JavaScript 用fetch 实现异步下载文件功能
时间:2020-12-02 11:58:36|栏目:JavaScript代码|点击: 次
废话不多说了,直接给大家贴代码了,具体代码如下所示:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>sample</title> </head> <body> <button id='btn'>下载</button> <span id='status'></span> </body> <script> var url = "http://localhost/sample/upload.php"; document.getElementById('btn').onclick = function() { document.getElementById('status').innerHTML = '下载中'; fetch(url).then(res => res.blob().then(blob => { var a = document.createElement('a'); var url = window.URL.createObjectURL(blob); var filename = res.headers.get('Content-Disposition'); a.href = url; a.download = filename; a.click(); window.URL.revokeObjectURL(url); document.getElementById('status').innerHTML = '下载完成'; })); }; </script> </html>
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