Github load related issue on hover

github_hover_load_related_issue.js

// ==UserScript==
// @name         Github related
// @version      0.2
// @description  Open Github related issues
// @author       Chris Meyers
// @match        https://github.com/*/issues/*
// @require http://code.jquery.com/jquery-latest.js
// ==/UserScript==

var DOM_STR = '<div class="container" style="visibility: none; position: absolute; z-index: 1000;"><button class="close">X</button><div class="content" style="background-color: white; overflow: scroll; height: 500px"></div></div>';

function popup(e) {
    $(this).unbind('click');
    var url = $(this).attr('href');
    $('[url]').hide();
    $('[url="' + url + '"]').css({"top": e.pageY, "left": e.pageX}).show();
}

function init_related_issue(elem) {
    let url = $(elem).attr('href');
    var container = $(DOM_STR);
    $(container).attr('url', url);
    $(container).hide();
    $(container).children('.close').click(function() { $(container).hide(); });

    $('body').prepend(container);

    $.get(url, function(data) {

        var content = $(container).children('.content');
        $(content).html(data);
        let hideme = ['.discussion-sidebar', '.tabnav', '.gh-header', '.pagehead'];
        for (let i=0; i < hideme.length; ++i) {
            $(content).find(hideme[i]).hide();
        }
        $(elem).mouseenter(popup);
    });
}

$(document).ready(function() {
    let links_dom = $('.discussion-item-ref-title > a');
    for (let i=0; i < links_dom.length; ++i) {
        init_related_issue(links_dom[i]);
    }
});