Taro+TypeScript实现任意页面点击回到首页顶部

思路：存一个变量到本地，到达首页的时候查看是否有这个变量，在再次回到首页时检查是否存在这个变量，要是有则利用Taro的回到顶部api。 任意页面的点击回到首页位置：

<View className='item' onClick={() => goToCard()}>
    <Image className='mingpian_icon' src={mingpian} />
    <Text className='contact'>名片</Text>
</View>

import { storage } from '@utils';
const goToCard = () => {
    storage.setLocalStorage('isTop', true);
    gotoSwitch(`/pages/home/home`);
    setSelectedIndex(0);
  };

首页的回到顶部操作：(回到顶部之后记得清除)

import { storage } from '@utils';
 useDidShow(() => {
    const isTop = storage.getLocalStorage('isTop');
    if (isTop) {
      scrollTop();
      storage.removeLocalStorage('isTop');
    }
  });

//storage.ts对Taro的原有寸本地api进行二次封装
import Taro from '@tarojs/taro';
// 获取 LocalStorage
const getLocalStorage = (name) => {
  try {
    const value = Taro.getStorageSync(name);
    return value;
  } catch (e) {
    // error
  }
};
// 设置 LocalStorage
const setLocalStorage = (name, value) => {
  try {
    Taro.setStorageSync(name, value);
  } catch (e) {
    // error
  }
};
// 删除 LocalStorage
const removeLocalStorage = (name) => {
  try {
    Taro.removeStorageSync(name);
  } catch (e) {
    // error
  }
};
// 清空本地缓存
const clearLocalStorage = () => {
  Taro.clearStorage();
};

export default {
  getLocalStorage,
  setLocalStorage,
  removeLocalStorage,
  clearLocalStorage,
};

//utils里的index.ts
export { default as storage } from './storage';