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JavaScript Build a Simple Dynamic Site with Node.js Creating a Simple Server in Node.js Preparing & Planning

Posted by George Akinian
George Akinian
17,615 Points

how come console.dir being a method is not taking any arguments here?

If it is suppose to print the body why is body not inside the parentheses ? how is body getting passed into the console.dir method.? isn't it suppose to be something like console.dir(document.body); ? I am just trying figure out how it is being wired here? Perhaps console.dir already knows it is taking in the body of the studentProfile because of the wiring studentprofile.on("end", console.dir) and therefore it is redundant to pass an argument inside console.dir method?. I just like to know what wires the wiring, I guess? Thanks

2 Answers

Azriel Garcia
Azriel Garcia
6,881 Points
Azriel Garcia
Azriel Garcia
6,881 Points

Hey

It's because in this instance they're defining console.dir as the call back so when the event fires it calls the method console.dir with the parameter passed in

Hope that helps if not I can provide a more detailed example

Brendan Moran
Brendan Moran
14,052 Points
Brendan Moran
Brendan Moran
14,052 Points

The "end" event passes the full body to the callback, in this case "console.dir."

It is the same as if we did something like this:

request.on("end", body => console.dir(body))

However, this would be redundant because the end event automatically passes the body as an argument, and console.dir will accept that argument because it is a method that is programmed to receive an object of some sort and display it in the console.

I hope that helps!