<html>
<head>
<meta charset="utf-8">
<title>Mocha Tests</title>
<link href="https://unpkg.com/mocha@5.2.0/mocha.css" rel="stylesheet" />
</head>
<body>
<div id="mocha"></div>
<script src="https://unpkg.com/chai/chai.js"></script>
<script src="https://unpkg.com/mocha@5.2.0/mocha.js"></script>
<div></div>
</body>
</html>const arr = [
{ id: 1, name: "king" },
{ id: 2, name: "master" },
{ id: 3, name: "lisa" },
{ id: 4, name: "ion" },
{ id: 5, name: "jim" },
{ id: 6, name: "gowtham" },
{ id: 1, name: "jam" },
{ id: 1, name: "lol" },
{ id: 2, name: "kwick" },
{ id: 3, name: "april" },
{ id: 7, name: "sss" },
{ id: 8, name: "brace" },
{ id: 8, name: "peiter" },
{ id: 5, name: "hey" },
{ id: 6, name: "mkl" },
{ id: 9, name: "melast" },
{ id: 9, name: "imlast" },
{ id: 10, name: "glow" }
];
function getUnique(arr,comp){
//store the comparison values in array
const unique = arr.map(e=> e[comp]).
// store the indexes of the unique objects
map((e,i,final) =>final.indexOf(e) === i && i)
// eliminate the false indexes & return unique objects
.filter((e)=> arr[e]).map(e=>arr[e]);
return unique
}
mocha.setup('bdd');
var assert = chai.assert;
describe('Remove duplicate objects from array',()=>{
it("unique objects ",()=>{
const u = getUnique(arr,'id')
assert.deepEqual(
[
{
id: 1,
name: "king"
},
{
id: 2,
name: "master"
},
{
id: 3,
name: "lisa"
},
{
id: 4,
name: "ion"
},
{
id: 5,
name: "jim"
},
{
id: 6,
name: "gowtham"
},
{
id: 7,
name: "sss"
},
{
id: 8,
name: "brace"
},
{
id: 9,
name: "melast"
},
{
id: 10,
name: "glow"
}
],u)
})
})
mocha.run()
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