Node.js: Difference between req.query[] and req.params

by

Given this route

app.get('/hi/:param1', function(req,res){} );
// regex version
app.get(/^\/hi\/(.*)$/, function(req,res){} );
// unnamed wild card
app.get('/hi/*', function(req,res){} );

and given this URL
http://www.google.com/hi/there?qs1=you&qs2=tube

You will have:

req.query

{
  qs1: 'you',
  qs2: 'tube'
}

req.params

{
  param1: 'there'
}

When you use a regular expression for the route definition, capture groups are provided in the array using req.params[n], where n is the nth capture group. This rule is applied to unnamed wild card matches with string routes

Express req.params >>

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