Code To Create Simple Barometer
<!DOCTYPE html>
<html lang=”en”>
<head>
<meta charset=”UTF-8″>
<meta name=”viewport” content=”width=device-width, initial-scale=1.0″>
<title>Weather Barometer</title>
<style>
body {
font-family: Arial, sans-serif;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background: #f0f0f0;
}
.barometer {
position: relative;
width: 300px;
height: 300px;
border: 10px solid #333;
border-radius: 50%;
background: #fff;
}
.needle {
position: absolute;
width: 50%;
height: 4px;
background: red;
top: 50%;
left: 50%;
transform-origin: left center;
transform: rotate(0deg);
transition: transform 1s;
}
.scale {
position: absolute;
width: 100%;
height: 100%;
top: 0;
left: 0;
}
.label {
position: absolute;
bottom: 10px;
width: 50px;
text-align: center;
transform: translateX(-50%);
}
</style>
</head>
<body>
<div class=”barometer”>
<div class=”needle” id=”needle”></div>
<div class=”scale”>
<div class=”label” style=”left: 0%”>Stormy</div>
<div class=”label” style=”left: 25%”>Rainy</div>
<div class=”label” style=”left: 50%”>Change</div>
<div class=”label” style=”left: 75%”>Fair</div>
<div class=”label” style=”left: 100%”>Dry</div>
</div>
</div>
<script>
document.addEventListener(“DOMContentLoaded”, function() {
const needle = document.getElementById(“needle”);
const apiKey = ‘a637924bcef24a25deb6d4fc2f9dd1ef’;
const city = ‘Kathmandu’;
function updateBarometer(pressure) {
const minPressure = 950;
const maxPressure = 1050;
const minAngle = -90;
const maxAngle = 90;
const angle = ((pressure – minPressure) / (maxPressure – minPressure)) * (maxAngle – minAngle) + minAngle;
needle.style.transform = `rotate(${angle}deg)`;
}
async function fetchWeatherData() {
try {
const response = await fetch(`https://api.openweathermap.org/data/2.5/weather?q=${city}&appid=${apiKey}&units=metric`);
const data = await response.json();
const pressure = data.main.pressure;
updateBarometer(pressure);
} catch (error) {
console.error(“Error fetching weather data:”, error);
}
}
fetchWeatherData();
});
</script>
</body>
</html>