h5存储localStorage方法

用到搜索难免需要来存搜索记录。这是localStorage的功能就显而易见了

1.存搜索记录

export const saveStorage = (key, data) => {
    try {
        var serializedState = JSON.stringify(data);//系列化对象。把对象的类型转换为字符串类型
        localStorage.setItem(key, serializedState);
    } catch (err) {
        //ignore errors.
    }
}

2.拿搜索记录

export const loadStorage = (key) => {
    try {
        const serializedState = localStorage.getItem(key);
        if (serializedState === null) {
            return undefined;
        }
        return JSON.parse(serializedState);//json字符串转换成对象
    } catch (err) {
        return undefined;
    }
}