這篇文章帶給大家的內容是關於js實作下載功能的程式碼實例，有一定的參考價值，有需要的朋友可以參考一下，希望對你有幫助。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>文件下载</title>
</head>
<body>
<div onclick="funDownload('1111111111','文档.txt')">点我啊</div>
<div onclick="download('你棒','https://ss0.bdstatic.com/94oJfD_bAAcT8t7mm9GUKT-xh_/timg?image&quality=100&size=b4000_4000&sec=1533799465&di=0f7445fba7d177bfd21b2d71d41531fb&src=http://pic28.photophoto.cn/20130717/0010023915569244_b.jpg')">点我啊</div><div onclick="downloadUrl('https://ss0.bdstatic.com/94oJfD_bAAcT8t7mm9GUKT-xh_/timg?image&quality=100&size=b4000_4000&sec=1533799465&di=0f7445fba7d177bfd21b2d71d41531fb&src=http://pic28.photophoto.cn/20130717/0010023915569244_b.jpg')">点我啊</div>
<script>
function funDownload(content, filename) {
// 创建隐藏的可下载链接
var eleLink = document.createElement('a');
eleLink.download = filename;
eleLink.style.display = 'none';
// 字符内容转变成blob地址
var blob = new Blob([content]);
eleLink.href = URL.createObjectURL(blob);
// 触发点击
document.body.appendChild(eleLink);
eleLink.click();
// 然后移除
document.body.removeChild(eleLink);
}; function download(name,href) {
var $a = document.createElement('a');
$a.setAttribute("href", href);
$a.setAttribute("download",name);
var evObj = document.createEvent('MouseEvents');
evObj.initMouseEvent( 'click', true, true, window, 0, 0, 0, 0, 0, false, false, true, false, 0, null);
$a.dispatchEvent(evObj);
} function downloadUrl(src){
var $a = document.createElement('a');
$a.setAttribute("href", src);
$a.setAttribute("download", "");
var evObj = document.createEvent('MouseEvents');
evObj.initMouseEvent( 'click', true, true, window, 0, 0, 0, 0, 0, false, false, true, false, 0, null);
$a.dispatchEvent(evObj);
}
</script>
</body>
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