App.get - is there any difference between res.send vs return res.send
I'm new to node and expressing. I've seen examples of app.get and app.post using both "res.send" and "return res.send". It is the same?
var express = require('express');
var app = express();
app.get('/', function(req, res) {
res.type('text/plain');
res.send('i am a beautiful butterfly');
});
or
var express = require('express');
var app = express();
app.get('/', function(req, res) {
res.type('text/plain');
return res.send('i am a beautiful butterfly');
});
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2 answers
The keyword is return
returned from your function, thus ending its execution. This means that any lines of code after it will not be executed.
In some cases, you can use res.send
and then do other things.
app.get('/', function(req, res) {
res.send('i am a beautiful butterfly');
console.log("this gets executed");
});
app.get('/', function(req, res) {
return res.send('i am a beautiful butterfly');
console.log("this does NOT get executed");
});
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app.get('/', function(req, res) {
res.type('text/plain');
if (someTruthyConditinal) {
return res.send(':)');
}
// The execution will never get here
console.log('Some error might be happening :(');
});
app.get('/', function(req, res) {
res.type('text/plain');
if (someTruthyConditinal) {
res.send(':)');
}
// The execution will get here
console.log('Some error might be happening :(');
});
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