export default {
    get: function(key) {
        var value = localStorage.getItem(key);
        if (value) {
            try {
                var value_json = JSON.parse(unescape(value));
                if (typeof value_json === 'object') {
                    return value_json;
                } else if (typeof value_json === 'number') {
                    return value_json;
                }
            } catch(e) {
                return value;
            }
        } else {
            return false;
        }
    },
    set: function(key, value) {
        localStorage.setItem(key, escape(JSON.stringify(value)));
    },
    remove: function(key) {
        localStorage.removeItem(key);
    },
    clear: function() {
        localStorage.clear();
    }
};






main.js中 Vue.prototype.$ls = ls