libs-js/src/sessionStorage.js

零散的工具函数，无依赖

const _is_session_storage = !!window.sessionStorage;
let _data_session_dom, _dataSessionDom_name = window.location.hostname || 'sessionUserData';
if (!_is_session_storage) {
    try {
        _data_session_dom = document.createElement('input');
        _data_session_dom.type = 'hidden';
        _data_session_dom.style.display = "none";
        _data_session_dom.addBehavior('#default#userData'); //userData的语法
        document.body.appendChild(_data_session_dom);
        _data_session_dom.expires = new Date($.date().addDays(365)).toUTCString(); //设定过期时间
        //加载userdata
        _data_session_dom.load(_dataSessionDom_name);
    } catch (e) {
        _data_session_dom = null;
        console.log("userData初始化失败！");
    }
}
export const session_storage = (key, value) => {
    let _return_value;
    try {
        if (_is_session_storage) {
            if (value != undefined) {
                sessionStorage.setItem(encodeURIComponent(key), encodeURIComponent(value));
            } else {
                _return_value = sessionStorage.getItem(encodeURIComponent(key));
                return _return_value ? decodeURIComponent(_return_value) : null;
            }
        } else if (_data_session_dom) {
            if (value != undefined) {
                _data_session_dom.setAttribute(key, value);
                _data_session_dom.save(_dataSessionDom_name);
            } else {
                _return_value = _data_session_dom.getAttribute(key);
                return _return_value ? decodeURIComponent(_return_value) : null;
            }
        }
    } catch (e) {
        return false;
    }
};
export const remove_session_storage_item = (key) => {
    if (_is_session_storage) {
        sessionStorage.removeItem(encodeURIComponent(key));
    } else if (_data_session_dom) {
        _data_session_dom.removeAttribute(encodeURIComponent(key));
        _data_session_dom.save(_dataSessionDom_name);
    }
};
export const clear_session_storage = () => {
    if (_is_session_storage) {
        sessionStorage.clear();
    } else {
        _data_session_dom.remove();
    }
};