From 6144a2d43143c6860ccb7a48182a1430ee07b1e7 Mon Sep 17 00:00:00 2001
From: zh-lx <18366276315@163.com>
Date: Mon, 8 Nov 2021 23:29:52 +0800
Subject: [PATCH] =?UTF-8?q?=E5=85=AD:=201.=E5=AE=8C=E5=96=84=E7=B1=BB?=
 =?UTF-8?q?=E7=BB=84=E4=BB=B6=E5=8A=9F=E8=83=BD?=
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---
 src/index.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/index.js b/src/index.js
index 3ffaf4c..b160d83 100644
--- a/src/index.js
+++ b/src/index.js
@@ -5,14 +5,22 @@ import './index.css';
 class ClassComponent extends Component {
   constructor(props) {
     super(props);
-    this.state = {};
+    this.state = { count: 0 };
   }
 
+  addCount = () => {
+    this.setState({
+      count: this.state.count + 1,
+    });
+  };
+
   render() {
     return (
       <div className="class-component">
         <div>this is a class Component</div>
         <div>prop value is: {this.props.value}</div>
+        <div>count is: {this.state.count}</div>
+        <input type="button" value="add count" onClick={this.addCount} />
       </div>
     );
   }