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Performed Advanced UI Improvements #1223

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107 changes: 89 additions & 18 deletions BMICalculator/jadhav-kunal/index.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,28 +5,99 @@
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="style.css">
<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:wght@300;400;500;600;700&display=swap" rel="stylesheet">
<title>BMI Calculator</title>
</head>
<body>
<div class="background"></div>
<div class="container">
<h1>BMI Calculator</h1>
<form>
<p class="units"><label>Units: </label><select type="select" id="units">
<option>Metric</option>
<option>Imperial</option>
</select></p>
<p><label id="height-label">Height in CM: </label><input type="text" name="height" id="height"></p>
<p><label id="weight-label">Weight in KG: </label><input type="text" name="weight" id="weight"></p>
<button type="submit">Calculate</button>
<div id="results"></div>
<div id="weight-guide">
<h3>BMI Weight Guide</h3>
<p>Under Weight = Less than 18.6</p>
<p>Normal Range = 18.6 and 24.9</p>
<p>Overweight = Greater than 24.9</p>
</div>
</form>
<div class="calculator-card">
<div class="header">
<h1>BMI Calculator</h1>
<p class="subtitle">Calculate your Body Mass Index</p>
</div>

<form id="bmi-form">
<div class="form-group">
<label class="form-label">Measurement Units</label>
<div class="unit-toggle">
<button type="button" class="unit-btn active" data-unit="metric">Metric</button>
<button type="button" class="unit-btn" data-unit="imperial">Imperial</button>
</div>
</div>

<div class="input-group">
<label id="height-label" class="input-label">Height (cm)</label>
<div class="input-wrapper">
<input type="number" name="height" id="height" placeholder="Enter height" step="0.1" min="0">
<span class="input-unit" id="height-unit">cm</span>
</div>
</div>

<div class="input-group">
<label id="weight-label" class="input-label">Weight (kg)</label>
<div class="input-wrapper">
<input type="number" name="weight" id="weight" placeholder="Enter weight" step="0.1" min="0">
<span class="input-unit" id="weight-unit">kg</span>
</div>
</div>

<button type="submit" class="calculate-btn">
<span>Calculate BMI</span>
<svg width="20" height="20" viewBox="0 0 20 20" fill="none">
<path d="M7.5 15L12.5 10L7.5 5" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
</button>
</form>

<div id="results" class="results hidden">
<div class="bmi-value">
<span class="bmi-number" id="bmi-number">0</span>
<span class="bmi-label">BMI</span>
</div>
<div class="bmi-category" id="bmi-category">
<span id="category-text"></span>
</div>
<div class="bmi-range" id="bmi-range"></div>
</div>

<div class="weight-guide">
<h3>BMI Categories</h3>
<div class="guide-items">
<div class="guide-item underweight">
<div class="guide-color"></div>
<div class="guide-text">
<span class="guide-label">Underweight</span>
<span class="guide-range">&lt; 18.5</span>
</div>
</div>
<div class="guide-item normal">
<div class="guide-color"></div>
<div class="guide-text">
<span class="guide-label">Normal</span>
<span class="guide-range">18.5 - 24.9</span>
</div>
</div>
<div class="guide-item overweight">
<div class="guide-color"></div>
<div class="guide-text">
<span class="guide-label">Overweight</span>
<span class="guide-range">25 - 29.9</span>
</div>
</div>
<div class="guide-item obese">
<div class="guide-color"></div>
<div class="guide-text">
<span class="guide-label">Obese</span>
<span class="guide-range">≥ 30</span>
</div>
</div>
</div>
</div>
</div>
</div>
<script src="script.js"></script>
</body>
<script src="script.js"></script>
</html>
263 changes: 218 additions & 45 deletions BMICalculator/jadhav-kunal/script.js
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Open in desktop
Original file line number Diff line number Diff line change
@@ -1,59 +1,232 @@
const form = document.querySelector('form');
const units = document.querySelector('#units');
const form = document.querySelector('#bmi-form');
const unitButtons = document.querySelectorAll('.unit-btn');
const heightLabel = document.querySelector('#height-label');
const weightLabel = document.querySelector('#weight-label');
const height = document.querySelector('#height');
const weight = document.querySelector('#weight');
const heightInput = document.querySelector('#height');
const weightInput = document.querySelector('#weight');
const heightUnit = document.querySelector('#height-unit');
const weightUnit = document.querySelector('#weight-unit');
const resultsDiv = document.querySelector('#results');
const bmiNumber = document.querySelector('#bmi-number');
const categoryText = document.querySelector('#category-text');
const bmiRange = document.querySelector('#bmi-range');

