react项目实战学习笔记-学习19-下拉菜单

import React, { useEffect, useState } from 'react'
import logoImg from '../assets/logo.png'
import { Menu, Dropdown, message } from 'antd';
import { CaretDownOutlined } from '@ant-design/icons';
import { useNavigate } from 'react-router-dom'
function Header(props) {
    const navigate = useNavigate()
    // const [avatar, setAvatar] = useState(defaultAvatar)
    const [username, setUsername] = useState("游客")
    // 退出登录
    const logout = () => {
        message.success('退出成功，即将返回登录页')
        localStorage.clear();   // 清除localStorage中的数据
        setTimeout(() => navigate('/login'), 1500)
    }
    const menu = (
        <Menu>
            <Menu.Item key={1}>修改资料</Menu.Item>
            <Menu.Divider />
            <Menu.Item key={2} onClick={logout}>退出登录</Menu.Item>
        </Menu>
    );
    return (
        <header>
            <img src={logoImg} alt="" style={{width:"100px",height:"20px"}} className="logo" />
            <div className="right">
                <Dropdown overlay={menu}>
                    <a className="ant-dropdown-link" onClick={e => e.preventDefault()}>
                        <img  className="avatar" alt="" />
                        <span>{username}</span>
                        <CaretDownOutlined />
                    </a>
                </Dropdown>
            </div>
        </header>
    )
}
export default Header