JavaScript Project - Weather App

In this tutorial, we will learn how to create a simple Weather App in JavaScript.

JavaScript Weather Application

Create a folder called weather-app as project workspace and we will create all the project files inside this folder.

1. index.html

Let's create index.html and add the following code to it:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Weather App</title> <link rel="stylesheet" href="style.css" /> <script src="script.js" defer></script> </head> <body> <form id="form"> <input type="text" id="search" placeholder="Search by location" autocomplete="off" /> </form> <main id="main"></main> </body> </html>

2. script.js

Let's create a JavaScript file named script.js and add the following JavaScript code to it:

const apikey = "3265874a2c77ae4a04bb96236a642d2f"; const main = document.getElementById("main"); const form = document.getElementById("form"); const search = document.getElementById("search"); const url = (city) => `https://api.openweathermap.org/data/2.5/weather?q=${city}&appid=${apikey}`; async function getWeatherByLocation(city) { const resp = await fetch(url(city), { origin: "cors" }); const respData = await resp.json(); console.log(respData); addWeatherToPage(respData); } function addWeatherToPage(data) { const temp = KtoC(data.main.temp); const weather = document.createElement("div"); weather.classList.add("weather"); weather.innerHTML = `  <h2><img src="https://openweathermap.org/img/wn/${data.weather[0].icon}@2x.png" /> ${temp}°C <img src="https://openweathermap.org/img/wn/${data.weather[0].icon}@2x.png" /></h2>  <small>${data.weather[0].main}</small>  `; // cleanup main.innerHTML = ""; main.appendChild(weather); } function KtoC(K) { return Math.floor(K - 273.15); } form.addEventListener("submit", (e) => { e.preventDefault(); const city = search.value; if (city) { getWeatherByLocation(city); } });

3. style.css

Let's create a CSS file named style.css and add the following CSS code to it:

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@200;400;600&display=swap"); * { box-sizing: border-box; } body { background: linear-gradient(300deg, #ced1d6, #bfc0c0); font-family: "Poppins", sans-serif; display: flex; flex-direction: column; align-items: center; justify-content: center; margin: 0; min-height: 100vh; } input { background-color: #fff; border: none; border-radius: 25px; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); font-family: inherit; font-size: 1rem; padding: 1rem; min-width: 300px; } input:focus { outline: none; } .weather { font-size: 2rem; text-align: center; } .weather h2 { display: flex; align-items: center; margin-bottom: 0; }

Open index.html in Browser

Let's open the index.html file in the browser, and you will be able to see the following screen:

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