let currentUnit = 'metric';

form.addEventListener('submit', function(e){
e.preventDefault();
const formData = new FormData(e.target);
const inputValues = Object.fromEntries(formData);
let height = +inputValues.height;
let weight = +inputValues.weight;
const results = document.querySelector('#results');
if(units.value === "Imperial") {
height = height * 2.54;
weight = weight * 0.453592;
console.log(units.value)
}
if((height === '') || (height < 0) || (isNaN(height))){
//NaN !== NaN
results.innerHTML = "Please provide a valid height";
// Unit toggle functionality
unitButtons.forEach(btn => {
btn.addEventListener('click', function() {
// Remove active class from all buttons
unitButtons.forEach(b => b.classList.remove('active'));
// Add active class to clicked button
this.classList.add('active');

currentUnit = this.dataset.unit;
updateLabels();

} else if (weight === '' || weight < 0 || isNaN(weight)){
results.innerHTML = "Please provide a valid weight";
// Convert values if they exist
if (heightInput.value || weightInput.value) {
convertValues();
}
});
});

function updateLabels() {
if (currentUnit === 'imperial') {
heightLabel.textContent = 'Height (in)';
weightLabel.textContent = 'Weight (lb)';
heightUnit.textContent = 'in';
weightUnit.textContent = 'lb';
} else {
//calculate BMI
const bmi = (weight / ((height*height)/10000)).toFixed(2);
//display the results
results.innerHTML = `<span>${bmi}</span>`
}
heightLabel.textContent = 'Height (cm)';
weightLabel.textContent = 'Weight (kg)';
heightUnit.textContent = 'cm';
weightUnit.textContent = 'kg';
}
}

function convertValues() {
if (currentUnit === 'imperial') {
// Convert from metric to imperial
if (heightInput.value) {
heightInput.value = (parseFloat(heightInput.value) / 2.54).toFixed(2);
}
if (weightInput.value) {
weightInput.value = (parseFloat(weightInput.value) / 0.453592).toFixed(2);
}
} else {
// Convert from imperial to metric
if (heightInput.value) {
heightInput.value = (parseFloat(heightInput.value) * 2.54).toFixed(2);
}
if (weightInput.value) {
weightInput.value = (parseFloat(weightInput.value) * 0.453592).toFixed(2);
}
}
}

function getBMICategory(bmi) {
if (bmi < 18.5) {
return {
category: 'underweight',
text: 'Underweight',
range: 'Below 18.5'
};
} else if (bmi >= 18.5 && bmi < 25) {
return {
category: 'normal',
text: 'Normal Weight',
range: '18.5 - 24.9'
};
} else if (bmi >= 25 && bmi < 30) {
return {
category: 'overweight',
text: 'Overweight',
range: '25 - 29.9'
};
} else {
return {
category: 'obese',
text: 'Obese',
range: '30 and above'
};
}
}

function displayResults(bmi) {
const categoryInfo = getBMICategory(bmi);

// Remove all category classes
resultsDiv.classList.remove('underweight', 'normal', 'overweight', 'obese');
// Add the appropriate category class
resultsDiv.classList.add(categoryInfo.category);

// Animate BMI number
animateValue(bmiNumber, 0, bmi, 1000);

