Is it true that Javascript does not allow for saving or outputting actions?

After coming across this question, I discovered a way to extract a specific element from a Google translate page using Javascript. However, I also learned that it is nearly impossible to directly save something to the clipboard in Javascript without user interaction, which was disappointing as I needed to automate saving elements from a Google translate page.

This led me to wonder if there is a way to save information in a separate file on my computer using Javascript. In the w3schools.com tutorial on Javascript, it mentions that "JavaScript does not have any print or output functions". Does this mean that saving data locally on my computer is completely out of reach with Javascript?

javascriptsaveoutput

Answer №1

If you need to save some text, here's a piece of code that can help:

// Let's say the text you want to save is stored in a variable called 'contentVar'
uriContent = "data:application/octet-stream," + encodeURIComponent(contentVar);
window.location.href = uriContent;

After running this code, your browser will start downloading a file with the content from contentVar.

One drawback is that you won't be able to set the file name easily. It can be quite challenging to do it across different browsers, but worry not, there's a handy library for that! Check out FileSaver.js

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