NEO dApp Starter Kit on neon-js

Also check out the License dApp smart contract from the NEO Amsterdam Tutorial

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Easily build dApps that interact with Smart Contracts on the NEO Blockchain, using NodeJS and the neon-js package

Instructions:

1. git clone https://github.com/deanpress/neo-dapp-starter-kit.git
2. cd neo-dapp-starter-kit && npm install
3. Edit backend/config.js accordingly with your desired REST endpoint, WIF, and smart contract script hash.

Inspect the methods in index.js, backend/util.js, and backend/blockchain.js for reference.

Also refer to the neon-js documentation.

Functions:

Invoke a smart contract with a method and an array of strings:

node.invokeContract('SetTask', ['someStorageKey', 'Hello World!'], account, (res) => {
    if(res.result === true){
        // Transaction successful. The stored data can be retrieved on the next block.
        console.log('Transaction processed!')
    }else{
        console.log('Transaction failed.')
        console.dir(res)
    }
})

Return a stored value from a smart contract by key:

node.getStorage('someStorageKey').then((res) => {
    if (typeof res === "string") {
        //Do something with the resulting value
    }
})

Test a transaction. This returns expected values from your smart contract, and doesn't send a transaction. Costs 0 gas. Note: testContract does not emit signed transactions, so it doesn't return data that uses a sender's address.

node.testContract('SetTask', ['someStorageKey', 'Hello World!'], (res) => {
    console.dir(res)
})

Created By:

• Dean van Dugteren (LinkedIn, Twitter) - neo-php, Vidiato, Click.DJ

Shout-out to the NEO dApp BlockSaver for the clear file structure, and functions in util.js!

Licensed under MIT License