119 lines
2.3 KiB
JavaScript
119 lines
2.3 KiB
JavaScript
(function (){
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"use strict";
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//No support for localstorage? Bail out early
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if(typeof localStorage === "undefined" || typeof JSON === "undefined")
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{
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return;
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}
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//Shortcuts for wrapper
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var l = localStorage,
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s = sessionStorage;
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/**
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* Wrapper for localstorage / sessionstorage data serialization.
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* Each method has a boolean parameter, that when set as true switches the method
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* to use sessionStorage rather than the default localStorage.
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*
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* @name store
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* @namespace
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* @memberOf $_
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*/
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var store = {
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/**
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* Retrieves and deserializes a value from localstorage,
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* based on the specified key
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*
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* @param string key
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* @param bool session
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* @name get
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* @memberOf $_.store
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* @function
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* @return object
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* @type object
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*/
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get: function (key, sess)
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{
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var val = (sess) ? s.getItem(key) : l.getItem(key);
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return JSON.parse(val);
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},
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/**
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* Puts a value into localstorage at the specified key,
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* and JSON-encodes the value if not a string
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*
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* @param string key
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* @param mixed value
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* @param bool session
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* @name set
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* @memberOf $_.store
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* @function
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*/
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set: function (key, value, sess)
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{
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// Localstorage generally only accepts strings
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value = JSON.stringify(value);
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(sess) ? s.setItem(key, value) : l.setItem(key, value);
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},
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/**
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* Removes the specified item from storage
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*
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* @param string key
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* @param bool session
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* @name remove
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* @memberOf $_.store
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* @function
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*/
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remove: function (key, sess)
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{
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(sess) ? s.removeItem(key) : l.removeItem(key);
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},
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/**
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* Returns an object of all the raw values in storage
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*
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* @param bool session
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* @name getAll
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* @memberOf $_.store
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* @function
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* @return object
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* @type object
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*/
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getAll: function (sess)
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{
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var i,
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len,
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data = {},
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k,
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o;
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//Reference to session/localstorage
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o = (sess) ? l : s;
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len = o.length;
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for (i = 0; i < len; i++)
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{
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k = o.key(i);
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data[k] = o.getItem(k);
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}
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return data;
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},
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/**
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* Removes all values from the same domain storage
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*
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* @param bool session
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* @name clear
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* @memberOf $_.store
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* @function
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*/
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clear: function(sess)
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{
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(sess) ? s.clear() : l.clear();
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}
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};
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$_.ext('store', store);
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}()); |