We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多

Is there way to check in javascript code if built in PDF.js viewer is disabled

more options

To restore functionality of my site I want to ask user to disable built in PDF.js viewer. To determine if Adobe acrobat reader plug-in is enabled i check navigator.mimeTypes["application/pdf"].enabledPlugin property. But this plug-in seems to be enabled independently from the setting described in View PDF files using Firefox’s built-in viewer article. So is there a way to determine in javascript code if 'Preview in Firefox' or 'Use Adobe Acrobat (in Firefox)' values are set.

To restore functionality of my site I want to ask user to disable built in PDF.js viewer. To determine if Adobe acrobat reader plug-in is enabled i check navigator.mimeTypes["application/pdf"].enabledPlugin property. But this plug-in seems to be enabled independently from the setting described in [[View PDF files in Firefox without downloading them]] article. So is there a way to determine in javascript code if 'Preview in Firefox' or 'Use Adobe Acrobat (in Firefox)' values are set.

由 aerworker 於 修改

所有回覆 (3)

more options

A possibility might be to check the navigator.plugins array and search for the Adobe Reader plugin.
The PDF Viewer (pdfjs) doesn't seem to show there.

more options

I've filed to determine difference by the window.navigator.plugins property too.

more options

cor-el, the more your answers I found the more i'm confident you do not think about the problem described. It's sad, that mozila pay more attention on new mobile os, than on old user problems. Chrome will bite you for sure