我应该由服务器生成一些代码:
table {
max-width: 100%;
background-color: transparent;
text-align:center;
}
th {
text-align: center;
}
.table {
width: 100%;
margin-bottom: 20px;
}
适用于当前的chrome,firefox,opera。我希望它支持MSIE11。 Afaik <a download="test.csv" href="data:text/plain;charset=utf-8;base64,w4FydsOtenTFsXLFkXTDvGvDtnJmw7p0w7Nnw6lwLg==">
teszt
</a>
就是解决方案。是否有我可以使用的现有js polyfill,或者我应该写它?
答案 0 :(得分:1)
好的,我根据我在SO答案和here中找到的代码制作了一个简单的polyfill。我在MSIE11上测试它,它的工作原理。它不支持使用XHR
进行文件下载,只支持数据URI。如果您想强制下载文件,我建议使用Content-Disposition
响应标头。在我的情况下,服务器只是创建文件,但不应该存储它,我也需要HTML响应,所以这是要走的路。另一种解决方案是通过电子邮件发送文件,但我发现小文件更好。
(function (){
addEvent(window, "load", function (){
if (isInternetExplorer())
polyfillDataUriDownload();
});
function polyfillDataUriDownload(){
var links = document.querySelectorAll('a[download], area[download]');
for (var index = 0, length = links.length; index<length; ++index) {
(function (link){
var dataUri = link.getAttribute("href");
var fileName = link.getAttribute("download");
if (dataUri.slice(0,5) != "data:")
throw new Error("The XHR part is not implemented here.");
addEvent(link, "click", function (event){
cancelEvent(event);
try {
var dataBlob = dataUriToBlob(dataUri);
forceBlobDownload(dataBlob, fileName);
} catch (e) {
alert(e)
}
});
})(links[index]);
}
}
function forceBlobDownload(dataBlob, fileName){
window.navigator.msSaveBlob(dataBlob, fileName);
}
function dataUriToBlob(dataUri) {
if (!(/base64/).test(dataUri))
throw new Error("Supports only base64 encoding.");
var parts = dataUri.split(/[:;,]/),
type = parts[1],
binData = atob(parts.pop()),
mx = binData.length,
uiArr = new Uint8Array(mx);
for(var i = 0; i<mx; ++i)
uiArr[i] = binData.charCodeAt(i);
return new Blob([uiArr], {type: type});
}
function addEvent(subject, type, listener){
if (window.addEventListener)
subject.addEventListener(type, listener, false);
else if (window.attachEvent)
subject.attachEvent("on" + type, listener);
}
function cancelEvent(event){
if (event.preventDefault)
event.preventDefault();
else
event.returnValue = false;
}
function isInternetExplorer(){
return /*@cc_on!@*/false || !!document.documentMode;
}
})();