Filter an array of objects to have "unique" objects with respect some of their properties. Uses new Map from ES6.

filterListObjects.js

// Data
let data = [
  {
    name: 'John',
    SSID: 1
  },
  {
    name: 'John',
    SSID: 2
  },
  {
    name: 'Doe',
    SSID: 1
  },
  {
    name: 'James',
    SSID: 1
  },
  {
    name: 'Clerk',
    SSID: 2
  },
  {
    name: 'Maxwell',
    SSID: 1
  },
  {
    name: 'Maxwell',
    SSID: 2
  },
];

// Print original data
console.log(data);

// Use Map (ES6) to retain only unique elements
let map = new Map();
for (element of data) {
  map.set(element.name, element);
}

var filteredData = [];
map.forEach( (value, key, map) => {
  filteredData.push(value);
});

// Print filtered data
console.log(filteredData);