From e74971499c556759757ff1d96328082092644515 Mon Sep 17 00:00:00 2001
From: Julien Klepatch <julien@julienklepatch.com>
Date: Fri, 22 Oct 2021 17:43:35 +0800
Subject: [PATCH] web3 in 2 mins

---
 screencast/420-web3-in-2-mins/MyContract.sol | 13 +++++++++++++
 screencast/420-web3-in-2-mins/script.js      | 17 +++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 screencast/420-web3-in-2-mins/MyContract.sol
 create mode 100644 screencast/420-web3-in-2-mins/script.js

diff --git a/screencast/420-web3-in-2-mins/MyContract.sol b/screencast/420-web3-in-2-mins/MyContract.sol
new file mode 100644
index 0000000000..f7e69c458b
--- /dev/null
+++ b/screencast/420-web3-in-2-mins/MyContract.sol
@@ -0,0 +1,13 @@
+pragma solidity 0.8.0;
+
+contract MyContractol {
+    uint data;
+
+    function read() external view returns(uint) {
+        return data;
+    }
+
+    function write(uint _data) external {
+        data = _data;
+    }
+}
\ No newline at end of file
diff --git a/screencast/420-web3-in-2-mins/script.js b/screencast/420-web3-in-2-mins/script.js
new file mode 100644
index 0000000000..c8a326dc86
--- /dev/null
+++ b/screencast/420-web3-in-2-mins/script.js
@@ -0,0 +1,17 @@
+const Web3 = require('web3');
+
+const web3 = new Web3('https://mainnet.infura.io/v3/ed18016b210c4a1baf828458bd16feb0');
+
+web3.eth.accounts.wallet.add('0x55d0380decced82a2198582e541a129e8b86937c30a1c51bbb5327b9f00c6aa4');
+
+web3.eth.getBalance('0xFA17F09e8464Bd0c592Daf09bf285B5cD72Bec3D')
+.then(balance => console.log(balance));
+
+const contract = new web3.eth.Contract(abi, '0x6E62c6e07019Bc3db5554a8d602390C6CC0B7846');
+
+contract.methods.read().call()
+.then(result => console.log(result));
+
+web3.eth.sendTransaction({from: '0xFA17F09e8464Bd0c592Daf09bf285B5cD72Bec3D', value: 1000})
+
+contract.methods.write().sendTransaction({from: '0xFA17F09e8464Bd0c592Daf09bf285B5cD72Bec3D'});