Basic Rules: all ok;

DMG: "Unusual Encounters";

MM: "Dragon, Shadow", "Elves: Drow", "Succubus/Incubus",  "Will-o’-wisp", "Yetis";

PHB: all ok;

SCAG: "A Brief History", "Half-Elves", "Half-Orcs";

VGtM: "Cranium Rat", "Firenewt", "Firenewt Warlock of Imix", "Giant Strider", "Grung", "Grung Elite Warrior", "Grung Wildling", "Ki-Rin", "Rothé (Cow)", "Swarm of Cranium Rats", "Thorny",  all the "Yuan-Ti";

XGtE: all ok.

CoS: all ok;

HotDQ: all ok;

LMoP: "Experience Point Rewards";

OoTA: "The Silken Path";

PotA: "The Plunging Torrent";

RoT: "Neronvain", "Varram the White";

SKT: 

• Introduction :"Roll of Years";
• ch. 1: both "General Features";
• ch. 2: "Special NPCs";
• ch. 3: "Orcs and Half-Orcs", "Bargewright Inn", "Nesmé", "Way Inn";
• ch. 4: "Journey to the Eye", "Eye of the All-Father", "General Features", "Airship of a Cult", "Encounter with Iymrith";
• ch. 5: "General Features";
• ch. 6: "General Features";
• ch. 7: "General Features";
• ch. 9: "General Features";
• ch. 10: "General Features";
• ch. 11: "Back to Maelstrom?";
• ch. 12: "General Features";
• appendix c: "Tribal Spells".

TftYP: ch. 1 "Running the Adventure";

ToA: all ok.

(function () {
    const isTftYP = false; // change to true when testing Tales from the Yawning Portal
    const baseUrlArray = [];
    $(`a[href^='${window.location.href}']`).each((idx, el) => {
        const sufix = el.href.replace(window.location.href, "");
        if (sufix.split("/").length === isTftYP ? 3 : 2 && sufix.indexOf("#") === -1) baseUrlArray.push(el.href);
    });

    const innerSearchMislinks = baseUrl => {
        const url = baseUrl + "#";
        const toTest = [];
        $(`a[href^='${url}']`).each((idx, el) => {
            toTest.push({
                id: el.href.replace(url, ""),
                label: el.textContent
            });
        });

        $.get(baseUrl, (response) => {
            console.log("response for - " + baseUrl);
            const html = $.parseHTML(response);
            const errors = [];

            toTest.forEach(entry => {
                try {
                    if ($(html).find("#" + entry.id).length === 0) errors.push(entry);
                } catch (e) {
                    errors.push(entry);
                }

            });

            console.log("error number: " + errors.length);
            errors.forEach(e => console.log(e.label));
        });
    };

    baseUrlArray.forEach(innerSearchMislinks);
})();