Delete all entries inside a list category in MAL. Useful for getting a fresh start in your Plan to Watch or any other section (Completed, On Hold, Dropped, Currently Watching).

[ANIME]MyAnimeList-DeleteAllEntry-ClassicListStyle.js

var index = 0;
if (confirm(`Are you sure you want to DELETE ALL your entries in this section?`)) {
    $("a.animetitle").each(function () {
        var animeLink = $(this).attr("href");
        var animeId = animeLink.substring(
            animeLink.lastIndexOf("anime/") + 6,
            animeLink.lastIndexOf("/")
        );
        var deleteUrl = `/ownlist/anime/${animeId}/delete`;
        setTimeout(function () {
            console.log(`[DELETE] Executing "${deleteUrl}"...`);
            $.ajax({
                type: "POST",
                url: deleteUrl
            });
        }, index * 1000);
        index++;
    });
}

[ANIME]MyAnimeList-DeleteAllEntry-ModernListStyle.js

var index = 0;
if (confirm(`Are you sure you want to DELETE ALL your entries in this section?`)) {
    $("#list-container > div.list-block > div > table > tbody > tr.list-table-data > td.data.image > a").each(function () {
        var animeLink = $(this).attr("href");
        var animeId = animeLink.substring(
            animeLink.lastIndexOf("anime/") + 6,
            animeLink.lastIndexOf("/")
        );
        var deleteUrl = `/ownlist/anime/${animeId}/delete`;
        setTimeout(function () {
            console.log(`[DELETE] Executing "${deleteUrl}"...`);
            $.ajax({
                type: "POST",
                url: deleteUrl
            });
        }, index * 1000);
        index++;
    });
}

[MANGA]MyAnimeList-DeleteAllEntry-ClassicListStyle.js

var index = 0;
if (confirm(`Are you sure you want to DELETE ALL your entries in this section?`)) {
    $("a.animetitle").each(function () {
        var mangaLink = $(this).attr("href");
        var mangaId = mangaLink.substring(
            mangaLink.lastIndexOf("manga/") + 6,
            mangaLink.lastIndexOf("/")
        );
        var deleteUrl = `/ownlist/manga/${mangaId}/delete`;
        setTimeout(function () {
            console.log(`[DELETE] Executing "${deleteUrl}"...`);
            $.ajax({
                type: "POST",
                url: deleteUrl
            });
        }, index * 1000);
        index++;
    });
}

[MANGA]MyAnimeList-DeleteAllEntry-ModernListStyle.js

var index = 0;
if (confirm(`Are you sure you want to DELETE ALL your entries in this section?`)) {
    $("#list-container > div.list-block > div > table > tbody > tr.list-table-data > td.data.image > a").each(function () {
        var mangaLink = $(this).attr("href");
        var mangaId = mangaLink.substring(
            mangaLink.lastIndexOf("manga/") + 6,
            mangaLink.lastIndexOf("/")
        );
        var deleteUrl = `/ownlist/manga/${mangaId}/delete`;
        setTimeout(function () {
            console.log(`[DELETE] Executing "${deleteUrl}"...`);
            $.ajax({
                type: "POST",
                url: deleteUrl
            });
        }, index * 1000);
        index++;
    });
}

Thanks! and I was wondering if it works on the manga list too?

just change the line: animeLink.lastIndexOf("anime/") + 6, to animeLink.lastIndexOf("manga/") + 6,
and var deleteUrl = /ownlist/anime/${animeId}/delete; to var deleteUrl = /ownlist/manga/${animeId}/delete;
worked for me

I used the classic anime, and the classic manga, they worked perfectly. Arigatou!

Thank you so much, still works perfectly. Just make sure you use the correct version.
If you wanna do it on your phone, use kiwi browser.

The moronic mods on MAL are literally telling ppl not to use scripts, not to create new accounts, they're both bannable offenses. And to just suffer through it and remove everything manually because the other methods are taxing on their servers.... I'd rather switch service than waste an hour doing it manually