如何实现自动更新的天气预报？

Question

请帮忙，目前我有一个错误`TypeError: weather.sys is undefined。我使用 Open Weather Map。我希望每个街区都能根据城市自动更新日期、水温和气温。我必须马上说地理定位将集中在俄罗斯我很高兴得到你的回答。

const api = {
 key: "11c85ec89d2ab590110511a07349dd25",
 baseurl: "https://api.openweathermap.org/data/2.5/"
}

const weather__wrapper = document.addEventListener('DOMContentLoaded', setQuery);
var check = document.querySelector('.weather__city').textContent;

function setQuery(evt) {
 const wrappers = document.querySelectorAll('.weather__wrapper');

 wrappers.forEach( w => {
    var city = w.querySelector('.weather__city');
    getResults(city);
 });
}


function getResults (query) {
 fetch(`${api.baseurl}weather?q=${query}&units=metric&APPID=${api.key}`)
 .then(weather=> {
  return weather.json();
 }).then(displayResults);
}


function displayResults(weather) {
 console.log(weather);
 let city = document.querySelectorAll('.weather__text .weather__city');
 city.innerText = `${weather.name}, ${weather.sys.country}`;

 let now = new Date();
 let date = document.querySelector('.weather__text .weather__date');
 date.innerText = dateBuilder(now);
}

function dateBuilder(d) {
 let months = ["01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12"];

 let date = d.getDate();
 let month = months[d.getMonth()];
 let year = d.getFullYear();

  return `${date}.${month}.${year}`;
}

.weather__wrapper {
 height: 186px;
 width: 355px;
 border-radius: 5px;
 background-color: #e4e8ef;
 padding: 24px 24px 24px 24px;


 margin-left: 30px; /* убрать */
}

.weather__icon {
 float: left;
 margin-top: 26px;
}

.weather__icon i {
 color: #fab165;
 font-size: 5.938em;
}

.weather__text {
 float: right;
}

.weather__city  { /* Локация, на видел input */
 font-weight: 400;
 font-size: 1.500em;
 margin-bottom: 0!important;
}

.weather__temperature {
 font-weight: 800;
 font-size: 1.500em;
 margin-bottom: 0!important;
}

.weather__date {
 font-size: 1.250em;
 font-weight: 200;
 margin-bottom: 0!important;
}

.slide-weather__items {
 display: flex;
 outline: none;
}

.slide-weather {
 margin-bottom: 100px;
}

<!DOCTYPE html>
<html lang="ru">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link rel="stylesheet" href="css/main.css">

</head>
<body>
    <div class="slide-weather">
        Hello
        <div class="slide-weather__items">
            <div class="weather__wrapper">
                <!-- weather on video -->
                <div class="weather__icon"><i class="fas fa-sun"></i></div>
                <div class="weather__text">
                    <p class="weather__city sochi">Sochi</p>
                    <div class="weather__current-temp">
                        <p class="weather__temperature">+23<sup>o</sup>C - air</p>
                    </div>
                    <div class="weather__water">
                        <p class="weather__temperature">+23<sup>o</sup>C - water</p>    
                    </div>
                    <p class="weather__date">29.05.2020</p>
                </div>
            </div>
            <div class="weather__wrapper">
                <!-- weather on video -->
                <div class="weather__icon"><i class="fas fa-sun"></i></div>
                <div class="weather__text">
                    <p class="weather__city">Novorossiysk</p>
                    <div class="weather__current-temp">
                        <p class="weather__temperature">+23<sup>o</sup>C - air</p>
                    </div>
                    <div class="weather__water">
                        <p class="weather__temperature">+23<sup>o</sup>C - water</p>    
                    </div>
                    <p class="weather__date">29.05.2020</p>
                </div>
            </div>
            <div class="weather__wrapper">
                <!-- weather on video -->
                <div class="weather__icon"><i class="fas fa-sun"></i></div>
                <div class="weather__text">
                    <p class="weather__city">Gelendzhik</p>
                    <div class="weather__current-temp">
                        <p class="weather__temperature">+23<sup>o</sup>C - air</p>
                    </div>
                    <div class="weather__water">
                        <p class="weather__temperature">+23<sup>o</sup>C - water</p>    
                    </div>
                    <p class="weather__date">29.05.2020</p>
                </div>
            </div>
        </div>
    </div>


    <script src="js/jquery-3.5.1.min.js"></script>
    <script src="js/weather.js"></script>
</body>
</html>

