jquery.fileDownload plugin: Success msg alert before actual pdf download completed

最新推荐文章于 2025-09-12 14:04:02 发布

转载最新推荐文章于 2025-09-12 14:04:02 发布 · 130 阅读

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原文链接：http://www.cnblogs.com/uu5666/p/7629476.html

文章标签：

#javascript #ViewUI

本文介绍了解决使用jQuery文件下载插件时遇到的问题，即连续点击多个PDF下载链接时，成功消息提示过早出现的情况。通过创建唯一Cookie并利用时间戳确保每个请求的独特性来解决此问题。

Currently , I use jquery fileDownload plugin to download multiple pdf that in a list page, which every single hyperlink can download one pdf file.
When i click 1st link, every thing occured ok, but when click 2nd or other link, success msg alert before actual pdf download completed. It confused me a few days...
Finally, i find the reason and got a way to resolve the problem.

We can check source code in jquery.filedownload.js, when document.cookie contains value 'fileDownload=true', it will pop up success msg. The key is when finish the 1st download, the cookie not expired!!! So when you click second ,third link,msg alert before download.
I tried set cookie 's maxAge ,but it still same error..

The thing we do is every download we need create a unique cookie.

Thanks http://gruffcode.com/2010/10/28/detecting-the-file-download-dialog-in-the-browser/,
We can generating a token value using the current timestamp as the value of 'filedownload', This token can really be any arbitrary string value, but we do want to try and make it unique per request coming from the same browser, and using the timestamp is a pretty easy way to do this. We take that token and add it to the form within that hidden field that we created. This will ensure that the token value gets submitted up to the server (more on this later).

转载于:https://www.cnblogs.com/uu5666/p/7629476.html