Displays a tooltip with precise number when hovering over all numbers in Trimps. Warning: the numbers rendered before the plugin is loaded won't register the tooltip handlers, so for example HPs before you fight might not react.

Trimps plugin: Precise number on hover

// ==UserScript==
// @name         Trimps precise number hover
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Displays a tooltip with precise number when hovering over all numbers in Trimps. Warning: the numbers rendered before the plugin is loaded won't register the tooltip handlers, so for example HPs before you fight might not react.
// @author       Maurycy Zarzycki, Retrocade.net
// @match        https://trimps.github.io/
// @require http://code.jquery.com/jquery-latest.js
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var mouseX = 0;
    var mouseY = 0;
    var $tooltip = $('<div class="number-tooltip"></div>').appendTo('body');
    $('<style>.number-tooltip{position: absolute; display: none; background: black; padding: 10px; color: white;}</style>').appendTo('head');

    $(document).mousemove(function(event) {
        mouseX = event.pageX;
        mouseY = event.pageY;
    });

    function number_format (number, decimals, decPoint, thousandsSep) {
        // Taken from: http://locutus.io/php/strings/number_format/
        number = (number + '').replace(/[^0-9+\-Ee.]/g, '');
        var n = !isFinite(+number) ? 0 : +number;
        var prec = !isFinite(+decimals) ? 0 : Math.abs(decimals);
        var sep = (typeof thousandsSep === 'undefined') ? ',' : thousandsSep;
        var dec = (typeof decPoint === 'undefined') ? '.' : decPoint;
        var s = '';

        var toFixedFix = function (n, prec) {
            var k = Math.pow(10, prec);
            return '' + (Math.round(n * k) / k)
                .toFixed(prec);
        };

        // @todo: for IE parseFloat(0.55).toFixed(0) = 0;
        s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');
        if (s[0].length > 3) {
            s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
        }
        if ((s[1] || '').length < prec) {
            s[1] = s[1] || '';
            s[1] += new Array(prec - s[1].length + 1).join('0');
        }

        return s.join(dec);
    }

    var prettify_old = window.prettify;
    window.prettify = function(n, d){
        var prettyNumber = number_format(n, 2, ".", " ");
        return '<span onmouseout="numberTooltipOut()" onmousemove="numberTooltipHover(\'' +prettyNumber+ '\')">'+prettify_old(n, d)+'</span>';
    };

    window.numberTooltipHover = function(number){
        $tooltip.text(number).show();
        $tooltip.css('left', mouseX + 10);
        $tooltip.css('top', mouseY + 10);
    };
    window.numberTooltipOut = function(){
        $tooltip.hide();
    };
})();