So my Mix-ide install seems irrevocably crashed and given that there's no other IDE with integrated UI, I'm forced to face the inevitable learning of authoring HTML UI without much of a web dev background. Though there's plenty of material out there about backend DAPP development, I find almost nil regarding front end DAPP UI development. I'd like to start learning how to integrate with Mist. But that aside....

I have the web3.js package in Node and I have web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545")); in my UI html.

Q. For the purposes of a local test chain, where am I suppose to store this page and what serves it to what URL?

2 Answers 2


So for serverless connection of an HTML front-end to a local node, I:

1) dropped web3.js into the DAPP's directory

2) in the HTML included:

<script type="text/javascript" src="web3.js"></script>
<script type='text/javascript'>
var Web3 = require('web3');

if (typeof web3 !== 'undefined') {
  web3 = new Web3(web3.currentProvider);
} else {
  // set the provider you want from Web3.providers
  web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));

3) started geth with the --rpccorsdomain="*" switch to prevent Chrome from blocking the calls.

  • Where should be DAPP's directory? is it where html exist? @o0ragman0o
    – alper
    Mar 1, 2017 at 11:30
  • 1
    Same directory as your existing dependant HTML is easiest. I was doing this just to get light-weight test harness front ends.I'm mostly using Meteor now which has some recommended directory structures.
    – o0ragman0o
    Mar 2, 2017 at 12:20

given that there's no other IDE with integrated UI


How about truffle for a web framework with contract compilation?

Extratip: testrpc to simulate a blockchain the lean way.

  • Have been using browser-solidity but don't know if it's possible to integrate/connect a UI as Mix did. Trying to avoid truffle for now as it constitutes another learning curve while I'm just trying to get the basics of hooking in a UI to a node. dropping web3.js in the same directory and 'src'ing it in the web page works, but now am faced with CORS problems...
    – o0ragman0o
    Sep 1, 2016 at 10:56
  • I understood "integrated UI" more that it provides a form for calling functions Sep 1, 2016 at 11:00
  • Talking more front end HTML. Mix-ide has webkit (or whatever) so you can edit and hook into your contract from the web page. Just looking for quick and dirty ways to do this with a geth on a private test chain without having to set up a local web server.
    – o0ragman0o
    Sep 1, 2016 at 11:09
  • got it... now I know what --rpccorsdomain='*' is actually for!
    – o0ragman0o
    Sep 1, 2016 at 11:17
  • yeah and Metamask should also do what Mix does although not integrated Sep 1, 2016 at 11:25

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