我正在构建一个天气应用程序，该应用程序使用天气IPA来显示每个城市的天气情况。我试图以度为单位显示风向，但只能在文字描述中显示，例如：“北风”，“北东风”，“东风”。我也想显示风。
如何在javascript中以度数（例如90°）显示风向（包括在数字后使用小圆圈度数符号？]
因为我正在使用数据文件，所以如果您想查看完整的代码，则无法使该代码在文本编辑器之外运行。
我只能共享最主要的部分代码。但请放心，我无法共享的部分是每个国家（C0）的城市数据文件please select。 -
在此代码中，我将风向显示为文字描述，以及如何以度为单位显示？
select a countryfunction text(d) {
let directions = ['Northerly', 'North Easterly', 'Easterly', 'South Easterly', 'Southerly', 'South Westerly', 'Westerly', 'North Westerly'];
d += 22.5;
if (d < 0)
d = 360 - Math.abs(d) % 360;
else
d = d % 360;
let w = parseInt(d / 45);
return `${directions[w]}`;
}function getData(selectedCounty) {
$.ajax({
url: 'http://api.openweathermap.org/data/2.5/weather?id=' + selectedCounty + '&appid=e4761ea183f1b15b7c6af8e63724a863',
type: 'GET',
dataType: 'json',
success: function(response) {
//display the chosen city and date from the requested data
$('#cityName').empty().append('Weather for ' + response.name + ' on ' + toDD_MM_YY_format(response.dt));
//display the city name div after the user choose country and city
$('#weatherInfo').empty().append(
'Weather Conditions: ' + response.weather[0].main + '</br>' +
'Temperature :' + toCelsius(response.main.temp) + '</br>' +
'Wind Speed :' + toMilesPerHour(response.wind.speed) + '</br>' +
'Wind Direction: ' + text(response.wind.deg));
displayWeatherIcon(response.weather[0].icon);
},
error: function() {
$('#errorInfo').show().html('<p> An error has occurred, Please try again later</p>');
$('#weatherInfo').empty();
}
});
}
//convert temperature in kelvin to Celsius.
function toCelsius(kelvin) {
var tempInCelsius = Math.round(kelvin - 273.15);
return tempInCelsius + '°C';
}
//converts speed in knots to miles per hour(mph)
function toMilesPerHour(knots) {
var speedInMilesPerHour = Math.round(knots * 1.15077945); //1 Knot = 1.15077945 mph
return speedInMilesPerHour + ' mph';
}
//converts UNIX time stamp in to readable format
function toDD_MM_YY_format(unixTimeStamp) {
var d = new Date(unixTimeStamp * 1000);
var month = (d.getMonth()) + 1; //unix time stamp month starts from 0.
var formattedDate = d.getDate() + "-" + month + "-" + d.getFullYear();
return formattedDate;
}
//convert the wind direction from degree to textual description.
function text(d) {
let directions = ['Northerly', 'North Easterly', 'Easterly', 'South Easterly', 'Southerly', 'South Westerly', 'Westerly', 'North Westerly'];
d += 22.5;
if (d < 0)
d = 360 - Math.abs(d) % 360;
else
d = d % 360;
let w = parseInt(d / 45);
return `${directions[w]}`;
}希望我的解释很好，请不要犹豫，问我问题。
谢谢。
因为您不确定我正在使用天气API，但也许可以尝试在<!DOCTYPE html>
<html>
<head>
<title>UK Weather Application</title>
<meta charset="UTF-8">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="apiweather.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<header>
<h1>UK Weather Data</h1>
</header>
<section id="content">
<h4>Current Weather Data</h4>
<select id="countries">
<option selected>Select a Country</option>
<option value="New York">New York</option>
<option value="Argentina">Argentina</option>
<option value="Australia">Australia</option>
<option value="Portugal">Portugal</option>
</select>
<select id="counties">
<option selected><<Please Select</option>
</select>
<div id="cityName"></div>
<div id="weatherInfo"></div>
<div id="errorInfo" hidden></div>
</section>
<footer>
</footer>
</body>
</html>中使用类似的方法>
text() function