问题描述
在基于PHP的网站上，我们希望在用户填写一个简短的表单后，向用户发送一个下载包。网站启动的下载应该类似于download.com这样的网站，它们说你的下载将在一会儿开始。
On a PHP-based web site, I want to send users a download package after they have filled out a short form. The site-initiated download should be similar to sites like download.com, which say "your download will begin in a moment."
几种可能的方法我知道和浏览器兼容性（基于快速测试）：
A couple of possible approaches I know about, and browser compatibility (based on a quick test):
1）执行 window.open 指向新文件。
1) Do a window.open pointing to the new file.
- FireFox 3 blocks this.
- IE6 blocks this.
- IE7 blocks this.
2）创建一个指向新文件的iframe
- FireFox 3 seems to think this is OK. (Maybe it's because I already accepted it once?)
- IE6 blocks this.
- IE7 blocks this.
How can I do this so that at least these three browsers will not object?
奖金：是否有一种不需要浏览器条件语句的方法？
Bonus: is there a method that doesn't require browser-conditional statements?
（我相信download.com有条件地使用这两种方法，但是我无法让任何一方工作。）
(I believe that download.com employs both methods conditionally, but I can't get either one to work.)
回应和说明：
Q: "Why not point the current window to the file?"
A: That might work, but in this particular case, I want to show them some other content while their download starts - for example, "would you like to donate to this project?"
更新：我已经放弃了这种方法。
UPDATE: I have abandoned this approach. See my answer below for reasons.
推荐答案
您还可以进行元刷新，大多数浏览器支持。 Download.com将一个放在noscript标签中。
You can also do a meta refresh, which most browsers support. Download.com places one in a noscript tag.
<meta http-equiv="refresh" content="5;url=/download.php?doc=123.zip"/>
这篇关于最好的方式来启动下载？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！