Answer 1

发生这种情况是因为您将整个标签作为城市名称而不是 innerHTML 传递：

getResults(city.innerHTML);

您收到 weather.sys 错误，因为天气变量不包含任何数据。所以你应该在 displayResults 函数中或调用它之前添加一些错误处理。

编辑：添加温度更新：

var parent = document.querySelector('.' + weather.name.toLowerCase()).parentNode
parent.querySelector('.weather__current-temp .weather__temperature').innerHTML = Math.round(weather.main.temp) + '<sup>o</sup>C - air';

这段代码很丑陋，但这只是它应该如何工作的一个例子。您应该将 temperature html 建筑物和父搜索移到一个单独的函数中。如果所有 weather__city 元素都具有城市类，这将起作用。

如果您不想添加城市类并且想通过 innerText 搜索父级，请查看此答案：How to get element by innerText

它是这样工作的：

const api = {
 key: "11c85ec89d2ab590110511a07349dd25",
 baseurl: "https://api.openweathermap.org/data/2.5/"
}

const weather__wrapper = document.addEventListener('DOMContentLoaded', setQuery);
var check = document.querySelector('.weather__city').textContent;

function setQuery(evt) {
 const wrappers = document.querySelectorAll('.weather__wrapper');

 wrappers.forEach( w => {
    var city = w.querySelector('.weather__city');
    getResults(city.innerHTML);
 });
}


function getResults (query) {
 fetch(`${api.baseurl}weather?q=${query}&units=metric&APPID=${api.key}`)
 .then(weather=> {
  return weather.json();
 }).then(displayResults);
}


function displayResults(weather) {
 let city = document.querySelectorAll('.weather__text .weather__city');
 city.innerText = `${weather.name}, ${weather.sys.country}`;

 let now = new Date();
 let date = document.querySelector('.weather__text .weather__date');
 date.innerText = dateBuilder(now);

    document.querySelector('.' + weather.name.toLowerCase()).parentNode.querySelector('.weather__current-temp .weather__temperature').innerHTML = Math.round(weather.main.temp) + '<sup>o</sup>C - air';
}

function dateBuilder(d) {
 let months = ["01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12"];

 let date = d.getDate();
 let month = months[d.getMonth()];
 let year = d.getFullYear();

  return `${date}.${month}.${year}`;
}

<!DOCTYPE html>
<html lang="ru">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link rel="stylesheet" href="css/main.css">

</head>
<body>
    <div class="slide-weather">
        Hello
        <div class="slide-weather__items">
            <div class="weather__wrapper">
                <!-- weather on video -->
                <div class="weather__icon"><i class="fas fa-sun"></i></div>
                <div class="weather__text">
                    <p class="weather__city sochi">Sochi</p>
                    <div class="weather__current-temp">
                        <p class="weather__temperature">+23<sup>o</sup>C - air</p>
                    </div>
                    <div class="weather__water">
                        <p class="weather__temperature">+23<sup>o</sup>C - water</p>    
                    </div>
                    <p class="weather__date">29.05.2020</p>
                </div>
            </div>
            <div class="weather__wrapper">
                <!-- weather on video -->
                <div class="weather__icon"><i class="fas fa-sun"></i></div>
                <div class="weather__text">
                    <p class="weather__city novorossiysk">Novorossiysk</p>
                    <div class="weather__current-temp">
                        <p class="weather__temperature">+23<sup>o</sup>C - air</p>
                    </div>
                    <div class="weather__water">
                        <p class="weather__temperature">+23<sup>o</sup>C - water</p>    
                    </div>
                    <p class="weather__date">29.05.2020</p>
                </div>
            </div>
            <div class="weather__wrapper">
                <!-- weather on video -->
                <div class="weather__icon"><i class="fas fa-sun"></i></div>
                <div class="weather__text">
                    <p class="weather__city gelendzhik">Gelendzhik</p>
                    <div class="weather__current-temp">
                        <p class="weather__temperature">+23<sup>o</sup>C - air</p>
                    </div>
                    <div class="weather__water">
                        <p class="weather__temperature">+23<sup>o</sup>C - water</p>    
                    </div>
                    <p class="weather__date">29.05.2020</p>
                </div>
            </div>
        </div>
    </div>


    <script src="js/jquery-3.5.1.min.js"></script>
    <script src="js/weather.js"></script>
</body>
</html>

如何实现自动更新的天气预报？

How to implement a weather forecast with automatic updates?

javascript

html

openweathermap