强制浏览器在点击下载图像文件 [英] Force browser to download image files on click
问题描述
有没有一种方法可以使用客户端编程来实现这一点？
我需要浏览器下载图像文件，就像它在点击Excel表单时一样。只有？
< html xmlns =http://www.w3.org/1999/xhtml>
< head>
< title>< / title>
< script type =text / javascriptsrc =Scripts / jquery-1.10.2.js>
$（document）.ready（function（）{
$（*）。click（function（）{
$（p）。hide（）;
}）;
}）;
< / script>
< / head>
< script type =text / javascript>
document.onclick = function（e）{
e = e || window.event;
var element = e.target || e.srcElement;
if（element.innerHTML ==Image）{
//someFunction（element.href）;
var name = element.nameProp;
var address = element.href;
saveImageAs1（element.nameProp，element.href）;
返回false; //防止默认动作并停止事件传播
}
else
return true;
};
$ b $ function saveImageAs1（name，adress）{
if（confirm（'you want to save this image？'））{
window.win = open（adress）;
//response.redirect(\"~/testpage.html）;
setTimeout（'win.document.execCommand（SaveAs）'，100）;
setTimeout（'win.close（）'，500）;
}
}
< / script>
< body>
< form id =form1runat =server>
< div>
< p>
< a href =http：// localhost：55298 / SaveImage / demo / Sample2.xlsxtarget =_ blank> Excel< / a>< br />
< a href =http：// localhost：55298 / SaveImage / demo / abc.jpgid =abc>图片< / a>
< / p>
< / div>
< / form>
< / body>
< / html>
如何下载Excel表格（浏览器）？
使用HTML5，您可以将属性'download'添加到您的链接中。
< a href =/ path / to / image.png下载>
下载具有相同文件名的图像（在这个例子中为image.png）。
如果你为这个属性指定一个值，那么它将成为新的文件名：
< a href =/ path / to / image.pngdownload =AwesomeImage.png> 更新：截至2018年春天，对于跨源取值即可。因此，如果您想在imgur.com以外的域名上创建< a href =https://i.imgur.com/IskAzqA.jpg下载> 将无法按预期工作。 Chrome的弃用和移除公告
I need the browser to download the image files just as it does while clicking on an Excel sheet.
Is there a way to do this using client-side programming only?
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript" src="Scripts/jquery-1.10.2.js">
$(document).ready(function () {
$("*").click(function () {
$("p").hide();
});
});
</script>
</head>
<script type="text/javascript">
document.onclick = function (e) {
e = e || window.event;
var element = e.target || e.srcElement;
if (element.innerHTML == "Image") {
//someFunction(element.href);
var name = element.nameProp;
var address = element.href;
saveImageAs1(element.nameProp, element.href);
return false; // Prevent default action and stop event propagation
}
else
return true;
};
function saveImageAs1(name, adress) {
if (confirm('you wanna save this image?')) {
window.win = open(adress);
//response.redirect("~/testpage.html");
setTimeout('win.document.execCommand("SaveAs")', 100);
setTimeout('win.close()', 500);
}
}
</script>
<body>
<form id="form1" runat="server">
<div>
<p>
<a href="http://localhost:55298/SaveImage/demo/Sample2.xlsx" target="_blank">Excel</a><br />
<a href="http://localhost:55298/SaveImage/demo/abc.jpg" id="abc">Image</a>
</p>
</div>
</form>
</body>
</html>
How should it work in case of downloading an Excel sheet (what browsers do)?
Using HTML5 you can add the attribute 'download' to your links.
<a href="/path/to/image.png" download>
Compliant browsers will then prompt to download the image with the same file name (in this example image.png).
If you specify a value for this attribute, then that will become the new filename:
<a href="/path/to/image.png" download="AwesomeImage.png">
UPDATE: As of spring 2018 this is no longer possible for cross-origin hrefs. So if you want to create <a href="https://i.imgur.com/IskAzqA.jpg" download> on a domain other than imgur.com it will not work as intended. Chrome deprecations and removals announcement
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