Arranging objects in an array based on their specific property

Question

Arranging objects in an array based on their specific property

My DataBase collection looks like this:

var items = [{ 'Name':'Michael', 'TypeId':1 }
        { 'Name':'Max', 'TypeId':1 }
        { 'Name':'Andre', 'TypeId':1 }
        { 'Name':'Georg', 'TypeId':2 }
        { 'Name':'Greg', 'TypeId':3 }
        { 'Name':'Mitchell', 'TypeId':2 }
        { 'Name':'Ptro', 'TypeId':1 }
        { 'Name':'Helga', 'TypeId':1 }
        { 'Name':'Seruin', 'TypeId':2 }
        { 'Name':'Ann', 'TypeId':3 }
        { 'Name':'Marta', 'TypeId':2 }]

I am looking to sort these items by TypeId in ascending order.

Here is the sorted list:

var itemsSorted = [{ 'Name':'Michael', 'TypeId':1 }
        { 'Name':'Max', 'TypeId':1 }
        { 'Name':'Andre', 'TypeId':1 }
        { 'Name':'Ptro', 'TypeId':1 }
        { 'Name':'Helga', 'TypeId':1 }
        { 'Name':'Georg', 'TypeId':2 }
        { 'Name':'Mitchell', 'TypeId':2 }
        { 'Name':'Marta', 'TypeId':2 }
        { 'Name':'Seruin', 'TypeId':2 }
        { 'Name':'Greg', 'TypeId':3 }
        { 'Name':'Ann', 'TypeId':3 }

Does JavaScript have a built-in function that can sort an array of objects by a specific property?

javascript angularjs angularjs-filter

Answer 1

Answer №1

To sort your items, consider using the orderBy filter.

var itemsSorted  = $filter('orderBy')(items, 'TypeId')

For Display

ng-repeat="item in items | orderBy: 'TypeId'"

By default, the filters are in ascending order (explicitly, +TypeId), but you can use -TypeId for descending order.

Extra Information

If you need to sort by multiple properties, use an array instead of a string, like ['TypeId', 'Name']

ng-repeat="item in items | orderBy: ['TypeId', 'Name']"

There is a significant performance benefit when manually filtering inside the controller compared to filtering on the view, as it evaluates the ng-repeat expression and bindings every time the digest cycle runs. While there may not be noticeable performance issues with small collections, larger collections will have slower filtering on the view.

Answer 2

To sort your items, consider using the orderBy filter.

var itemsSorted  = $filter('orderBy')(items, 'TypeId')

For Display

ng-repeat="item in items | orderBy: 'TypeId'"

By default, the filters are in ascending order (explicitly, +TypeId), but you can use -TypeId for descending order.

Extra Information

If you need to sort by multiple properties, use an array instead of a string, like ['TypeId', 'Name']

ng-repeat="item in items | orderBy: ['TypeId', 'Name']"

There is a significant performance benefit when manually filtering inside the controller compared to filtering on the view, as it evaluates the ng-repeat expression and bindings every time the digest cycle runs. While there may not be noticeable performance issues with small collections, larger collections will have slower filtering on the view.

Answer 3

Answer №2

To achieve the desired result, you can utilize the JavaScript sort function along with the ternary operator.

var data = [{ 'Name':'Michael', 'TypeId':1 },
            { 'Name':'Max', 'TypeId':1 },
            { 'Name':'Andre', 'TypeId':1 },
            { 'Name':'Georg', 'TypeId':2 },
            { 'Name':'Greg', 'TypeId':3 },
            { 'Name':'Mitchell', 'TypeId':2 },
            { 'Name':'Ptro', 'TypeId':1 },
            { 'Name':'Helga', 'TypeId':1 },
            { 'Name':'Seruin', 'TypeId':2 },
            { 'Name':'Ann', 'TypeId':3 },
            { 'Name':'Marta', 'TypeId':2 }]
    var sortedData = data.sort(function(a,b){
     return a.TypeId >b.TypeId?1:a.TypeId <b.TypeId?-1:0
    })
    console.log(sortedData);

