Question 216887 in Javascript Question posted in
A very good W3school tutorial can be found here.

Javascript – Filter out specific values & words from array?

debug: {ping: true, query: false, srv: false, querymismatch: false, ipinsrv: false, …}

eula_blocked: false
ip: "45.146.253.38"
online: true
players: {online: 0, max: 20}
port: 2018
version: "1.20.1"

I want to filter out online: 0and max: 20using javascript.
(The array is stored in a variable and comes from an api)

EDIT: I found a way to filter the values out, but it somehow only works if I manually input my data, and not if I use the data from the variable of the API response…

const data = {
    players:{online: 0,max: 20}
}

console.log("")
console.log("players online:", data.players.online)
console.log("players max:   ", data.players.max)

This works with the const data but not with the actual variable I want to work with, altough it has the same structure. Why is that?

Tags:

2

Answers


  1. 0

    The Array.filter is going to return the elements that follows an logic, for example [1,2,3].filter(num => num < 2) will return [1] so If you want a new array with the objects that have the properties online = 0 and max = 20 you should go for:

    array.filter(item => {
  return item.players.online === 0 && item.players.max === 20;
}
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  2. 0 
    const responseData = [
  {
    debug: { ping: true, query: false, srv: false, querymismatch: false, ipinsrv: false },
    eula_blocked: false,
    ip: "45.146.253.38",
    online: true,
    players: { online: 0, max: 20 },
    port: 2018,
    version: "1.20.1",
  },
  // Add more objects here if there are multiple data points
  // {
  //   ...
  // },
];

// Extracting the 'online' and 'max' values
const playersInfo = responseData.map((data) => {
  const { online, max } = data.players;
  return { online, max };
});

console.log(playersInfo);

    Map function iterates over each element in the responseData array and extracts the online and max values from the players object of each element. It then creates a new array called playersInfo containing objects with the extracted online and max values for each data point.

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