ÐApp - devopstaku/ERC20_DApp GitHub Wiki

What is ÐApp

it's because that letter is called ETH in greek. Technically Ðapp can be read as Ethapp. Also it looks cool.
http://gavwood.com/paper.pdf, Section 2.1

To address this issue, Ethereum has an intrinsic currency, Ether, known also as
ETH and sometimesreferred to by the Old English Ð

The Ethereum Platform created a protocol for building decentralized applications.
It is an open-source public, blockchain-based distributed computing platform which features smart contracts functionality, also called scripting.
It provides a decentralized Turing-complete virtual machine, the Ethereum Virtual Machine (EVM), which execute scripts using an international network of public nodes.
ÐApps are more flexible, transparent, distributed, and resilient and have a better incentivized structure software model.
A Ðapp is an application that has its back-end code running on a peer-to-peer network instead of a centralized machine. A Ðapp can have front-end code written in any way you desire and Ethereum has created a web3.js library to be used for Ðapp development.

3 ways of instantiating web3:
https://gist.github.com/frozeman/fbc7465d0b0e6c1c4c23
Contract deployment by code:
(Outdated, use web3.contract(abiArray).new({}, function(e, res){...})) https://gist.github.com/frozeman/655a9325a93ac198416e
Test a contract transaction with a call before actually sending: https://gist.github.com/ethers/2d8dfaaf7f7a2a9e4eaa

Ðapp Structure with web3.js

Smart contracts are the user-defined applications that enumerate rules controlling the transaction and are stored in the blockchain.
Smart contracts consist of program codes, a storage file, and an account balance.
They can read and execute other contracts, make decisions, store data and send ether to others.