我有一个小型天气应用程序。我通过“POST”请求获取天气数据并将其附加到文档中,效果很好。
用户可以按城市查询天气,现在我想使用单独的 jQuery $Ajax() 请求加载该城市的图像。
但是,我总是得到相同的结果。
与应用程序相关的应用程序结构如下所示:
<input id="getIt" name="cityajax" type="text" class="ghost-input"
placeholder="Enter a City" required> // get user input, querying a city
<button id="submit">Submit</button>
<span class="humidLogo">Current humidity:</span> <i class="fas fa-temperature-low" ></i> <span class="apiHumidity"> % </span>
<div class="FlickResponse"></div> // flickrResposnse gets appended here
</div>
CSS不相关,所以我立即跟进相关的JS功能:
var destination = $("#getIt").val(); // cache the user input, I am not sure I have to listen for a change event here and then update the state.
var flickerAPI =
"https://api.flickr.com/services/feeds/photos_public.gne?format=json&tags=" +
destination; // the url to get access the api
$.ajax({
url: flickerAPI,
dataType: "jsonp", // jsonp
jsonpCallback: "jsonFlickrFeed", // add this property
success: function(result, status, xhr) {
$(".FlickResponse").html(""); // here I want to empty the contents of the target div, but this never happens
$.each(result.items, function(i, item) {
$("<img>")
.attr("src", item.media.m)
.addClass("oneSizeFitsAll")
.appendTo(".FlickResponse");
if (i === 1) {
return false;
}
});
},
error: function(xhr, status, error) {
console.log(xhr);
$(".FlickResponse").html(
"Result: " +
status +
" " +
error +
" " +
xhr.status +
" " +
xhr.statusText
);
}
});
仅此而已。那么为什么我总是从 API 得到相同的响应呢?我是否必须监听输入字段上的更改事件?因为 POSt 请求无需更改事件监听器即可工作。
是因为我正在查询 2 个 API,并且我使用相同的输入字段作为值(愚蠢的问题,但你永远不知道 x)。?
这是一个包含完整代码的 Codepen,只需输入城市并单击提交按钮即可:
最佳答案
我会将图像检索(和天气查找)放入另一个函数中,如下所示,那么就可以了!
我已经 fork 到另一个代码笔:updated example
function loadDestinationImage() {
var destination = ($("#getIt").val());
var flickerAPI = "https://api.flickr.com/services/feeds/photos_public.gne?format=json&tags=" + destination;
$.ajax({
url: flickerAPI,
dataType: "jsonp", // jsonp
jsonpCallback: 'jsonFlickrFeed', // add this property
success: function (result, status, xhr) {
$(".FlickResponse").html("");
$.each(result.items, function (i, item) {
$("<img>").attr("src", item.media.m).addClass("oneSizeFitsAll").appendTo(".FlickResponse");
if (i === 1) {
return false;
}
});
},
error: function (xhr, status, error) {
console.log(xhr)
$(".FlickResponse").html("Result: " + status + " " + error + " " + xhr.status + " " + xhr.statusText)
}
});
}
我也会对天气做同样的事情:
function loadWeather() {
var destination = ($("#getIt").val());
$.post("https://api.openweathermap.org/data/2.5/weather?q=" +
destination +
"&units=metric&appid=15c9456e587b8b790a9092494bdec5ff",
function (result, status, xhr) {
var APIresponded = result["main"]["temp"];
var APIweather = result["weather"][0]["description"];
var sunGoing = result["sys"]["sunset"];
var output = destination.capitalize();
var humidValue = result["main"]["humidity"];
var windy = result["wind"]["speed"];
var windDirection = result["wind"]["deg"];
if (windDirection <= 90) {
windDirection = "southwest"
}
if (windDirection <= 180) {
windDirection = "northwest"
}
if (windDirection <= 270) {
windDirection = "northeast"
}
if (windDirection <= 360) {
windDirection = "southeast"
}
if (APIweather.includes("snow")) {
$('#displaySky').addClass('far fa-snowflake');
}
if (APIweather.includes("rain")) {
$('#displaySky').addClass('fas fa-cloud-rain');
}
if (APIweather.includes("overcast")) {
$('#displaySky').addClass('fas fa-smog');
}
if (APIweather.includes("sun") || APIweather.includes("clear")) {
$('#displaySky').addClass('fas fa-sun');
}
if (APIweather.includes("scattered")) {
$('#displaySky').addClass('fas fa-cloud-sun');
}
$("#message").html("The temperature in " + output + " is : " + APIresponded + " degrees. The sky looks like this: ");
$(".apiHumidity").text(humidValue + " %");
$('.apiWind').html(windy + 'km per hour. The wind direction is ' + windDirection);
console.log(APIweather);
}
).fail(function (xhr, status, error) {
alert("Result: " + status + " " + error + " " +
xhr.status + " " + xhr.statusText);
});
}
并从提交函数调用:
$("#submit").click(function (e) {
loadDestinationImage();
loadWeather();
});
关于javascript - Flickr API 始终返回相同的数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54237393/