Is there a way to compile this into a smaller segment of code? - discord.js

Question

I am writing a discord bot to ping a user at a set interval. And I want to know if there is a way to compile this to not have to copy and paste the entire script to have the same thing happen for other users.
client.on('message', message => {
if(message.content === '&ping zach forever') {
setInterval(() => {
var yourchannel = client.channels.cache.get('704506336339034115');
yourchannel.send('<#UserID>');
}, "5000");
}});
client.on('message', message => {
if(message.content === '&ping maxx forever') {
setInterval(() => {
var yourchannel = client.channels.cache.get('704506336339034115');
yourchannel.send('<#UserID>');
}, "5000");
}});

Answer 1

I have no experience with discord bots in particular, but as general JavaScript advice:
const users = ["zach", "maxx"];
client.on('message', message => {
const splits = message.content.split(' ');
if (splits.length === 3 && splits[0] === '&ping' && splits[2] === 'forever' && users.includes(splits[1])) {
setInterval(() => {
var yourchannel = client.channels.cache.get('704506336339034115');
yourchannel.send('<#UserID>');
}, "5000");
}
});
Simply expand the users array with the required names. You can also modify the array at runtime with .push() and .splice(). If you'd like the bot to trigger even if there is text after the command, check for splits.length >= 3 instead.
PS. As a general rule, using var is frowned upon these days. Use const for values only assigned once, and let otherwise.
Edit:
Here's a bit more fleshed out example, that includes hardcoded user ID's for each name, applies the duration (in seconds), and also includes a &stop command to stop pinging a certain person. (Code is not tested to run correctly, since I don't have a discord bot account, and don't want to make one either)
const users = new Map(Object.entries({
"zach": "UserID1",
"maxx": "UserID2"
}));
const active = new Map();
client.on('message', message => {
const splits = message.content.split(' ');
if (splits.length === 3 && splits[0] === '&ping' && users.has(splits[1])) {
const channel = client.channels.cache.get('704506336339034115');
const message = `<#${users.get(splits[1])}>`;
const time = Number(splits[2]);
if (isNaN(time) && splits[2] !== 'forever') {
// Passed a time that wasn't a number - possibly send back an error message
} else {
const id = setInterval(() => channel.send(message), 5000);
active.set(splits[1], id);
if (!isNaN(time)) setTimeout(() => clearInterval(id), time * 1000);
}
}
if (splits.length === 2 && splits[0] === '&stop') {
const id = active.get(splits[1]);
if (id) {
clearInterval(id);
active.delete(splits[1]);
}
}
});