Question

How to remove duplicates from array of objects in JavaScript

Answer 1

let array_obj = [
    { name: 'Matrix', age: 58, language: "JavaScript" },
    { name: 'Matrix', age: 58, language: "JavaScript" },
    { name: 'R2D2', age: 90, language: "c" },
    { name: 'R2D2', age: 90, language: "c" },
    { name: 'Machina', age: 49, language: "c++" },
];
 
const uniqueArr = [];

array_obj = array_obj.filter(element => {
  	const isDuplicate = uniqueArr.includes(element.name);

  	if (!isDuplicate) {
    		uniqueArr.push(element.name);

    		return true;
  	}

  return false;
});


console.log(array_obj);
    
    
    
    
/*
run:
    
[{
  age: 58,
  language: "JavaScript",
  name: "Matrix"
}, {
  age: 90,
  language: "c",
  name: "R2D2"
}, {
  age: 49,
  language: "c++",
  name: "Machina"
}]
    
*/

 

70+ SQL courses for beginners and professionals