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Klaytn 2.0
Klaytn Overview
Getting Started
Smart Contract
Installation & Operation
dApp Developers
JSON-RPC APIs
Klaytn SDKs
Tutorials
Fee Delegation Example
dApp on Baobab (Video Lecture)
Count BApp
1. Environment Setup
2. Clone Count BApp
3. Directory Structure
4. Write Smart Contract
5. Frontend Code Overview
6. Deploy Contract
7. Run App
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Migrating Ethereum App to Klaytn
Connecting MetaMask
Connecting Remix
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Count BApp

Table of Contents

Introduction

intro
This tutorial is intended to give a step by step guide to build a Klaytn dApp. No previous Klaytn experience is needed. We will make a simple web app interacting with a basic smart contract, Count. Any user who has a Klaytn account can increase and decrease the current value as shown in the above gif.
Source Code Complete source code can be found on GitHub at https://github.com/klaytn/countbapp​

Intended Audience

Anyone who wants to learn how to build a Blockchain Application on Klaytn. We will build a web application that interacts with smart contracts. To complete this tutorial, the audience is expected to be familiar with the following concepts.
  • We assume that you have basic knowledge on React and Redux. This course is not for absolute beginners.
  • Basic knowledge and experience in Solidity development are recommended. However, any experienced SW developer should be able to complete the task by following the step-by-step guideline of this tutorial.

Testing Environment

Count BApp is tested in the following environment.
  • MacOS Mojave 10.14.5
  • Node 10.16.0 (LTS)
  • npm 6.9.0
  • Python 2.7.10
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Contents
Table of Contents
Introduction
Intended Audience
Testing Environment