我们如果在页面中先准备好函数，然后给页面动态加一个
<script>节点，相当于动态读取外域的JavaScript资源，最后就等着接收回调了。以网易的股票查询URL为例，对于URL：http://api.money.126.net/data/feed/0000001,1399001?callback=refreshPrice
1.准备好回调函数
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>获取股票价格</title>
</head>
<body>
<p id="netease-jsonp"></p>
<p><button type="button" onclick="getPrice()">获取价格</button></p>
<script>
function refreshPrice(data) {
let p = document.getElementById('netease-jsonp');
p.innerHTML = data['0000001'].name + ':' +
data['0000001'].price;
}
</script>
<script src="js/getstockprice.js"></script>
</body>
</html>2.接受价格函数
function getPrice() {
let
js = document.createElement('script'),
head = document.getElementsByTagName('head')[0];
js.src = 'http://api.money.126.net/data/feed/0000001,1399001?callback=refreshPrice';
head.appendChild(js);
}){kind=link}