Removing duplicate objects from array in JavaScript

Suppose, we have an array of objects like this −

const arr = [    {"title": "Assistant"},    {"month": "July"},    {"event": "Holiday"},    {"title": "Assistant"} ];

We are required to write a JavaScript function that takes in one such array. Our function should then return a new array that contains all the object from the original array but the duplicate ones.

Example

The code for this will be −

const arr = [    {"title": "Assistant"},    {"month": "July"},    {"event": "Holiday"},    {"title": "Assistant"} ]; const removeDuplicate = arr => {    const map = {};    for(let i = 0; i < arr.length; ){       const str = JSON.stringify(arr[i]);       if(map.hasOwnProperty(str)){          arr.splice(i, 1);          continue;       };       map[str] = true;       i++;    }; }; removeDuplicate(arr); console.log(arr);

Output

The output in the console −

[ { title: 'Assistant' }, { month: 'July' }, { event: 'Holiday' } ]