Is it still a good practice to have a Go Back button? [duplicate]

1. Where should back button be placed?
2. Where should back button be on app?
3. What does the browser back button do?
4. What data type should be used to design a back button for the Web browser?

Where should back button be placed?

Place a persistent Back to Top button in the lower right side of the page. This is where people expect to see it. This position is out of the way, but noticeable. When the button is placed in a different place on the screen, it is often ignored.

Where should back button be on app?

Since the top left is pretty standard for most apps, this makes it recognizable for the user and therefore easier to find and use. This position is only difficult to reach for mobile devices. That is why the bottom left would also be possible, but the most important option like a next button is at the bottom.

What does the browser back button do?

To aid in web site navigation, most web browsers store a copy of the web pages you visited recently. A back button in the browser lets you back-up to the copies of pages you visited previously.

What data type should be used to design a back button for the Web browser?

Design the forward and backward buttons of a Browser using Stack Data Structure.