House design software for macbook pro. Generate and download a file using Javascript ? If you think about it, this isn't so secure as you think and shouldn't be allowed without the user interaction (however now is allowed).
Imagine that you use Google Chrome and you have enabled the option 'Auto-open downloaded files', and for your bad luck you enter in a malicious website and it generates the download of an unknown file. You know how this story ends.
Meteor is a leading open source isomorphic Javascript framework designed to build scalable web, mobile and desktop apps quickly and efficiently. Ship more with less code, build apps for any device and integrate with technologies you already use with Meteor. In this article we are going to show you a couple of tricks to generate and download directly a file using pure Javascript. Self-implemented download function. The following simple function allow you to generate a download of a file directly in the browser without contact any server.
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However, in the latest browsers unknow or rare downloaded file extensions are blocked and a prompt appears if you really want to open that file (at less in Chrome).
Therefore, the automatic download of file has been difficult to achieve in the latest years, but now with the introduction of HTML5, this task has become easier to achieve.
In this article we are going to show you a couple of tricks to generate and download directly a file using pure Javascript.
Self-implemented download function
The following simple function allow you to generate a download of a file directly in the browser without contact any server. It works on all HTML5 Ready browsers as it uses the download attribute of the element:
You can see this snippet in action in the following fiddle:
Using a library
The following table shows the compatibility of FileSaver.js in different browsers:
Browser | Constructs as | Filenames | Max Blob Size | Dependencies |
---|---|---|---|---|
Firefox 20+ | Blob | Yes | 800 MiB | None |
Firefox < 20 | data: URI | No | n/a | Blob.js |
Chrome | Blob | Yes | 500 MiB | None |
Chrome for Android | Blob | Yes | 500 MiB | None |
Edge | Blob | Yes | ? | None |
IE 10+ | Blob | Yes | 600 MiB | None |
Opera 15+ | Blob | Yes | 500 MiB | None |
Opera < 15 | data: URI | No | n/a | Blob.js |
Safari 6.1+* | Blob | No | ? | None |
Safari < 6 | data: URI | No | n/a | Blob.js |
Note: although it supports the most recent browsers, there are a couple of trick that you need to know to provide full support. Macbook air a1237 os support.
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IE < 10
It is possible to save text files in IE < 10 without Flash-based polyfills. See ChenWenBrian and koffsyrup's saveTextAs()
for more details.
Safari 6.1+
Blobs may be opened instead of saved sometimes—you may have to direct your Safari users to manually press ?+S to save the file after it is opened. Using the application/octet-stream
MIME type to force downloads can cause issues in Safari. Blu ray playback software mac.
iOS
saveAs must be run within a user interaction event such as onTouchDown or onClick; setTimeout will prevent saveAs from triggering. Due to restrictions in iOS saveAs opens in a new window instead of downloading, if you want this fixed please tell Apple how this bug is affecting you.
Have fun !