This is my simple code. and i need optional fields (fd, fdd) on my slesh command embed builder. how can i do?empty fields no delete so.if my field value is empty, then don't show up, and if the field is have a value then add on embed. optional values.

    const desc = options.getString("leírás");
    const fd1 = options.getString("field1");
    const fd2 = options.getString("field2");
    const fd3 = options.getString("field3");
    const fdd1 = options.getString("fielddesc1");
    const fdd2 = options.getString("fielddesc2");
    const fdd3 = options.getString("fielddesc3");
    
    //cache.find(role => role.id === "967822275355246732");A

    const Response = new MessageEmbed()
    .setColor("RANDOM")
    .setDescription(`${interaction.member} létrehozott egy <@&963762743150796810>-t, **${type}** kategóriával.`)
    .setThumbnail('https://media.discordapp.net/attachments/967828295121006592/969690574674354337/958794200999145513.png')
    .addField("⟬Cím⟭", `${title}`)
    .addField("⟬Leírás⟭", `${desc}`)
    .addField(`${fd1}`, `${fdd1}`)
    .addField(`${fd1}`, `${fdd1}`)
    .addField(`${fd2}`, `${fdd2}`)
    .addField(`${fd3}`, `${fdd3}`)
    .setFooter({text: "*`Telihold, Tele mosoly :)`*"})
    .setTimestamp()
    const message = await interaction.reply({embeds: [Response], fetchReply: true});
    message.react('🔥')

        .then(() => message.react('❤️'))
        .catch(error => console.error('Nem tudom betölteni az egyik hangulatjelet', error));
}

}

///i tried this way but not good///

    .addField("⟬Cím⟭", `${title}`)
    .addField("⟬Leírás⟭", `${desc}`)
    .setFooter({text: "*`Telihold, Tele mosoly :)`*"})
    .setTimestamp()
    const message = await interaction.reply({embeds: [Response], fetchReply: true});
    message.react('🔥')
        .then(() => message.react('❤️'))
        .catch(error => console.error('Nem tudom betölteni az egyik hangulatjelet', error));
        if (`${fd1}`)
        Response.addField(`${fd1}`, `${fdd1}`)
        if (`${fd2}`)
        Response.addField(`${fd1}`, `${fdd1}`)
        if (`${fd3}`)
        Response.addField(`${fd1}`, `${fdd1}`)
        return interaction.reply({embeds: [Response], fetchReply: true});