<output>
All Tags not showing in online page, but show on view source.
<form oninput="x.value=parseInt(first.value)+parseInt(sec.value)">
<input type="number" name="first" value="0"> +
<input type="number" name="sec" value="0">=
<output name="x" for="a b"></output>
</form>
Code show like this:
Browser Support
The <output> tag is not supported in Internet Explorer.
What is output tag
output tag used to for output in html form.