So basically there is an issue with math js where id it has to do this equation 1:999 or anymore nines it will crash.
try
{
if(args == "1:999") return message.channel.send('That question is not allowed');
} catch(error){
message.channel.send("there was an error")
}
Right now if you have it calculate 1:999 it gives an error, but I want it instead to see if the equation has any more nines. ex if i did 1:9999999 it would also give an error but basically anything over with more than three nines in this equation will give an error.
The following example shows a regular expression being used to test if a string is of the form "1:999", "1:9999", "1:99999", ...
if (/^1:999+$/.test(arg)) {
You can use the String#EndsWith to check if the string ends with the number of 9 you want using String#repeat
if (args.endsWith('9'.repeat(count))) {
console.log("Too many nines");
}