I noticed there were comments under a lot of the answers that said the browser would just try to open the file itself rather than downloading it depending on the file type. I discovered this to be true. This is what finally worked for me since the file to be downloaded was determined when the page is loaded.
If you can't use form, another approach with downloadjs fit nice. Downloadjs use blob and html 5 file API under the hood:. One of the simplest way for button and the text-decoration will help to alter or to remove the text decoration of the link. Another way of doing in case you have a complex URL such as file. The solution I have come up with is that you can use download attribute in anchor tag but it will only work if your html file is on the server. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 9 years, 4 months ago. Active 27 days ago. Viewed 1. Brett DeWoody 53k 27 27 gold badges silver badges bronze badges. Thanks to you "how to trigger a file download in javascript" would give answers much faster for any future searcher. Your restrictions in your final paragraph don't make much sense to me. If you're open to answers that use JavaScript since you say so or that require changing the DOM structure like the one you've accepted , why not also an anchor styled as a button?
I can't imagine a scenario where the first two would be fine but the anchor as a button would be problematic. Add a comment. Active Oldest Votes. You can trigger a download with the HTML5 download attribute. That means the page and the file must share the same domain, subdomain, protocol HTTP vs. HTTPS , and port if specified.
Exceptions are blob: and data: which always work , and file: which never works. If it is blank, the browser defaults to the file's name. MultiplyByZer0 4, 3 3 gold badges 28 28 silver badges 46 46 bronze badges. Joe Pigott Joe Pigott 7, 5 5 gold badges 29 29 silver badges 42 42 bronze badges. Browsers that understand download treat it as a download, otherwise it's opened in a new tab. How can this be applied to a button object instead of just an a tag?
Actually this only works for urls of the same origin as mentioned in the MDN docs. This is a huge limitation if we are looking to develop a generic solution — Akshat Gupta. The question is explicitly asking to use a button instead of a link — Quentin. Show 9 more comments. Gray k 22 22 gold badges silver badges bronze badges. Cfreak Cfreak In when the answer was originally posted it wasn't supported in any major browser.
This doesn't necessarily trigger a download. It simply causes the browser to navigate to file. Whether that results in file. Show 3 more comments. Ani Menon What if i wanna download a xml file? Thanks for your code. I have tested, it can working in IE, Chrome, Firefox.
If you have a file acceptable by the browser like a PDF it will open in new tab instead to show download dialog. You could use window. Show 1 more comment. Stefanos Chrs Stefanos Chrs 1, 2 2 gold badges 14 14 silver badges 44 44 bronze badges. NicholasKyriakides Kind of reminds me of this gem: image. BryanLarsen You are right, Firefox doesn't allow this without adding the element to body first. Thank you, updating the answer — Stefanos Chrs.
Is there a way that javascript function be triggered once the download finishes? Just trying to show a message once downloads start and remove the message once download completes. This is best solution out here and should be accepted answer.
Show 6 more comments. Mark Amery k 65 65 gold badges silver badges bronze badges. Matt Ball Matt Ball k 95 95 gold badges silver badges bronze badges. Perfect, thanks. Do you happen to know if most servers will set the Content-Disposition to 'attachment' by default? There is no "most. Don't rely on it being set. This issue has been driving me ballistic, and this was the only option that worked and is supported by IE.
No jquery. This doest work if you're trying to download an image, it would open the image in the browser — Dheeraj. Danubian Sailor Danubian Sailor It does, at least if you actually apprnf the iframe to document. This doesn't seem to be working in Chrome right now, although it used to work. I wonder if it kind of intermittently stops working in different versions of Chrome. Works in Chrome as of Version Does not work with images in Firefox v It just renders the image in the iframe.
This will fail silently if the file is of a type the browser knows how to render itself, though unless the server returns a Content-Disposition header indicating the file should be downloaded.
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