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>
总结
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