网上找了好多好多资料，获取想要头部信息....22222..直接贴代码，已测试可用
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>获取PPT总页数</title>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript">
$.ajax({
type: 'GET',
url: "http://xyz-1253118816.cos.ap-guangzhou.myqcloud.com/2021/02/07/161269131415570360.pptx?ci-process=doc-preview&page=1",
success: function(data,status,xhr){
var headers = xhr.getAllResponseHeaders();
var arr = headers.trim().split(/[\r\n]+/);
var headerMap = {};
arr.forEach(function (line) {
var parts = line.split(': ');
var header = parts.shift();
var value = parts.join(': ');
headerMap[header] = value;
});
console.info(headerMap);
//头部返回PPT总页数
console.info(headerMap['x-total-page']);
}
});
</script>
</head>
<body>
</body>
</html>
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