How do you check for different forms of a phrase discord.js

Question

I want my if command to detect different forms of the phrase. For example, in this case the phrase is Welcome . I want my if command to detect for different phrases such as welcome , Welcome , WElcome . Basically the phrase but it doesn't matter if the word or phrase is case sensitive. However, = , == , or === doesn't work.

Code:

if (args[1] == "welcome") {
        Mongodb.findOne({ guildId: message.guild.id, status: "Welcome" }, async (err, data) => {
            if (err) throw err;
            if (data) {
                data.Channel = channel.id;
                data.save();
            } else {
                new Mongodb({
                    guildId: message.guild.id,
                    channelId: channel.id,
                    status: "Welcome"
                }).save();
            }
            message.channel.send(`The welcome channel has been set to ${channel}!`);
        });
    }

Answer 1

What I would reccommend using is a Regex. You will need to write:

args[1].match(/welcome/gmi);

OR

args[1].match(new RegExp("welcome", "gmi"))

I would recommend using regex101 for any Regex problems. https://regex101.com/

Finally you can also use.toLowerCase to args[1] and match that with the lowercase version. However, the regex will probably be more efficient.

if(args[1].toLowerCase() === "welcome"){// do stuff}