嗨,我正在尝试创建一个显示当前天气的网站(目前在3个城市)。我的问题是,当交换机处于ON位置时,我不知道如何只获取要更新的JSON数据。 (所以我不想在间隔后重新加载页面,我只是想在一段时间后自动更新温度等。)
这是我的实施。似乎无法弄清楚这一点,因为在我看来这应该有效:D现在盯着这个太久了。
function setup() {
var dropinput = document.getElementById("city-dropdown");
var value = dropinput.options[dropinput.selectedIndex].value;
var url = api + value + units + apiKey;
fetch(url).then(
function(response) {
if (response.status !== 200) {
console.log('Looks like there was a problem. Status Code: ' +
response.status);
return;
}
response.json().then(function(data) {
document.getElementById("temp").innerHTML = 'Temperature: ' + data.main.temp + ' Celsius'
document.getElementById("wind").innerHTML = 'Wind: ' + data.wind.speed + ' m/s'
document.getElementById("humidity").innerHTML = 'Humidity: ' + data.main.humidity + '%'
});
}
)
}
var interval = null;
function autoupdate() {
var checkBox = document.getElementById("switch");
if (checkBox.checked == true) {
interval = setInterval(setup(), 1000);
} else {
clearInterval(interval);
}
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Test</title>
<link rel="stylesheet" type="text/css" href="style.css">
<script src="slideshow.js"></script>
</head>
<body onload="setup()">
<div class="container">
<h1>Check the weather!</h1>
<fieldset>
<form action="/" method="post">
<select name="city" id="city-dropdown">
<option value="Helsinki">Helsinki</option>
<option value="Turku">Turku</option>
<option value="Kuusamo">Kuusamo</option>
</select>
<button class="nappi" type="button" onclick="setup()">Get weather</button>
</form>
</fieldset>
<p id="temp">Temperature: </p>
<p id="wind">Wind: </p>
<p id="humidity">Humidity: </p>
</div>
<div class="update">
<p id="autoupdate">Auto-update:</p>
<label class="switch">
<input type="checkbox" id="switch" onclick="autoupdate()">
<span class="slider round"></span>
</label>
</div>
</body>
</html>
你需要这样做:
setInterval(function(){setup()}, 1000);