lekhanh1234 / 9.Modules.md

Last active August 11, 2016 03:48

Module

Modules divide the program into clusters code

It will help some people does not work with that code from begining can maintain it

literate programming is a way to program, we can easy to understand the code, but when program becomes bigger and bigger then, it is hard to change that code.

Structure make program costly. On the begginning of a project, the structure shoud be as simplest as possible. And it will be developed step by step

Namespacing

lekhanh1234 / 10. A programing language.md

Last active July 18, 2016 17:03

#A Programming Language This gist is based on Chapter10, [EloquentJavascript] http://eloquentjavascript.net/ Building a programming is not hard as we think, as long as it can calculate the basic expression.
We's going to buid a programming language called Egg. ##Parsing The most basic part of a programming language is syntax, or notation. So, parsing have to read a text and convert them to the data structure. If the text is not valid form, parsing will show the error.
Everything in Egg is an expression. An Expression can be a variable, a string, a number, or an application!
DataStructure is presented in a bracket. It has some kinds of type:

{type: "value", value: [string or number]};

lekhanh1234 / 11.Browser.md

Last active August 11, 2016 04:17

Browser

HTML Construction

<!doctype html>
<html>

lekhanh1234 / 12.DOM.md

Last active August 4, 2016 01:12

#Document Object Model

Document Structure

HTML Structure

<!doctype html>
<html>
  <head>
    <title>Home page</title>

lekhanh1234 / 13.HandlingEvents.md

Last active August 11, 2016 04:35

Handling Events

Event Handlers

addEventListener: dom.addEventListener("[event_names]", function(){});

click
mouseover
mouseout
keydown
scroll

lekhanh1234 / StringTips.md

Created August 4, 2016 02:50

Javascript

Convert from charCode to char

String.fromCharCode(49);
String.fromCharCode(event.charCode);

lekhanh1234 / 17.HTTP.md

Last active August 8, 2016 08:15

HTTP

HTTP is the way data is requested and provided in WWW

The Protocol

When access to a URL, the browser will try to connect to the serve of this Website with TCP connection on port 80

After that, if the connection is success, the browser will send more detail. For instance, when we load (http://eloquentjavascript.net/17_http.html), browser will send something like this:

GET /17_http.html HTTP/1.1
Host: eloquentjavascript.net
Connection: keep-alive

lekhanh1234 / AsynCallbackPromise.md

Created August 8, 2016 04:11

Asynchronous and Synchronous

An example of Asynchronous:

setTimeout(function(){
    alert('1');
}, 0);
 
alert('2');

setTimeout is a Asyn function.

lekhanh1234 / 18.form.md

Created August 8, 2016 10:00

Exercise

eval code

<textarea id="code"></textarea>
<button id="button" onclick = run() >Run</button>
<pre id="output"></pre>

<script>
  function run(){

lekhanh1234 / chmod.wiki

Created August 11, 2016 15:27

In Unix-like operating systems, '''chmod''' is the command and system call which may change the access permissions to file system objects (files and directories). It may also alter special mode flags. The request is filtered by the umask. The name is an abbreviation of change mode.^[1]

History

A chmod command first appeared in AT&T Unix version 1.

As systems grew in number and types of users, access control lists ^[2] were added to many file systems in addition to these most basic modes to increase flexibility.

Khanh Le lekhanh1234