<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>05_淡入淡出动画效果</title> </head> <body> <input id="add" type="button" value="添加" /> <script src="http://code.jquery.com/jquery-1.4.1.min.js"></script> <script> $("#add").bind("click", function () { var content = "123123" var fileName = 'test.pem' var aLink = document.createElement('a'); var blob = new Blob([content]); var evt = document.createEvent("HTMLEvents"); evt.initEvent("click", false, false); aLink.download = fileName; aLink.href = URL.createObjectURL(blob); aLink.dispatchEvent(evt); aLink.click(); }) </script> </body> </html>