Calling Math Editor

Question

Is there is a library for invoking math symbols/formula(not sure what to call), which are design specifically to be added in a websites called maybe in html, php or javascri

Answer 1

It's not a library, except in the loosest sense, but if you happen to mean mathematical symbols for webpages (which can be combined to create formulae) you could start with the World Wide Web Consortium's Character entity references for HTML 4

It's not clear what you meant when you referred to the 'button bar above.'