame">
<div class="calculator-display">
<span id="partsResult" class="display-parts"> </span>
<span id="opResult" class="display-result">0</span>
</div>
<div class="calculator-actions">
<div class="numeric-actions">
<button class="action numeric-action" data-value="1">1</button>
<button class="action numeric-action" data-value="2">2</button>
<button class="action numeric-action" data-value="3">3</button>
<button class="action numeric-action" data-value="4">4</button>
<button class="action numeric-action" data-value="5">5</button>
<button class="action numeric-action" data-value="6">6</button>
<button class="action numeric-action" data-value="7">7</button>
<button class="action numeric-action" data-value="8">8</button>
<button class="action numeric-action" data-value="9">9</button>
<button class="action numeric-action" data-value="dot">.</button>
<button class="action numeric-action" data-value="0">0</button>
<button class="action numeric-action sum" data-value="sum">=</button>
</div>
<div class="operation-actions">
<button class="action operation-action" data-value="div">÷</button>
<button class="action operation-action" data-value="mul">x</button>
<button class="action operation-action" data-value="sub">-</button>
<button class="action operation-action" data-value="add">+</button>
</div>
</div>
</div>
<p class="info">Press ESC key to clear the result</p>
</section>
<script type="module">
import { CalculatorApp } from './src/demo-calculator.js';
const app = new CalculatorApp();
app.init();
</script>
</body>
</html>