Adds IMDB ratings to netflix

netflix.js

var OMDB_APIKEY = "..."
var omdb_searched = new Set()
var omdb_netflix_id_regex = new RegExp("/watch/([0-9]+)")

function omdb_get_key(link) {
    return "omdb" + omdb_netflix_id_regex.exec(link.prop("href"))[1]
}

function omdb_find_cards() {
    jQuery(".meta > .year").each(function() {
        var year = jQuery(this)
        var title_card = year.parents(".title-card")
        var link = title_card.find("a[href^='/watch/']")
        var title = title_card.find(".bob-title")
        if (year.length && title_card.length && link.length && title.length) {
            omdb_fetch_data(
                title_card,
                title.text().trim(),
                omdb_get_key(link)
            )
        }
    })
}

function omdb_fetch_data(title_card, title, ls_key, fallback) {
    if (!fallback && localStorage[ls_key]) {
        var data = JSON.parse(localStorage[ls_key])
        if (title === data.searched.title && ls_key === data.searched.ls_key) {
            omdb_show_data(title_card, data)
            return
        } else {
            console.log("TITLE", title, "DATA SEARCHED TITLE", data.searched.title)
            console.log("LS KEY", ls_key, "DATA SEARCHED LS_KEY", data.searched.ls_key)
        }
    }
    if (!omdb_searched.has(ls_key) || fallback) {
        omdb_searched.add(ls_key)
        var url = "https://www.omdbapi.com/?t=" + title + "&apikey=" + OMDB_APIKEY
        if (!fallback) url += "&y=" + title_card.find(".year").text()
        jQuery.get(url, function(omdb_data) {
            data = {
                "omdb": omdb_data,
                "searched": {
                    "date": Date.now(),
                    "title": title,
                    "ls_key": ls_key,
                }
            }
            if (data.omdb.Error === "Movie not found!") {
                if (!fallback) omdb_fetch_data(title_card, title, ls_key, true)
                else {
                    localStorage[ls_key] = JSON.stringify(data)
                    console.log("Couldn't find", title)
                }
            } else {
                localStorage[ls_key] = JSON.stringify(data)
                omdb_show_data(title_card, data)
            }
        })
    }
}

function omdb_show_data(title_card, data) {
    title_card.find(".TvObtuseIo, .match-score").remove()
    title_card.prepend("<a target='_blank' href='https://www.imdb.com/title/" + data.omdb.imdbID + "' class='TvObtuseIo' data-rating='" + Math.floor(data.omdb.imdbRating) + "'>" + (data.omdb.imdbRating || "?") + "</a>")
}


function omdb_mark_prefetched() {
    jQuery("a[href^='/watch/']").each(function() {
        var link = jQuery(this)
        var title_card = link.parents(".title-card")
        var ls_key = omdb_get_key(link)
        if (localStorage[ls_key]) {
            omdb_show_data(title_card, JSON.parse(localStorage[ls_key]))
        }
    })
}


var jq = document.createElement('script')
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"
document.getElementsByTagName('head')[0].appendChild(jq)
setTimeout(function() {
    jQuery.noConflict()
    jQuery("head").append(
        "<style type='text/css'>"
        + " .TvObtuseIo { background: yellow; color: black; font-weight: bold; border-radius: 5px; padding: 0.5em; position: absolute; top: 0; right: 0; z-index: 1000; }"
        + " .TvObtuseIo[data-rating='9'] { background: hsl(150, 50%, 50%); }"
        + " .TvObtuseIo[data-rating='8'] { background: hsl(120, 50%, 50%); }"
        + " .TvObtuseIo[data-rating='7'] { background: hsl(90, 50%, 50%); }"
        + " .TvObtuseIo[data-rating='6'] { background: hsl(60, 50%, 50%); }"
        + " .TvObtuseIo[data-rating='5'] { background: hsl(30, 50%, 50%); }"
        + " .TvObtuseIo[data-rating='4'] { background: hsl(0, 50%, 50%); }"
        + "</style>"
    )
    omdb_mark_prefetched()
    setInterval(omdb_find_cards, 500)
}, 500)

Not happy with this setInterval approach, but I can't seem to attach to the right event. This works fine for now.