LocalStorage as REST using JavaScript

web-snippet-029 ( LocalStorage as REST using JavaScript )

function gets(storage)
{
    var array;
    if(!localStorage[storage]) array = [];
    else array = JSON.parse(localStorage[storage]);
    return array;
}

function get(storage, id)
{
    if(!localStorage[storage]) return false;
    var array = JSON.parse(localStorage[storage]);
    var element;
    for(var i in array) if(array[i]['id'] == id) { element = array[i]; break; }
    if(!element) return false;
    return element;
}

function post(storage, element)
{
    var array;
    if(!localStorage[storage]) array = [];
    else array = JSON.parse(localStorage[storage]);
    element['id'] = array.length + 1;
    array.push(element);
    localStorage[storage] = JSON.stringify(array);
    return true;
}

function put(storage, id, option)
{
    if(!localStorage[storage]) return false;
    var array = JSON.parse(localStorage[storage]);
    var element;
    for(var i in array) if(array[i]['id'] == id) { element = array[i]; break; }
    for(var key in option) element[key] = option[key];
    localStorage[storage] = JSON.stringify(array);
    return true;
}

function delete(storage, id)
{
    if(!localStorage[storage]) return false;
    var array = JSON.parse(localStorage[storage]);
    var index = -1;
    for(var i in array) if(array[i]['id'] == id) { index = i; break; }
    if(index == -1) return false;
    array.splice(index, 1);
    localStorage[storage] = JSON.stringify(array);
    return true;
}