Save json to chrome storage / local storage

Question

I want to save json to chrome or local storage. I also need to be able too add items without losing the others.

Answer 1

Updated

var local = (function(){

    var setData = function(key,obj){
        var values = JSON.stringify(obj);
        localStorage.setItem(key,values);
    }

    var getData = function(key){
        if(localStorage.getItem(key) != null){
        return JSON.parse(localStorage.getItem(key));
        }else{
            return false;
        }
    }

    var updateDate = function(key,newData){
        if(localStorage.getItem(key) != null){
            var oldData = JSON.parse(localStorage.getItem(key));
            for(keyObj in newData){
                oldData[keyObj] = newData[keyObj];
            }
            var values = JSON.stringify(oldData);
            localStorage.setItem(key,values);
        }else{
            return false;
        }
    }

    return {set:setData,get:getData,update:updateDate}
})();

how do you use?

When you want to set a value:

var a = {'test':123};
local.set('valueA',a);

When you want to get the value:

var a = local.get('valueA')

When you want to update a value or insert a new one

var b = {'test':333,'test2':555};
local.set('valueA',b);

Answer 2

try this code:

// Object to store
var person = {
  'name': 'Dan',
  'age': 20,
  id: 7644
};

var value = JSON.stringify(person);
var key = person.id;

// Set person object into storage
localStorage.setItem(key, value);

// Get person object from storage
var personFromStorage = localStorage.getItem(key);

personFromStorage = JSON.parse(personFromStorage);

alert(personFromStorage.name);