member someone

var csrfmiddleware = document.getElementsByName("csrfmiddlewaretoken")[0].value;

async function addMember(world, username)
{
    var data = new URLSearchParams();

    data.append("csrfmiddlewaretoken", csrfmiddleware);
    data.append("form", "add_member");
    data.append("add_member", username);

    await fetch(`https://ourworldoftext.com/accounts/configure/${world}/`, {
        method: "POST",
        body: data
    });
}

// usage:
// await addMember("myworld", "KKosty4ka");