Help needed with this array manipulation task:
var arr = [{id:"1",Name:"Tom"},
{id:"2",Name:"Jon"},
{id:"3",Name:"Tom"},
{id:"4",Name:"Jack"}]
I want to extract unique Names from the above array.
var result = getUniqueNames(arr);
The final result should be:
["Tom","Jon","Jack"];
Can anyone guide me on how to achieve this task effectively?
When Set is at your disposal, you can achieve the desired outcome with ease:
new Set(arr.map(item => item.Name))
(you can convert the set to an array by passing it to Array.from)
One way to achieve this is by utilizing the Set object
const arr = [
{ id: "1", Name: "Tom" },
{ id: "2", Name: "Jon" },
{ id: "3", Name: "Tom" },
{ id: "4", Name: "Jack" }
];
const uniqueNames = [...new Set(arr.map(item => item.Name))];
console.log(uniqueNames);Alternatively, you can loop through the array and implement a condition to extract only the unique names.
const arr = [
{ id: "1", Name: "Tom" },
{ id: "2", Name: "Jon" },
{ id: "3", Name: "Tom" },
{ id: "4", Name: "Jack" }
];
const uniqueNames = arr.reduce(function(arr, item) {
if(arr.indexOf(item.Name) === -1) {
arr.push(item.Name);
}
return arr;
}, []);
console.log(uniqueNames);give this a shot
let data = [{
id: "1",
name: "Sara"
}, {
id: "2",
name: "Mike"
}, {
id: "3",
name: "Sara"
}, {
id: "4",
name: "Emma"
}]
function getUniqueNames(data) {
let uniqueArray = [];
data.forEach((item, index) => {
uniqueArray.push(item.name)
});
return uniqueArray
}
let newUniqueArray = getUniqueNames(data)
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