Force download file javascript

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. Then we also created a download button to facilitate downloading files. This approach will create text data on the fly and then use JavaScript to create a text file and then download it.

Attach an event listener looking for a click to a download button. In this approach, we will use the Axios library to download files. Blob stands for Binary Large Object and is a data type that can store binary data. This method is not restricted to the plain text entered by the user like the previous method. Hey geek! The constant emerging technologies in the world of web development always keeps the excitement for this subject through the roof.

But before you tackle the big projects, we suggest you start by learning the basics. Now at it's lowest price ever! Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment? Please use ide. Load Comments. What's New. 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. Learn easily by using our HTML5 canvas examples.