Add event

xilibi2003 · May 9, 2018 · 9294457 · 9294457
1 parent 6a38276
commit 9294457
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diff --git a/InfoContractEvent.sol b/InfoContractEvent.sol
@@ -0,0 +1,22 @@
+pragma solidity ^0.4.21;
+
+contract InfoContract {
+
+   string fName;
+   uint age;
+
+    event Instructor(
+       string name,
+       uint age
+    );
+
+   function setInfo(string _fName, uint _age) public {
+       fName = _fName;
+       age = _age;
+       emit Instructor(_fName, _age );
+   }
+
+   function getInfo() public constant returns (string, uint) {
+       return (fName, age);
+   }   
+}
diff --git a/indexWithEvent.html b/indexWithEvent.html
@@ -0,0 +1,124 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <title>Document</title>
+
+    <link rel="stylesheet" type="text/css" href="main.css">
+
+    <script src="./node_modules/web3/dist/web3.min.js"></script>
+
+</head>
+<body>
+    <div class="container">
+
+        <h1>Info Contract</h1>
+
+        <h2 id="info"></h2>
+
+        <img id="loader" src="https://loading.io/spinners/double-ring/lg.double-ring-spinner.gif">
+
+        <label for="name" class="col-lg-2 control-label">Name</label>
+        <input id="name" type="text">
+
+        <label for="name" class="col-lg-2 control-label">Age</label>
+        <input id="age" type="text">
+
+        <button id="button">Update Info</button>
+
+
+    </div>
+
+    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
+
+    <script>
+       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:7545"));
+        }
+
+        web3.eth.defaultAccount = web3.eth.accounts[0];
+
+        var infoContract = web3.eth.contract([
+	{
+		"anonymous": false,
+		"inputs": [
+			{
+				"indexed": false,
+				"name": "name",
+				"type": "string"
+			},
+			{
+				"indexed": false,
+				"name": "age",
+				"type": "uint256"
+			}
+		],
+		"name": "Instructor",
+		"type": "event"
+	},
+	{
+		"constant": false,
+		"inputs": [
+			{
+				"name": "_fName",
+				"type": "string"
+			},
+			{
+				"name": "_age",
+				"type": "uint256"
+			}
+		],
+		"name": "setInfo",
+		"outputs": [],
+		"payable": false,
+		"stateMutability": "nonpayable",
+		"type": "function"
+	},
+	{
+		"constant": true,
+		"inputs": [],
+		"name": "getInfo",
+		"outputs": [
+			{
+				"name": "",
+				"type": "string"
+			},
+			{
+				"name": "",
+				"type": "uint256"
+			}
+		],
+		"payable": false,
+		"stateMutability": "view",
+		"type": "function"
+	}
+]);
+
+        var info = infoContract.at('0x345ca3e014aaf5dca488057592ee47305d9b3e10');
+
+        var instructorEvent = info.Instructor();
+       instructorEvent.watch(function(error, result){
+            if (!error)
+                {
+                    $("#loader").hide();
+                    $("#info").html(result.args.name + ' (' + result.args.age + ' years old)');
+                } else {
+                    $("#loader").hide();
+                    console.log(error);
+                }
+        });
+
+        $("#button").click(function() {
+            $("#loader").show();
+            info.setInfo($("#name").val(), $("#age").val());
+        });
+
+    </script>
+
+</body>
+</html>
diff --git a/main.css b/main.css
@@ -26,4 +26,9 @@ button {
     padding:1em;
     background-color:#fff;
     margin: 1em 0;
+}
+
+#loader {
+    width: 100px;
+    display:none;
 }