JavaScript Sprachraum

LiveWire
Your IP address is
<SERVER>write(request.ip)</SERVER>

Browser only&no I/O

The dawn of I/0

myElement.onclick = function () {
varelem = this;
setTimeout( function () {
}, 3000);
};

$.ajax({
url: url,
dataType: 'json',
data: data,
success: function () {}
});

Just get out there and use it
You may be working at a different level than you’re used to

Using node.js
varfs = require("fs");
fs.readFile(file,function(err,data) {
// do something
});

var http = require('http');
http.createServer(function (request, response) {
response.writeHead(200, {
'Content-Type': 'text/plain'});
response.end('Hello World ');
}).listen(8124);

var http = require('http');
varg = http.createClient(80, 'www.google.com');
var request = g.request('GET', '/', {
'host': 'www.google.com'});
request.end();
request.on('response', function (response) {
// do something with the response
});

CoffeeScript
“The mental model that you use to write CoffeeScript is identical to how you'd write the equivalent JavaScript”
Jeremy Ashkenas

(app.get "/projects/:id$", (req, res) ->
db.getDocreq.params.id, (err, doc) ->
if not doc
res.send 404
return
res.render "project.jade”)

TestingPackage managementBuilds

vows.describe('Zero').addBatch({
'When dividing by zero': {
topic: function () { return 2/0 },
'we get Infinity': function (t) {
assert.equal (t, Infinity); }
}
}).run();

Kyuri (gherkin)
Feature: Two bananas
Scenario:
Given I have one banana
When I receive one banana
Then I should have two bananas

nodeunit
exports.testTrue = function(test) {
test.expect(true);
test.ok(true, ”should be true");
test.done();
};

“Once you work out the social aspects of a problem, the technical
stuff is usually pretty straightforward.”
Isaac Schlueter

package.json
{
"name":”pk",
"version": "0.0.1",
"dependencies": {
"coffee-script": "0.9.2",
"vows": "0.5.1",
"hamljs": "0.4.5",
"express": "1.0.0",
"less": "1.0.32”
}
}

Cake&Jake

Composition
Arrows
http://www.cs.umd.edu/projects/PL/arrowlets
Reactive Extensions
http://bit.ly/bmBeRV

http://github.com/ry/node/wiki/modules
Already over 500 modules

http://www.webdirections.org	130
http://lanyrd.com	63

JavaScript Sprachraum

by patricklee

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