问题
I saw some examples of cross domain with ajax but it doesn't work.
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fr" lang="fr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
</head>
<body>
<script type="text/javascript" >
$(document).ready(function () {
var url = "http://api.twitter.com/1/statuses/user_timeline.json?screen_name=AssasNet&include_rts=1";
$.get(url, function (data) {
console.log(data)
alert(data);
});
});
</script>
</body>
</html>
I try on chrome and the following error is given:
XMLHttpRequest cannot load http://api.twitter.com/1/statuses/user_timeline.json?screen_name=AssasNet&include_rts=1. Origin null is not allowed by Access-Control-Allow-Origin.
回答1:
You can't use $.get because that does an ajax call, which will be cross-origin and thus blocked by the Same Origin Policy, and the Twitter API you're trying to access doesn't support Cross-Origin Resource Sharing (or if it does, it doesn't allow either origin null or http://jsbin.com, which is the one I tried).
The API does support JSONP (which is not a true ajax call), though, so just changing the $.get to an $.ajax specifying JSONP works:
$.ajax({
url: url,
dataType: "jsonp",
success: function (data) {
console.log(data)
alert(data);
}
});
Live Example | Source
来源：https://stackoverflow.com/questions/15369577/cross-domain-jquery-get