script.js

let weather = {
    apiKey:"ae7656539a432d034c03740d03ec770e", 
     fetchWeather: function(city) {
        fetch(
        "https://api.openweathermap.org/data/2.5/weather?q="
        + city 
        + "&units=metric&appid=" 
        + this.apiKey
    )
       .then((response) => response.json())
       .then((data) => this.displayWeather(data));
    },
    displayWeather: function(data) {
        const { name } = data;
        const { icon,description } = data.weather[0];
        const { temp,humidity } = data.main;
        const { speed } = data.wind;
        document.querySelector(".city").innerText = "Weather in " + name;
        document.querySelector(".icon").src = 
        "http://openweathermap.org/img/wn/" + icon + ".png";
        document.querySelector(".description").innerText = description;
        document.querySelector(".temp").innerText = temp + "°C";
        document.querySelector(".humidity").innerText ="Humidity: " + humidity + "%";
        document.querySelector(".wind").innerText ="Wind speed: " + speed + "km/h";
        document.querySelector(".weather").classList.remove("loading");
        document.body.style.backgroundImage = "url('https://source.unsplash.com/1600x900/?" + name +"')";
    },
    search: function() {
        this.fetchWeather(document.querySelector(".search-bar").value);
    },
};

document.querySelector(".search button").addEventListener("click", function() {
    weather.search();
});

document.querySelector(".search-bar").addEventListener("keyup", function (event) {
    if (event.key == "Enter") {
        weather.search();
    }
});

weather.fetchWeather("Athens");