Northstar MLS comment box and cost per sq ft additions. Only works on page load, gotta go in through main page for diff searches. EMOJIS WORK!!

gistfile1.js

// ==UserScript==
// @name        mls additions
// @namespace   nsmls
// @include     http://matrix.northstarmls.com/*
// @version     1
// @grant       none
// @require https://code.jquery.com/jquery-2.1.4.min.js
// @require     https://cdn.firebase.com/js/client/2.2.3/firebase.js
// ==/UserScript==

var rows = $('.singleLineDisplay');

//draw the textboxes
for (var i = 0; i < rows.length; i++) {
    var row = $(rows[i]);
    var textbox = document.createElement('input');
    textbox.type = "text";
    var mlsID = $(".d1839m8", row)[0].innerText;
    textbox.setAttribute("id", "m_" + mlsID);
    textbox.setAttribute("class", "commentText");
    textbox.setAttribute("style", "width:600px; margin-left: 20px; margin-bottom: 10px;");
    row[0].append(textbox);

    var costTxt = document.createElement('p');
    costTxt.setAttribute("id", "m_txt_" + mlsID);
    costTxt.setAttribute("class", "costText");
    costTxt.setAttribute("style", "display:inline; margin-left: 5px;");

    var cost = parseInt(($(".d1839m17", row)[0].innerText).replace(/[^0-9]/g,''));
    var sqft = parseInt(($(".d1839m22", row)[0].innerText).replace(/[^0-9]/g,''));
    var costPerSqFt = (cost / sqft).toFixed(2);
    costTxt.innerHTML = "$" + costPerSqFt + " / sqft";
    row[0].append(costTxt);
}

//add values
var mlsEntry = new Firebase('https://fake-database-name.firebaseio.com/');
mlsEntry.on("child_added", function(snap) {
    $("#m_" + snap.key()).val(snap.val().comments);
});

$(".commentText").keyup(function(e) {
    if(e.keyCode == 13){
        var mlsID = e.currentTarget.id.substring(2);
        mlsEntry.child(mlsID).set({
            "comments" : e.currentTarget.value
        });
    }
});