A silly question about web3.eth.sign

Question

I'm a beginner and I need to sign the data with metamask，Find the document https://learnblockchain.cn/docs/web3js-0.2x/web3.eth.html#sign

then In the browser's debug desk ，i try run

web3.eth.sign('0xB2b63803188fb6efafD83FE67bec878eD4d8940B','data',console.log)

metamask responded to my request，and popped up the prompt

But after I confirm it，No return value

If anyone knows, please help me，thanks

Answer 1

ok, i know

Signature information of eth.sign needs to be treated with web3.sha3

but personal.sign don't need it