root@i-colbyo7v:/home/ubuntu# mkdir web3test && cd web3test root@i-colbyo7v:/home/ubuntu/web3test# npm init This utility will walk you through creating a package.json file. It only covers the most common items, and tries to guess sensible defaults.
See npm help json for definitive documentation on these fields and exactly what they do.
Use npm install <pkg> afterwards to install a package and save it as a dependency in the package.json file.
Press ^C at any time to quit. package name: (web3test) test version: (1.0.0) description: entry point: (index.js) test command: git repository: keywords: author: license: (ISC) About to write to /home/ubuntu/web3test/package.json:
{ “name”: “test”, “version”: “1.0.0”, “description”: “”, “main”: “index.js”, “scripts”: { “test”: “echo \”Error: no test specified\” && exit 1” }, “author”: “”, “license”: “ISC” }
Is this ok? (yes) yes \root@i-colbyo7v:/home/ubuntu/web3test# npm install web3 –save npm notice created a lockfile as package-lock.json. You should commit this file. npm WARN test@1.0.0 No description npm WARN test@1.0.0 No repository field.
web3@0.19.1 added 6 packages in 16.859s root@i-colbyo7v:/home/ubuntu/web3test# vim index.jsvar Web3 = require(“web3”); var web3 = new Web3(); web3.setProvider(new Web3.providers.HttpProvider(“http://localhost:8545“)); ~ ~~let source = “pragma solidity ^0.4.0;contract Calc{ uint count; function add(uint a, uint b) returns(uint){ count++; return a + b; } function getCount() returns (uint){ return count; }}”;
geth –identity “haha” –datadir ./data/00 –networkid 12345 –rpcapi “db,eth,net,web3” –port 61910 –rpcport 8200 console
