1. JavaScript at Backend

2. Agenda

3. Agenda
1. What?

4. Agenda
1. What?
2. Installing

5. Agenda
1. What?
2. Installing
3. Hello World.

6. Agenda
1. What?
2. Installing
3. Hello World.
4. How to run NodeJS Application.

7. Agenda
1. What?
2. Installing
3. Hello World.
4. How to run NodeJS Application.
5. NodeJS Internal Modules

8. Agenda
1. What?
2. Installing
3. Hello World.
4. How to run NodeJS Application.
5. NodeJS Internal Modules
○ fs(file-system) (sync vs async)

9. Agenda
1. What?
2. Installing
3. Hello World.
4. How to run NodeJS Application.
5. NodeJS Internal Modules
○ fs(file-system) (sync vs async)
○ http/https (HTTP Server with NodeJS)

10. Agenda
1. What?
2. Installing
3. Hello World.
4. How to run NodeJS Application.
5. NodeJS Internal Modules
○ fs(file-system) (sync vs async)
○ http/https (HTTP Server with NodeJS)
6. Handling HTTP Request

11. About Me
Amit Thakkar
Tech Blogger @ CodeChutney.in
JavaScript Lover
Working on MEAN Stack
Twitter: @amit_thakkar01
LinkedIn: linkedin.com/in/amitthakkar01
Facebook: facebook.com/amit.thakkar01

12. What?

13. Installing
https://nodejs.org/download/

14. Hello World

15. You can checkout Demo form:
https://github.com/AmitThakkar/JavaScript-at-Backend-NodeJS

16. How to run NodeJS App?

17. You can checkout Demo form: https://github.com/AmitThakkar/JavaScript-at-
Backend-NodeJS

18. Node Internal Modules: fs
(function (require) {
var fs = require('fs');
fs.unlinkSync('test2');
console.log('successfully deleted test2');
})(require);

19. Node Internal Modules: fs
(function (require) {
var fs = require('fs');
fs.unlinkSync('test2');
console.log('successfully deleted test2');
})(require);

20. Node Internal Modules: fs
(function (require) {
var fs = require('fs');
fs.unlinkSync('test2');
console.log('successfully deleted test2');
})(require);

21. Node Internal Modules: fs
(function (require) {
var fs = require('fs');
fs.unlink('test', function (err) {
if (err) throw err;
console.log('successfully deleted test');
});
})(require);

22. Node Internal Modules: fs
(function (require) {
var fs = require('fs');
fs.unlink('test', function (err) {
if (err) throw err;
console.log('successfully deleted test');
});
})(require);

23. Node Internal Modules: fs
(function (require) {
var fs = require('fs');
fs.unlink('test', function (err) {
if (err) throw err;
console.log('successfully deleted test');
});
})(require);

24. You can checkout Demo form: https://github.com/AmitThakkar/JavaScript-at-
Backend-NodeJS

25. Node Internal Modules: http
var http = require("http");
var server = http.createServer(requestHandler);
server.listen(9999, function() {
console.log('Server running at http://localhost:9999/');
});
function requestHandler(request, response) {
console.log("Request received.");
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("Hello World");
response.end();
}

26. Node Internal Modules: http
var http = require("http");
var server = http.createServer(requestHandler);
server.listen(9999, function() {
console.log('Server running at http://localhost:9999/');
});
function requestHandler(request, response) {
console.log("Request received.");
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("Hello World");
response.end();
}

27. Node Internal Modules: http
var http = require("http");
var server = http.createServer(requestHandler);
server.listen(9999, function() {
console.log('Server running at http://localhost:9999/');
});
function requestHandler(request, response) {
console.log("Request received.");
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("Hello World");
response.end();
}

28. Node Internal Modules: http
var http = require("http");
var server = http.createServer(requestHandler);
server.listen(9999, function() {
console.log('Server running at http://localhost:9999/');
});
function requestHandler(request, response) {
console.log("Request received.");
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("Hello World");
response.end();
}

29. Node Internal Modules: http
var http = require("http");
var server = http.createServer(requestHandler);
server.listen(9999, function() {
console.log('Server running at http://localhost:9999/');
});
function requestHandler(request, response) {
console.log("Request received.");
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("Hello World");
response.end();
}

30. You can checkout Demo form: https://github.com/AmitThakkar/JavaScript-at-
Backend-NodeJS

31. Handling HTTP Request
var requestHandler = function (request, response) {
var data = "";
switch (request.url) {
case "/" :
data = "HelloWorld";
break;
case "/me" :
data = "This is Me!";
break;
default :
data = "You lose in space";
}
response.writeHead(200, {"Content-Type": "text/plain"});
response.write(data);
response.end();
};

32. Handling HTTP Request
var requestHandler = function (request, response) {
var data = "";
switch (request.url) {
case "/" :
data = "HelloWorld";
break;
case "/me" :
data = "This is Me!";
break;
default :
data = "You lose in space";
}
response.writeHead(200, {"Content-Type": "text/plain"});
response.write(data);
response.end();
};

33. Questions??

34. References:
Create Basic HTTP Server with Node.js