In this section, we will examine how we can download programmatically generate content in the browser, leveraging all we have learned from the beginning of the article and what we already know about blobs and object URLs. The logic of our helper function can be broken down as follows:.
Here is what an implementation of this helper function will look like:. That was a pretty straightforward implementation of the download link helper function.
Notice that the helper triggers a one-off automatic download of the blob content whenever it is called. Also notice that the helper function takes a filename as its second argument, which is very useful for setting the default filename for the downloaded file.
Now that we have our download helper function in place, we can revisit our previous examples and modify them to trigger a download for the generated content. Here we go. We will update the final promise. Here we have updated the final promise. Here is a working and more advanced example of this application on Codepen :. We will add some code to the end of the load event listener of the img object, to allow us:.
Here is a working example of this application on Codepen :. While there could be a lot to pick from this tutorial, it is glaring that Web APIs have a lot to offer as regards building powerful apps for the browser. Thanks for making out time to read this article. Great article! Thanks for the article! Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 8 years, 6 months ago. Active 10 months ago.
Viewed 19k times. Add a comment. Active Oldest Votes. WinHttp COM library. In order to achieve this you can also add the Interop. WinHttp reference to your project link. It is likely that people who use these browsers would likely rather view the document rather than saving it to their phone. New to HTML 5. This markup is easier to understand and is supported by all modern browsers, but may not be supported by all content management systems.
If for whatever reason, you cannot add the download attribute in the case that you cannot directly edit the HTML of your web page , you can optionally compress the file using zip, and instruct the user to download the zip file. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated. When you download a file, Internet Explorer checks for clues that the download is malicious or potentially harmful to your PC.
If Internet Explorer identifies a download as suspicious, you'll be notified so you can decide whether or not to save, run, or open the file. Not all files you're warned about are malicious, but it's important to make sure you trust the site you're downloading from, and that you really want to download the file.
If you see a security warning that tells you the publisher of this program couldn't be verified, this means that Internet Explorer doesn't recognize the site or organization asking you to download the file. Make sure you recognize and trust the publisher before you save or open the download. There are always risks to downloading files from the web. Here are some precautions you can take to help protect your PC when you download files:.
If the file has a digital signature, make sure that the signature is valid and the file is from a trusted location. To see the digital signature, select the publisher link in the security warning dialog box that opens when you first download the file. Windows 10 Internet Explorer Windows 8.
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