javascript - How can i import only discord from JSON file?

Question

I've got an array of objects, these objects have an identifiers array with strings. One of these strings contains a Discord ID. The problem is its position is changing all the time, so I can't use the 4th identifier for example.

I only need the discord property.

I tried many things. I think it should be something like only "discord" property, but I have no idea how to solve that and code that up. Click on image to see more. There's json file there. It's all about ${players[i].identifiers[4]

const updateMessage = function() {
    getVars().then((vars) => {
      getPlayers().then((players) => {
        if (players.length !== LAST_COUNT) log(LOG_LEVELS.INFO,`${players.length} graczy`);
        let queue = vars['Queue'];
        let embed = UpdateEmbed()
        .addField('Status serwera','<:tak:847199217063297056> Online',true)
        .addField('W kolejce',queue === 'Enabled' || queue === undefined ? '0' : queue.split(':')[1].trim(),true)
        .addField('Graczy online',`${players.length}/${MAX_PLAYERS}
u200b
`,true);
        // .addField('u200b','u200b
u200b
',true);
        if (players.length > 0) {
          // method D
          const fieldCount = 3;
          const fields = new Array(fieldCount);
         fields.fill('');
          // for (var i=0;i<players.length;i++) {
          //   fields[i%4 >= 2 ? 1 : 0] += `${players[i].name}${i % 2 === 0 ? 'u200e' : '
u200f'}`;
          // }
          
          fields[0] = `**Mieszkańcy na wyspie:**
`;
          for (var i=0;i<players.length;i++) {
            
            fields[(i+1)%fieldCount] += `${players[i].name} [${players[i].id}], ${players[i].identifiers[4]}`; 
          }
          for (var i=0;i<fields.length;i++) {
            let field = fields[i];
            if (field.length > 0) embed.addField('u200b',`
${fields[i]}`, true);
          }

        
        }
        sendOrUpdate(embed);
        LAST_COUNT = players.length;
      }).catch(offline);
    }).catch(offline);
    TICK_N++;
    if (TICK_N >= TICK_MAX) {
      TICK_N = 0;
    }
    for (var i=0;i<loop_callbacks.length;i++) {
      let callback = loop_callbacks.pop(0);
      callback();
    }
  };

Answer 1

If I understand you correctly, you want to get the element from the identifiers array, but its position is not fixed, it can be anywhere.

Luckily, the element always start with the word 'discord', so you can use Array#find() with String#startsWith() to find your discord ID. Check out the snippet below:

let players = [{
  id: 1,
  identifiers: ["license:57349756783645", "xbl:85437852", "live:8953291341", "discord:89325813521519", "fivem:893123"],
  name: "foo",
  ping: 56
}, {
  id: 2,
  identifiers: ["xbl:57420987", "live:09123489", "discord:86543932136453", "license:865496782134", "fivem:584723"],
  name: "bar",
  ping: 41
}, {
  id: 3,
  identifiers: ["live:99532945", "discord:80521578413532", "license:60795634523", "xbl:1239435", "fivem:943921"],
  name: "bar",
  ping: 41
}]

players.forEach(player => {
  let discord = player.identifiers.find(i => i.startsWith('discord')).replace('discord:', '')
  console.log(`
  ID: ${player.id}
  Name: ${player.name}
  Discord: ${discord}
  `)
})