Example Link

Answer 4

To achieve the desired result, you can utilize the JavaScript sort function along with the ternary operator.

var data = [{ 'Name':'Michael', 'TypeId':1 },
            { 'Name':'Max', 'TypeId':1 },
            { 'Name':'Andre', 'TypeId':1 },
            { 'Name':'Georg', 'TypeId':2 },
            { 'Name':'Greg', 'TypeId':3 },
            { 'Name':'Mitchell', 'TypeId':2 },
            { 'Name':'Ptro', 'TypeId':1 },
            { 'Name':'Helga', 'TypeId':1 },
            { 'Name':'Seruin', 'TypeId':2 },
            { 'Name':'Ann', 'TypeId':3 },
            { 'Name':'Marta', 'TypeId':2 }]
    var sortedData = data.sort(function(a,b){
     return a.TypeId >b.TypeId?1:a.TypeId <b.TypeId?-1:0
    })
    console.log(sortedData);

Example Link

Answer 5

Answer №3

If you're looking to sort an array in JavaScript, you can utilize Array.prototype.sort:

var data = [{ 'Name':'Alice', 'Age':25 },
        { 'Name':'Bob', 'Age':30 },
        { 'Name':'Carla', 'Age':20 },
        { 'Name':'David', 'Age':35 },
        { 'Name':'Eve', 'Age':28 }];

data.sort(function(a, b) { return a.Age - b.Age; })

console.table(data);

document.getElementById('output').innerHTML = JSON.stringify(data, null, 4);

<pre id="output"></pre>

Answer 6

If you're looking to sort an array in JavaScript, you can utilize Array.prototype.sort:

var data = [{ 'Name':'Alice', 'Age':25 },
        { 'Name':'Bob', 'Age':30 },
        { 'Name':'Carla', 'Age':20 },
        { 'Name':'David', 'Age':35 },
        { 'Name':'Eve', 'Age':28 }];

data.sort(function(a, b) { return a.Age - b.Age; })

console.table(data);

document.getElementById('output').innerHTML = JSON.stringify(data, null, 4);

<pre id="output"></pre>

Answer 7

Answer №4

Example in a template:

<li ng-repeat="element in elements | orderBy:'TypeId'">...</li>

Usage in a controller/service:

sortedElements = $filter('orderBy')(elements, 'TypeId');

Answer 8

Example in a template:

<li ng-repeat="element in elements | orderBy:'TypeId'">...</li>

Usage in a controller/service:

sortedElements = $filter('orderBy')(elements, 'TypeId');

Arranging objects in an array based on their specific property

Answer №1

Answer №2

Answer №3

Answer №4

Similar questions

Puppeteer: Eliminate hyperlinks on webpage

Sending JSON data containing an IFormFile and a string as parameters to C#

Are you looking to receive specific and organized pages of data from DynamoDB?

I am encountering an issue with CreateJS where I receive the error message: "createjs is not defined"

Loading objects with textures in Three.js using the objloader

Using the useRef hook to target a particular input element for focus among a group of multiple inputs

A guide on arranging and styling last names in an array in alphabetical order using JavaScript!

How can I swap out the text within an anchor tag using jQuery?

"Automatically insert a new row into the table if the cell loses focus and is not left

Communication breakdown between components in Angular is causing data to not be successfully transmitted

How should a value be correctly retrieved from a separate function?

The 'split' property is not present on the 'string | number | {}' type

Node.js Multer encountering undefined req.file issue when handling multiple file uploads

Issue with Angular ui-select: only the first option in the list is being highlighted

Send functions from the back-end Node to the front-end Angular

Ways to resolve the issue of data-bs-target not functioning properly in Bootstrap version 5

A dynamic 3-column layout featuring a fluid design, with the middle div expanding based on the

Changing the row property value of a textarea dynamically based on text input in ReactJS

What is the best way to extract the date and pricing information directly from an interactive graph using Python?

JQuery draggable and JavaScript functionality become disabled following an AJAX request