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js下载文件

时间:2017-10-19 10:59:47      阅读:296      评论:0      收藏:0      [点我收藏+]
window.downloadFile = function (sUrl) {
 
//iOS devices do not support downloading. We have to inform user about this.
if (/(iP)/g.test(navigator.userAgent)) {
alert(‘Your device does not support files downloading. Please try again in desktop browser.‘);
return false;
}
 
//If in Chrome or Safari - download via virtual link click
if (window.downloadFile.isChrome || window.downloadFile.isSafari) {
//Creating new link node.
var link = document.createElement(‘a‘);
link.href = sUrl;
 
if (link.download !== undefined) {
//Set HTML5 download attribute. This will prevent file from opening if supported.
var fileName = sUrl.substring(sUrl.lastIndexOf(‘/‘) + 1, sUrl.length);
link.download = fileName;
}
 
//Dispatching click event.
if (document.createEvent) {
var e = document.createEvent(‘MouseEvents‘);
e.initEvent(‘click‘, true, true);
link.dispatchEvent(e);
return true;
}
}
 
// Force file download (whether supported by server).
if (sUrl.indexOf(‘?‘) === -1) {
sUrl += ‘?download‘;
}
 
window.open(sUrl, ‘_self‘);
return true;
}
 
window.downloadFile.isChrome = navigator.userAgent.toLowerCase().indexOf(‘chrome‘) > -1;
window.downloadFile.isSafari = navigator.userAgent.toLowerCase().indexOf(‘safari‘) > -1;

js下载文件

原文:http://www.cnblogs.com/zhangshuda/p/7691262.html

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