Verifying the similarity of usernames using a JSON array

My attempts to create a function that verifies if app.account_username matches a username in a json array are just leading me in circles.

This is how the json array is structured

{
 "data": {
"id": 32607158,
"with_account": "user1",
"with_account_id": 8483786,
"last_message_preview": "XD",
"message_count": 289,
"messages": [{
  "id": 153359194,
  "from": "user1",
  "account_id": 20094939,
  "sender_id": 8483786,
  "body": "*hugs*",
  "conversation_id": 32607158,
  "datetime": 1439711004
}, {
  "id": 153359270,
  "from": "user2",
  "account_id": 20094939,
  "sender_id": 20094939,
  "body": "*hugs*",
  "conversation_id": 32607158,
  "datetime": 1439711023
}, {
  "id": 153359330,
  "from": "user1",
  "account_id": 20094939,
  "sender_id": 8483786,
  "body": "*hugs*",
  "conversation_id": 32607158,
  "datetime": 1439711044
}, {
  "id": 153359334,
  "from": "user2",
  "account_id": 20094939,
  "sender_id": 20094939,
  "body": "*hugs*",
  "conversation_id": 32607158,
  "datetime": 1439711048
}, {
  "id": 153359386,
  "from": "user1",
  "account_id": 20094939,
  "sender_id": 8483786,
  "body": "*hugs*",
  "conversation_id": 32607158,
  "datetime": 1439711057
}, {
  "id": 153359430,
  "from": "user2",
  "account_id": 20094939,
  "sender_id": 20094939,
  "body": "*hugs*",
  "conversation_id": 32607158,
  "datetime": 1439711065
}, {
  "id": 153359474,
  "from": "user1",
  "account_id": 20094939,
  "sender_id": 8483786,
  "body": "*hugs*",
  "conversation_id": 32607158,
  "datetime": 1439711078
}, {
  "id": 153359522,
  "from": "user2",
  "account_id": 20094939,
  "sender_id": 20094939,
  "body": "*hugs*",
  "conversation_id": 32607158,
  "datetime": 1439711090
}, {
  "id": 153359638,
  "from": "user2",
  "account_id": 20094939,
  "sender_id": 8483786,
  "body": "*hugs*",
  "conversation_id": 32607158,
  "datetime": 1439711106
}],
"done": false,
"page": 2,
"datetime": 1439711387
},
"success": true,
"status": 200
}

I'm attempting to compare "from" with "app.account_username", but I could use some guidance on how to accomplish this. Does anyone have any ideas?

javascriptarraysjson

Answer №1

To convert this json string into an object and cycle through its array to validate each element against app.account_username

let jsonData = '{ "data": { "id": 32607158, "with_account": "user1", "with_account_id": 8483786, "last_message_preview": "XD", "message_count": 289, "messages": [{ "id": 153359194, "from": "user1", "account_id": 20094939, "sender_id": 8483786, "body": "*hugs*", "conversation_id": 32607158, "datetime": 1439711004 }, { "id": 153359270, "from": "user2", "account_id": 20094939, "sender_id": 20094939, "body": "*hugs*", "conversation_id": 32607158, "datetime": 1439711023 }, { "id": 153359330, "from": "user1", "account_id": 20094939, "sender_id": 8483786, "body": "*hugs*", "conversation_id": 32607158, "datetime": 1439711044 }, { "id": 153359334, "from": "user2", "account_id": 20094939, "sender_id": 20094939, "body": "*hugs*", "conversation_id": 32607158, "datetime": 1439711048 }, { "id": 153359386, "from": "user1", "account_id": 20094939, "sender_id": 8483786, "body": "*hugs*", "conversation_id": 32607158, "datetime": 1439711057 }, { "id": 153359430, "from": "user2", "account_id": 20094939, "sender_id": 20094939, "body": "*hugs*", "conversation_id": 32607158, "datetime": 1439711065 }, { "id": 153359474, "from": "user1", "account_id": 20094939, "sender_id": 8483786,...
    
let objData = JSON.parse( jsonData );
        
for (let index = 0; index < objData.data.messages.length; index++) 
{
    if(objData.data.messages[index].from == app.account_username)
        {
            doSomething();
            break;
        }
}

Answer №2

Take a look at this interesting jsfiddle here

It showcases the display of user1 and user2 in a unique way.

var sample = "your json information"
    for(var j=0;j<5;j++)
alert(JSON.stringify(sample.data.messages[j].from));

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