// Update category text and range
categoryText.textContent = categoryInfo.text;
bmiRange.textContent = `BMI Range: ${categoryInfo.range}`;

// Show results
resultsDiv.classList.remove('hidden');

// Scroll to results smoothly
resultsDiv.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}

function animateValue(element, start, end, duration) {
let startTimestamp = null;
const step = (timestamp) => {
if (!startTimestamp) startTimestamp = timestamp;
const progress = Math.min((timestamp - startTimestamp) / duration, 1);
const current = progress * (end - start) + start;
element.textContent = current.toFixed(1);
if (progress < 1) {
window.requestAnimationFrame(step);
} else {
element.textContent = end.toFixed(1);
}
};
window.requestAnimationFrame(step);
}

form.addEventListener('submit', function(e) {
e.preventDefault();

let height = parseFloat(heightInput.value);
let weight = parseFloat(weightInput.value);

// Validation
if (!height || height <= 0 || isNaN(height)) {
showError('Please enter a valid height');
heightInput.focus();
return;
}

if (!weight || weight <= 0 || isNaN(weight)) {
showError('Please enter a valid weight');
weightInput.focus();
return;
}

// Convert to metric if imperial
if (currentUnit === 'imperial') {
height = height * 2.54; // inches to cm
weight = weight * 0.453592; // pounds to kg
}

// Validate converted values
if (height < 50 || height > 300) {
showError('Height should be between 50cm and 300cm (or equivalent)');
return;
}

if (weight < 10 || weight > 500) {
showError('Weight should be between 10kg and 500kg (or equivalent)');
return;
}

// Calculate BMI: weight (kg) / height (m)²
// Height is in cm, so we divide by 100 to get meters
const heightInMeters = height / 100;
const bmi = weight / (heightInMeters * heightInMeters);

// Display results
displayResults(bmi);
});

function showError(message) {
// Remove any existing error styling
heightInput.style.borderColor = '';
weightInput.style.borderColor = '';

// Show error message (you could add a toast notification here)
alert(message);

// Add error styling to inputs
if (!heightInput.value || heightInput.value <= 0) {
heightInput.style.borderColor = '#ff6b6b';
}
if (!weightInput.value || weightInput.value <= 0) {
weightInput.style.borderColor = '#ff6b6b';
}

// Remove error styling after 3 seconds
setTimeout(() => {
heightInput.style.borderColor = '';
weightInput.style.borderColor = '';
}, 3000);
}

// Allow user to change between metric and imperial.
units.addEventListener('change', (e) => {
if(e.target.value === 'Imperial') {
heightLabel.textContent = "Height in IN: "
weightLabel.textContent = "Weight in LB: "
// Add input validation on blur
heightInput.addEventListener('blur', function() {
const value = parseFloat(this.value);
if (this.value && (value <= 0 || isNaN(value))) {
this.style.borderColor = '#ff6b6b';
} else {
this.style.borderColor = '';
}
});

if(height.value){
// convert current input to imperial
height.value = (+height.value / 2.54).toFixed(2);
weight.value = (+weight.value / 0.453592).toFixed(2);
weightInput.addEventListener('blur', function() {
const value = parseFloat(this.value);
if (this.value && (value <= 0 || isNaN(value))) {
this.style.borderColor = '#ff6b6b';
} else {
this.style.borderColor = '';
}
} else {
heightLabel.textContent = "Height in CM: "
weightLabel.textContent = "Weight in KG: "
});

if(height.value){
// convert current input to metric
height.value = (+height.value * 2.54).toFixed(2);
weight.value = (+weight.value * 0.453592).toFixed(2);
// Allow Enter key to submit
heightInput.addEventListener('keypress', function(e) {
if (e.key === 'Enter') {
weightInput.focus();
}
}

});

} )
weightInput.addEventListener('keypress', function(e) {
if (e.key === 'Enter') {
form.dispatchEvent(new Event('submit'));
}
});
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