BL Post ID script

// ==UserScript==
// @name         BL Post ID script
// @namespace    forums.nrvnqsr.com/
// @version      0.2
// @description  Make post numbers visible in the user's info panel without having to do extra clicking and whatnot
// @author       NMR-3
// @match        forums.nrvnqsr.com/*
// @grant        none
// @require      https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js
// ==/UserScript==

window.onload = function(){
    var userinfolist = document.getElementsByClassName('userinfo');
    for(var i = 0; i < userinfolist.length; i++){
        addPostIDForEach(userinfolist[i]);
        userinfolist = document.getElementsByClassName('userinfo');
    }
    var ignoredposts = document.getElementsByClassName('postbitignored');
    for(i = 0; i < ignoredposts.length; i++){
        changeIgnoredPost(ignoredposts[i]);
        ignoredposts = document.getElementsByClassName('postbitignored');
    }
};

function changeIgnoredPost(item){
    removeChildWithClassName(item, 'userinfo');
    removeChildWithClassName(item, 'postcontent');
    removeChildWithClassName(item, 'floatcontainer');
    var list = item.getElementsByClassName('viewpostlink');
    for (let temp of list){
        temp.style.fontSize = "larger";
    }
}

function removeChildWithClassName(item, className){
    var list = item.getElementsByClassName(className);
    for (let temp of list) {
        temp.parentElement.removeChild(temp);
    }
}

function addPostIDForEach(item){
    var postid = item.parentElement.parentElement.id;
    postid = postid.slice(5);

    var dt = document.createElement("dt");
    dt.innerHTML = "Post ID";
    var dd = document.createElement("dd");
    dd.innerHTML = postid;

    var sub = item.getElementsByTagName("dl")[0];
    if(sub != null && sub != undefined){
        sub.appendChild(dt);
        sub.appendChild(dd);
    }
    else {
        item.appendChild(dd);
    }
}