我想做的是利用Yahoo的Weather API，并根据天气条件代码执行一个javascript（可能是2，如雨和风）。
到目前为止，已经设法使Rain脚本作为内部源工作，但是当尝试添加第二个脚本作为外部源时，它只是加载而没有执行。我猜大概会有10个脚本，所以我猜最好使用外部资源。 正在寻找一些条件，以后再执行js。 尝试使用jQuery getScript，但它所做的只是加载而不执行脚本。
这是我到目前为止所做的。在下面的代码中，两个脚本都运行...我希望仅在验证了代码30的情况下运行snow脚本。
<!DOCTYPE html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<style type="text/css">
body {
margin: 0;
overflow: hidden;
background: #061928;
}
</style>
<body>
<div id="output"></div>
<canvas id="canvas"></canvas>
<script src="https://cdn.rawgit.com/scottschiller/Snowstorm/master/snowstorm-min.js"></script>
<script>
// 1. Define a color for the snow
snowStorm.snowColor = '#fff';
// 2. To optimize, define the max number of flakes that can
// be shown on screen at once
snowStorm.flakesMaxActive = 96;
// 3. Allow the snow to flicker in and out of the view
snowStorm.useTwinkleEffect = true;
// 4. Start the snowstorm!
snowStorm.start();
var pioggia=false;
var queryURL = "https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20in%20(select%20woeid%20from%20geo.places(1)%20where%20text%3D%22cinisello%20balsamo%2C%20it%22)&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys";
$.getJSON(queryURL, function (data) {
var canvas = $('#canvas')[0];
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
var results = data.query.results
var firstResult = results.channel.item.condition
var link = results.channel.image.link
var img_link_url = results.channel.image.url
var name = results.channel.location.city
console.log(firstResult);
console.log(link);
console.log(img_link_url);
var description = results.channel.item.description
console.log(description);
var regex = /img.*?src=("|')(.*?)\1/i;
var match = description.match(regex)[2];
console.log(match);
var location = firstResult.location // not returned in response
var temp = firstResult.temp
var text = firstResult.text
var code = firstResult.code
var img
console.log(code);
switch(code) {
case "0":
img = "/images/mono-flat/0.png";
break;
case "1":
img = "/images/mono-flat/1.png";
break;
case "2":
img = "/images/mono-flat/2.png";
break;
case "3":
img = "/images/mono-flat/3.png";
break;
case "4":
img = "/images/mono-flat/4.png";
break;
case "5":
img = "/images/mono-flat/5.png";
var pioggia=true;
break;
case "6":
img = "/images/mono-flat/6.png";
var pioggia=true;
break;
case "7":
img = "/images/mono-flat/7.png";
break;
case "8":
img = "/images/mono-flat/8.png";
break;
case "9":
img = "/images/mono-flat/9.png";
break;
case "10":
img = "/images/mono-flat/10.png";
var pioggia=true;
break;
case "11":
img = "/images/mono-flat/11.png";
var pioggia=true;
break;
case "12":
img = "/images/mono-flat/12.png";
var pioggia=true;
break;
case "13":
img = "/images/mono-flat/13.png";
break;
case "14":
img = "/images/mono-flat/14.png";
break;
case "15":
img = "/images/mono-flat/15.png";
break;
case "16":
img = "/images/mono-flat/16.png";
break;
case "17":
img = "/images/mono-flat/17.png";
break;
case "18":
img = "/images/mono-flat/18.png";
break;
case "19":
img = "/images/mono-flat/19.png";
break;
case "20":
img = "/images/mono-flat/20.png";
break;
case "21":
img = "/images/mono-flat/21.png";
break;
case "22":
img = "/images/mono-flat/22.png";
break;
case "23":
img = "/images/mono-flat/23.png";
break;
case "24":
img = "/images/mono-flat/24.png";
break;
case "25":
img = "/images/mono-flat/25.png";
break;
case "26":
img = "/images/mono-flat/26.png";
break;
case "27":
img = "/images/mono-flat/27.png";
var pioggia=true;
break;
case "28":
img = "/images/mono-flat/28.png";
break;
case "29":
img = "/images/mono-flat/29.png";
break;
case "30":
img = "/images/mono-flat/30.png";
break;
case "31":
img = "/images/mono-flat/31.png";
break;
case "32":
img = "/images/mono-flat/32.png";
break;
case "33":
img = "/images/mono-flat/33.png";
break;
case "34":
img = "/images/mono-flat/34.png";
break;
case "35":
img = "/images/mono-flat/35.png";
var pioggia=true;
break;
case "36":
img = "/images/mono-flat/36.png";
break;
case "37":
img = "/images/mono-flat/37.png";
break;
case "38":
img = "/images/mono-flat/38.png";
break;
case "39":
img = "/images/mono-flat/39.png";
break;
case "40":
img = "/images/mono-flat/40.png";
var pioggia=true;
break;
case "41":
img = "/images/mono-flat/41.png";
break;
case "42":
img = "/images/mono-flat/42.png";
break;
case "43":
img = "/images/mono-flat/43.png";
break;
case "44":
img = "/images/mono-flat/44.png";
break;
case "45":
img = "/images/mono-flat/45.png";
break;
case "46":
img = "/images/mono-flat/46.png";
break;
case "47":
img = "/images/mono-flat/47.png";
break;
default:
img = "/images/mono-flat/na.png";
}
<!-- FUNZIONE PIOGGIA-->
if (canvas.getContext) {
if(pioggia===true) {
var ctx = canvas.getContext('2d');
var w = canvas.width;
var h = canvas.height;
ctx.strokeStyle = 'rgba(174,194,224,0.5)';
ctx.lineWidth = 1;
ctx.lineCap = 'round';
var init = [];
var maxParts = 1000;
for (var a = 0; a < maxParts; a++) {
init.push({
x: Math.random() * w,
y: Math.random() * h,
l: Math.random() * 1,
xs: -4 + Math.random() * 4 + 2,
ys: Math.random() * 10 + 10
})
}
var particles = [];
for (var b = 0; b < maxParts; b++) {
particles[b] = init[b];
}
function draw() {
ctx.clearRect(0, 0, w, h);
for (var c = 0; c < particles.length; c++) {
var p = particles[c];
ctx.beginPath();
ctx.moveTo(p.x, p.y);
ctx.lineTo(p.x + p.l * p.xs, p.y + p.l * p.ys);
ctx.stroke();
}
move();
}
function move() {
for (var b = 0; b < particles.length; b++) {
var p = particles[b];
p.x += p.xs;
p.y += p.ys;
if (p.x > w || p.y > h) {
p.x = Math.random() * w;
p.y = -20;
}
}
}
setInterval(draw, 30);
}
}
<!-- FINE FUNZIONE PIOGGIA-->
<!--FUNZIONE NEVE-->
<!--FINE FUNZIONE NEVE-->
var cels = (temp - 32) * (5 / 9);
});
</script>
</body>
</head>
</html>