Merge branch 'main' of github.com:joey998/blog

output.js

@@ -0,0 +1,41 @@
+function testLog(a,b,cs){console.log(a, b, c);}
+
+function alert(a) {
+  alert(a);
+}
+
+
+// 以下每一种都能被匹配到
+const a1 = 123;
+const a2 = "b";
+const a3 = () => 1;
+
+const dict = {
+  a: 1,
+  b: 2,
+  c: 'f',
+};
+
+class Toggle extends React.Component {
+  constructor(props) {
+    super(props);
+    this.state = { isToggleOn: true };
+
+    // This binding is necessary to make `this` work in the callback
+    this.handleClick = this.handleClick.bind(this);
+  }
+
+  handleClick() {
+    this.setState((prevState) => ({
+      isToggleOn: !prevState.isToggleOn,
+    }));
+  }
+
+  render() {
+    return (
+      <button onClick={this.handleClick}>
+        {this.state.isToggleOn ? 'ON' : 'OFF'}
+      </button>
+    );
+  }
+}

output2.js

@@ -0,0 +1,23 @@
+class Toggle extends React.Component {
+  constructor(props) { 
+      super(props);
+  this.state = { isToggleOn: true };
+  // This binding is necessary to make `this` work in the callback
+  this.handleClick = this.handleClick.bind(this);;
+      this.handleClick = this.handleClick.bind(this)
+    }
+
+  handleClick() {
+    this.setState((prevState) => ({
+      isToggleOn: !prevState.isToggleOn,
+    }));
+  }
+
+  render() {
+    return (
+      <button onClick={this.handleClick}>
+        {this.state.isToggleOn ? 'ON' : 'OFF'}
+      </button>
+    );
+  }
+}