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feat(BMI calculator): add unit toggle, localStorage with list & chart history, improved UI/UX #79

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Merged
merged 2 commits into from
Oct 17, 2025
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feat(BMI calculator): add unit toggle, localStorage with list & chart history, improved UI/UX #79

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feat: add BMI calculator with unit toggle, localStorage with list & c…
nur-hasin Oct 17, 2025
61f4617
Merge branch 'main' into feat/add-bmi-history-and-ui-improvements
nur-hasin Oct 17, 2025
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105 changes: 91 additions & 14 deletions projects/bmi/index.html
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Original file line number Diff line number Diff line change
@@ -1,24 +1,101 @@
<!doctype html>
<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>BMI Calculator</title>
<link rel="stylesheet" href="./styles.css">
<link rel="stylesheet" href="styles.css">
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
</head>

<body>
<main>
<h1>BMI Calculator</h1>
<form id="form"><input id="kg" name="kg" type="number" step="0.1" placeholder="Weight (kg)" required>
<input id="cm" name="cm" type="number" step="0.1" placeholder="Height (cm)" required>
<button type="submit">Calculate</button>
</form>
<div id="out" aria-live="polite"></div>
<p class="notes">Add validation and history with localStorage.</p>
</main>
<script type="module" src="./main.js"></script>
<div class="container">
<!-- Header -->
<div class="header">
<h1 class="main-title">BMI Calculator</h1>
<p class="subtitle">Track your Body Mass Index, monitor progress & stay healthy</p>
</div>

<!-- Main Calculator Card -->
<div class="card">
<h2 class="card-title">Calculate Your BMI</h2>

<!-- Unit Toggle -->
<div class="unit-toggle">
<button id="metricBtn" class="unit-btn active" type="button">Metric Units</button>
<button id="imperialBtn" class="unit-btn" type="button">Imperial Units</button>
</div>

<!-- Calculator Form -->
<form id="bmiForm" class="form" novalidate>
<div class="input-row">
<div class="input-group">
<label for="weightInput" class="input-label">Weight</label>
<div class="input-wrapper">
<input id="weightInput" type="number" step="0.1" placeholder="Enter weight" class="input"
aria-describedby="weightError" aria-required="true" aria-invalid="false">
<div class="input-arrows">
<div class="arrow-btn" id="weightUp">▲</div>
<div class="arrow-btn" id="weightDown">▼</div>
</div>
</div>
<div id="weightError" class="field-error" role="alert"></div>
</div>

<div class="input-group">
<label for="heightInput" class="input-label">Height</label>
<div class="input-wrapper">
<input id="heightInput" type="number" step="0.1" placeholder="Enter height" class="input"
aria-describedby="heightError" aria-required="true" aria-invalid="false">
<div class="input-arrows">
<div class="arrow-btn" id="heightUp">▲</div>
<div class="arrow-btn" id="heightDown">▼</div>
</div>
</div>
<div id="heightError" class="field-error" role="alert"></div>
</div>
</div>

<button type="submit" class="calculate-btn" id="submitBtn">Calculate</button>
</form>

<!-- Results -->
<div id="result" class="result" role="region" aria-live="polite">
<div class="result-label">Your BMI Result</div>
<div id="bmiDisplay" class="bmi-display">
<div class="bmi-content">
<div class="bmi-value" id="bmiValue"></div>
<div class="bmi-category" id="bmiCategory"></div>
<div class="bmi-range" id="bmiRange"></div>
<div class="bmi-advice" id="bmiAdvice"></div>
</div>
</div>
</div>
</div>

<!-- History Card -->
<div class="card">
<h2 class="history-title">History</h2>
<div class="history-header">
<div class="history-controls">
<div class="view-toggle">
<button id="listViewBtn" class="view-btn active" type="button">List</button>
<button id="chartViewBtn" class="view-btn" type="button">Chart</button>
</div>
<button id="clearHistory" class="clear-btn" type="button">Clear All</button>
</div>
</div>

<!-- History List View -->
<div id="historyList" class="history-list"></div>

<!-- Chart View -->
<div id="chartContainer" class="chart-container"></div>
</div>
</div>

<script src="main.js"></script>
</body>

</html>
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