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Decentralized crowd funding platform where user can start fundraising , anyone can contribute & Fund riser need permission of contributor before withdrawing amount from contract .

Solidity 13.59% JavaScript 84.26% CSS 2.15%

crowdfunding-dapp's Introduction

Crowd funding

demo.mp4

Project features 💡

User can start a fundraising.
Anyone can contribute.
End project if targeted contribution amount reached.
Expire project if targeted amount not fulfills between deadline.
Contributors can withdraw contributed amount if project expire.
Owner need to request contributors for withdraw amount.
Owner can withdraw amount if 50% contributors agree.
Connect with waller.

Tech stack & packages used 📦

package	explain
Next.js	For building frontend
solidity	For writting smart contracts
tailwind css	For building design
ether.js	Web3 client (contract testing ).
web3.js	Web3 client (Frontend Next.js).
Chai	javascript testing framework.
react-toastify	For Notification.
hardhat	Ethereum development environment.
Redux	For managing and centralizing application state.

How to run 🏃 :

Run hardhat node
```
npx hardhat node
```
Run test cases
```
npx hardhat test
```
Connect HardHat Account to Metamask

Hardhat.Account.Creation.mp4

Deploy contract in local hardhat node

npx hardhat run scripts/deploy.js --network localhost

Run Next.js frontend
```
cd client
npm run dev
```
Connect account to website

Web3.js

Load web3

Connect with contract

new web3.eth.Contract(jsonInterface[, address][, options])

Callback promises events

.on('transactionHash', function(hash){ ... })
.on('error', function(error){ ... })

Subscribe to event

contractName.events.EventName([options][, callback])

Fetch all data from contract event
- An array with the past event Objects, matching the given event name and filter.
```
contractName.getPastEvents(EventName[, options][, callback])
```

Hardhat commands

npx hardhat accounts
npx hardhat compile
npx hardhat clean
npx hardhat test
npx hardhat node
node scripts/deploy.js
npx hardhat help
npx hardhat run scripts/deploy.js --network <network name>

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