Board Thread:Support Requests - Getting Technical/@comment-38069261-20190109050118/@comment-27958705-20190109073446

the best place to start from it is a start. u need at least basic knowledge about js. u can use google to find guides. also, u most likely will need to learn something about html, in order to create sane input interface. it will allow to create ur own calculator. then, u will need to learn how to use js on fandom: Help:Community_CSS_and_JS.

or u can skip most of those boring things and ask someone on dev wiki to create the script.

most simple thing would be like that: html: js: !function { var $in = $(' ', {type: 'text'}), $do = $(' ', {type: 'button', value: 'do'}), $wrap = $(' ', {class: '.mycalc-wrap'}); $wrap.append([$in, $do]); $('.mycalc').append($wrap); function doe(what) { alert(eval(what)); }   $in.on('keydown', function(e) {        if (e.which === 13) doe($in.val);    }); $do.on('click', function(e) {       doe($in.val);    }); };