How to make args case insensitive?

Question

So I have this if statement

const args = message.content.slice(prefix.length).trim().split(/ +/);

if(args[0] == /word/i)

How can I make "word" case insensitive? I already tried /^word/i "word"/i

Answer 1

那更简单的方法呢（我想也更快）

args[0].toLowerCase() === whatEver.toLowerCase()