How to download file using javascript

In this article, we will learn how to download files using JavaScript. Automatic downloading files help us retrieve files directly from the URL with a JavaScript function without contacting any servers. We will achieve this using our custom written functions and using the download attribute of HTML 5. The download attribute in HTML 5 is used to download files when users click on the hyperlink. We are required to set the href attribute specifying the source of the file.

The value of the download attribute determines the name of the downloaded file. If this value is removed, then the downloaded filename will be the same as the original file name.

In the above code, we download an image apple. Note: automatic downloads allow you to build a secure download link that prevents users from seeing the file path. You can also encrypt the download link by setting a password and expiry date on it. In the past, popular browsers have made automatic downloads difficult to execute due to safety concerns. This way of making JavaScript download files allows users to retrieve the content provided in the text area.

The file reaches the computer device as a simple. The declared function sets a download attribute where you get to name the file. The encodeURIComponent function then encodes the content. The click method prompts the download process to start as you click the download button. There is another option for downloading files without contacting the server. This time, we are using a JavaScript library called FileSaver. The example below presents the syntax to implement the saveAs FileSaver interface:.

It sets the file to a Blob value. For instance, it is useful for preventing sensitive information from being sent to external servers. It includes but is not limited to multimedia objects , programs , and code snippets. Remember: as Blob has size limitations based on the supported browser, FileSaver. See the table below to check the compatibility of FileSaver. Follow me on Twitter and LinkedIn. You can also subscribe to RSS Feed. I started this blog as a place to share everything I have learned in the last decade.

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Trigger the click event The idea is to programmatically create an anchor link, and then trigger the click event. You might also like