function LikesDislikes () {
$.ajax({
url: 'http://gdata.youtube.com/feeds/api/videos/keDZXXDxK1c/ratings',
type:"POST",
data: '<?xml version="1.0" encoding="UTF-8"?>
<entry xmlns="http://www.w3.org/2005/Atom"
xmlns:yt="http://gdata.youtube.com/schemas/2007">
<yt:rating value="like"/>
</entry>',
headers: {
"Content-Type":"application/atom+xml",
"Content-Length":,
"Authorization":"Bearer ya29.AHES6ZQ59RrQgujZmIjssBdYlwwLVrpCodnirdLROi7-g7U",
"X-GData-Key":"key=AIzaSyAPrtP2Tq4m5WVInCvCWptVAKPhQ4SQNZA",
"GData-Version":"2"
},
// Content-Type:"application/atom+xml",
error: function() { alert("No data found."); },
// contentType: "text/xml",
success: function (response) {
alert('response:' + response);
}
});
}
如何计算上述代码中的Content-Length
?