Required Dependencies: sqlite
Well considering that this question is very general, I’ll give a fairly general answer. Knowing that you’re using discord.js …
One way you can complete your goal, is by creating an sqlite database. Note: this does not involve variables. To do this, you will have to require sqlite as a dependency:
const sql = require("sqlite");
Once completed this, you can create the file, the database will be in:
sql.open("./database.sqlite")
After which you will set up the table for the users:
sql.run("CREATE TABLE IF NOT EXISTS userData (userId TEXT, money INTEGER)").then(() => {
sql.run("INSERT INTO userData (userId, money) VALUES (?, ?)", [<user id object here>, 0]);
});
That would create a database you can use to store information about each user in your guild.
After which to update their balance follow this format (example):
sql.get(`SELECT * FROM userData WHERE userId = ${msg.author.id}`).then(row => { //the row is the user's data
if(!row) { //if the user is not in the database
sql.run("INSERT INTO userData (userId, money) VALUES (?, ?)", [`${guildId}`, <user id object here>, 0]); //let's just insert them
msg.channel.send("Registered.")
} else { //if the user is in the database
sql.run(`UPDATE userData SET money = ${row.money + 100} WHERE guild = ${msg.guild.id}`)
}
});
If there are issues in the code provided or errors, feel free to comment or contact me 🙂