discord.js how to get a channel id that a certain person is in code example

Example 1: Find channel discord js

// Insert the Channel ID in the brackets. TO find that, right click the
// channel and select "Copy ID". Discord Developer must be on.
let channel = message.guild.channels.cache.get(channelid)

Example 2: how to get a channelid discord.js

message.guild.channels.cache.get(channelid);