Why does console.log(“hello”) inside console return undefined? [duplicate]

Answer 1

The console.log just write a text and return with undefined. If you create a function, add a returning value, there will be not undefined, it will returns with the added value. Example:

function writer(){
    console.log("write new line");
    return "ok";
}

If you call the writer() that the output is "ok" in new line after "write new line".