CODEWITHSUNDEEP
javascriptarrays
Ahmad
Ahmad

Reputation: 61

How to store arrays of data in object using JavaScript

how to store arrays of data in an Object. I tried to store data using

 var namelist = [], labelDetails   = {};
 addedLabels_list.push(name);
 labedDetails_list[ownerName] = Address;

namelist holds unique names while labelDetails store data in key value pair 

Namelist :
0:"ahmad"
1:"jhon"
2: "hamza"
3: "emma"

labelDetails :
ahmad :"lahore"
jhon :"USA"
hamza :"UK"
emma :"USA, Calforina"

But when same owner name has multiple addresses it won't work. Let's say Emma live in USA, California and her second address is Washington Dc

and it replaces emma :"washington dc"

 var namelist = [], labelDetails   = {};
 addedLabels_list.push(name);
 labedDetails_list[ownerName] = Address;

Upvotes: 0

Views: 270

Answers (3)

Peter Seliger
Peter Seliger

Reputation: 13356

I would try designing a data structure that also stays stable over time, thus choosing a name based (better id based) key-value person-registry that for each person refers a single data item. This data node then is the root for all person related data that yet will come and then has to be taken care of as well ...

var personRegistry = {
  ahmad: {
    addressList: ["Lahore"]
  },
  jhon: {
    addressList: ["USA"]
  },
  hamza: {
    addressList: ["UK"]
  },
  emma: {
    addressList: ["USA, California"]
  }
}


function storeAddress(name, address) {
  var store = personRegistry[name];
  if (!store) {
    store = personRegistry[name] = {};
    store.addressList = [];
  }
  // prevent address duplicates ...
//if (!store.addressList.includes(address)) { // use that if available.
  if (store.addressList.indexOf(address) < 0) {
    store.addressList.push(address);
  }
}


console.log('personRegistry : ', personRegistry);

storeAddress("emma", 'USA, California');
storeAddress("emma", 'USA, Washington DC');
storeAddress("emma", 'USA, Washington DC');

storeAddress("susan", 'Canada, Toronto');
storeAddress("susan", 'Canada, Toronto');

console.log('personRegistry : ', personRegistry);
.as-console-wrapper { max-height: 100%!important; top: 0; }

Upvotes: 1

Harsha Jayamanna
Harsha Jayamanna

Reputation: 2258

You definitely have to make some changes to make your solution work, I would suggest,

labelDetails   = {
    "ahmad" : ["lahore"],
    "jhon" : ["USA"],
    "hamza" : ["UK"],
    "emma" : ["USA, Calforina"]
 };

labelDetails[ownerName].push("washington dc");

Upvotes: 1

Hamza Abdaoui
Hamza Abdaoui

Reputation: 2209

For arrays, the key should be unique, so in this case, you can use array to store multiple address for a the same key, this is a start : 

function myFunction(){
	var namelist = ["ahmad", "jhon", "hamza", "emma"], 
			labelDetails   = {ahmad :["lahore"], jhon :["USA"], hamza :["UK"], emma :["USA, Calforina"]};
  labelDetails["emma"].push("washington dc");
  console.log(labelDetails);
}
<button onclick="javascript:myFunction()">Click me</button>

Upvotes: 1

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