Download File from URL. There are a couple ways to do this. As mentioned, using the developer tools could work (more likely it will give you the url to the file) and right-clicking the link will work. Hi I had issue with download file with file extension,I have searched in Google but i got jayway blog,then I just made little customized,the data/file Content coming from a URI or a Rest service. Details as below.
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Better approach to download file in JavaScript
Download file in JavaScript – what can be easier? However there are some pitfalls and there is room for improvements. This article describes how to create the best download function in JavaScript and why it`s so good.
If you don`t like to dive deep into theory – you can just get library from GitHub and use downloadFile global function in your project.
Generally there are two file downloading techniques in HTML/JS: window.open and mouse click / tap on link. Both of this methods are not ideal. During investigation of the question some interesting solutions were found. Together they seems to be perfect solution for JavaScript files downloading.
Let`s start development from declaring simple function based on window.open method:
This function is simple and works everywhere, but have some disadvantages:
- We`ll get useless empty window in Chrome or Safari;
- Probably file`s content-type will command browser to show file`s content in new window and not to download it. It`s not expected behavior for downloading function.
How can we avoid this?
“_self” argument for window.open
We can avoid annoying new window opening by adding second argument to window.open:
Virtual link and virtual click
Click on link method also have not such problem as empty window in Chrome or Safari. Bad thing is that it`s user-generated event. However we can create hidden link and programmatically click on it by dispatching new mouse event.
Let`s add virtual click code for Chrome and Safari without explanation of browser detection part:
HTML5 “download” attribute and content-type ignoring
What else can annoy user? For example if he tries to download HTML or PNG file and it will be opened in new browser window. I don`t like this behavior, really. And it can be avoided by using HTML5 download attribute. This attribute will tell browser that virtual link we created is aimed for download only. It will download file from link`s href to file with name specified as download attribute`s value. Sad that this great feature works in Chrome only, but 35% of happy users are serious reason to add 5 more lines of code.
Complete listing for download.js:
![Javascript download file from url ajax Javascript download file from url ajax](https://pldzimages.s3.amazonaws.com/products/2600785_detail.png)
Download and extract files
See download-cli for the command-line version.
Install
Usage
API
Javascript Download File From Url Change Filename
download(url, [destination], [options])
Returns both a Promise<Buffer>
and a Duplex stream with additional events.
url
Type: string
URL to download.
destination
Javascript Download File From Url Ie11
Type: string
Path to where your file will be written.
options
Type: Object
How To Download File From Url
Same options as got
and decompress
in addition to the ones below.
extract
Type: boolean
Default: false
If set to true
, try extracting the file using decompress
.
filename
Type: string
Name of the saved file.
proxy
Type: string
Proxy endpoint.
License
MIT © Kevin Mårtensson
Keywords
install
npm i download
weekly downloads
version
7.1.0