带有 jquery 的 jsonp
你能举一个用jquery读取jsonp请求的非常简单的例子吗?我就是无法让它工作.
Can you give a very simple example of reading a jsonp request with jquery? I just can't get it to work.
推荐答案
这里是工作示例:
<html><head><title>Twitter 2.0</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
</head><body>
<div id='tweet-list'></div>
<script type="text/javascript">
$(document).ready(function() {
var url = "http://api.twitter.com/1/statuses/user_timeline/codinghorror.json";
$.getJSON(url + "?callback=?", null, function(tweets) {
for(i in tweets) {
tweet = tweets[i];
$("#tweet-list").append(tweet.text + "<hr />");
}
});
});
</script>
</body></html>
请注意所请求 URL 末尾的 ?callback=?
.这向 getJSON
函数表明我们要使用 JSONP.删除它,将使用一个普通的 JSON 请求.由于同源政策,这将失败.
Notice the ?callback=?
at the end of the requested URL. That indicates to the getJSON
function that we want to use JSONP. Remove it and a vanilla JSON request will be used. Which will fail due to the same origin policy.
您可以在 JQuery 站点上找到更多信息和示例:http://api.jquery.com/jQuery.getJSON/
You can find more information and examples on the JQuery site: http://api.jquery.com/jQuery.getJSON/
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