Proper way to use javascript with expressjs in node

I'm trying to learn JavaScript and full-stack development and I can't quite wrap my head around how to use express with JavaScript properly ....

my question goes like this :

in every tutorial iv'e seen online the following syntax is being used :

app.get('/',function(request,response,next){

 var something = request.body.something;
 if(something){do stuff...}
 else{do other stuff...}

})

what if I wan't to not use anonymous functions but predefined named ones?

how would I use them in express methods?

will something like this be o.k? :

function doStuffwithTheRequest(request,response,next){

 var something = request.body.something;
 if(something){do stuff...}
 else{do other stuff...}

};


app.get('/',doStuffwithTheRequest());

and if so what would be the proper way to pass the parameters in this manner ?

Iv'e tried coding like this but i cant seem to be able to pass the parameters to the function when it's predefined ...

via Gal Ratzkin