web3.js why is there dots when calling addresses

Question

I'm trying to use web3.js to use the "transfer" function of an ERC20 token.

I've found this example here : How to send ERC20 token using Web3 API? which seems good (but kind of old)

But I notice they almost always put "..." after an address like so :

var contractAddress = "0x8...";

or

"data": contract.transfer.getData("0xCb...", 10, {from: "0x26..."}),

Why is that ?

Answer 1

They just don't want to reveal the addresses and keys to everyone on stackexchange.

To get it to work, you must use a full address, without the dots.