Attach gif ,how can i attach gif in html page i am using <video> but it is not working

how can i attach gif in html page i am using but it is not working

</video>

use img tag and in src put gif name

thanks
autoplay in not working in html webpage

try using loop attribute

loop work when we first start the video and autoplay work when we open webpage it start playing video automatically. loop is working in my case but autoplay is not working

you are trying autoplay for gif or video. Which one?
as for video you can use video tag with autoplay attribute and GIF should start playing automatically when webpage is opened

video and for audio not for gif

so for video use video tag with autoplay property, if it is still not working send the repo link here
I will try it at my end

what is difference between substr and substring

substr takes two input, one is start index and the second one is length
substring also takes two inputs, but both index (start and end index)