Question

我正在创建一个基本的天气应用程序。它从开放天气API获取天气数据，然后显示温度和位置。我找到了SKYCONS，并认为这将是一个很好的方式来添加图标到我的应用程序。但是，它们不会出现。

<link rel="stylesheet" href="bootstrap.css"/>
<link rel="stylesheet" href="style.css"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<script src="https://rawgithub.com/darkskyapp/skycons/master/skycons.js"></script>
<script src="Script.js"></script>


<body>
    <div class="col-xs-12 text-center">
        <h1>Weather App</h1>
        <div class="container">
            <br>
            <h3><span id = "city">{City here}</span><span id = "country">{Country here}</span></h3>
            <h1><span id = "temperature">{Temperature here}</span><span id="unit">&#8457</span></h1>
            <h2><span id = "weather">{Weather here}</span></h2>
            <br>
            <p class = "text"></p>
            <br>
            <figure id = "icon"><canvas id="partly-cloudy-night" width="175" height="175"></canvas></figure>
            <br>
        </div>
    </div>
</body>

这是脚本：

$(document).ready(function(){

    // gets user's location; shows Earth weather if location cannot be accessed
    var longitude = 0;
    var latitude = 0;
    if (navigator.geolocation) {
        navigator.geolocation.getCurrentPosition(function(position) {
            latitude = Math.floor(position.coords.latitude);
            longitude = Math.floor(position.coords.longitude);
        });
    }

    $.getJSON("http://api.openweathermap.org/data/2.5/weather?lat=" + latitude + "&lon=" + longitude + "&appid=44db6a862fba0b067b1930da0d769e98", function(json){

        // gets data from json
        $("#city").html(json.name);
        $("#country").html(", " + json.sys.country);
        var weather = json.weather[0].main;
        $("#weather").html(weather);
        var tempInKelvin = parseFloat(json.main.temp);
        var tempInCelsius = Math.round((tempInKelvin - 273.15)*10)/10;
        var tempInFahrenheit = tempInCelsius + 32;
        $("#temperature").html(tempInFahrenheit); // shows temperature in Fahrenheit by default

        // switches between Fahrenheit and Celsius when clicked
        var iterator = 1; // because .toggle() was deprecated in jQuery 1.9
        $("#unit").on("click", function(){
            if (iterator % 2 == 1) { 
                $("#unit").html("&#8451"); // change to Celsius
                $("#temperature").html(tempInCelsius);
            } else {
                $("#unit").html("&#8457"); // change back to Fahrenheit
                $("#temperature").html(tempInFahrenheit);
            }
            iterator++;
        });

        // Changes background according to time of day
        var time = new Date();
        time = time.getHours();
        var color =  "";
        if (time >= 19 || time <= 4) {
            color = "#283048";
        } else if (time >= 17) {
            color = "#F0CB35";
        } else if (time >= 7) {
            color = "#C02425";
        } else {
            color = "#FF512F";
        }

        $("body").css("background-color", color);

        // adds icon, depending on time and weather
        var icons = new Skycons({"color": "red"});
        var htmlToAdd = '';
        switch (weather.toLowerCase()) {
            case "clouds":
                if (time >= 19 || time <= 4) {
                    htmlToAdd = '<canvas id="partly-cloudy-night" width="175" height="175"></canvas>';
                    icons.set("partly-cloudy-night", Skycons.PARTLY_CLOUDY_NIGHT);
                } else {
                    htmlToAdd = '<canvas id="cloudy" width="175" height="175"></canvas>';
                    icons.set("cloudy", Skycons.CLOUDY);
                }
                $("#weather").html("Cloudy");
                break;
            case "rain":
                htmlToAdd = '<canvas id="rain" width="175" height="175"></canvas>';
                icons.set("rain", Skycons.RAIN);
                break;
            case "snow":
                htmlToAdd = '<canvas id="snow" width="175" height="175"></canvas>';
                icons.set("snow", Skycons.SNOW);
                break;
            case "clear":
                if (time >= 19 || time <= 4) {
                    htmlToAdd = '<canvas id="clear-night" width="175" height="175"></canvas>';
                    icons.set("clear-night", Skycons.CLEAR_NIGHT);
                } else {
                    htmlToAdd = '<canvas id="clear-day" width="175" height="175"></canvas>';
                    icons.set("clear-day", Skycons.CLEAR_DAY);
                }
                break;
            default:
                htmlToAdd = '<canvas id="rain" width="175" height="175"></canvas>';
                icons.set("rain", Skycons.RAIN);
        }

        $("#icon").html(htmlToAdd);
        icons.play();
    });
});

是的，我知道我在getJSON中做了所有事情，但我不知道如何将json值存储到全局变量中，而没有getJSON的异步操作方式妨碍它。

Answer 1

我知道这是一个老问题但是如果有人在寻找答案，我遇到了同样的问题然后我认为可能是因为脚本在页面加载之前加载了。我将脚本移动到页面底部并且工作正常。

Skycons没有出现

1 个答案: