xxx

project/p4/src/components/header/index.js

@@ -0,0 +1,19 @@
+import React,{Component} from 'react';
+import prop from 'prop-types';
+class HeaderComponent extends Component{
+    render(){
+        return(
+            <div id="header" style={this.props.isShow ? {display:'block'}:{display:'none'}}>{this.props.title}</div>
+        );
+    }
+}
+//prop设置属性
+HeaderComponent.propTypes={
+    title:prop.string.isRequired,
+    isShow:prop.bool.isRequired
+}
+//prop设置默认值
+HeaderComponent.defaultProps={
+    title:'默认值'
+}
+export default HeaderComponent;