JS点击复制

<!DOCTYPE html>
<html lang="en">
<head>
    <title>index</title>
    <meta charset="utf-8">
    <script src="./src/js/jquery.min.js"></script>
</head>
<body>
<button data-url='https://myfly.vip/下载测试.txt' onclick="downloadTrans(this)">下载</button>
<script>
    function downloadTrans(self) {

        let url = $(self).attr('data-url');
        let file_name = $(self).attr('data-file-name');
        var xhr = new XMLHttpRequest();
        xhr.open("GET", url, true); // true: 异步处理，false: 同步处理
        xhr.responseType = "blob"; // 将响应类型设置为blob
        xhr.onload = function () {
            if (xhr.status == 200) {
                var blob = xhr.response; // 根据响应获取blob对象
                var downloadLink = document.createElement("a");
                downloadLink.href = window.URL.createObjectURL(blob);
                downloadLink.download = file_name; // 文件名
                downloadLink.click();
            }
        };
        xhr.send();
    }
</script>
</body>

</html>