What is the most efficient way to delete a specific object from an array and move it to the beginning?
I have attempted using regular methods such as finding the index, manually splicing, and then moving the object to the top.
farmer: [
{
id:1,
name: "name 1"
},
{
id:2,
name: "name 2"
},
{
id:3,
name: "name 3"
}
]
If I choose the farmer with id: 2, I want to relocate it to the top.
const index = heroes.findIndex(hero => hero.id === 4)
heroes.unshift(heroes.splice(index,1)[0])To manipulate an array using JavaScript, you can utilize the Array.reduce() method along with the Array.unshift() and Array.push() functions as demonstrated in the following example:
var farmer = [
{id: 1, name: "name 1"},
{id: 2, name: "name 2"},
{id: 3, name: "name 3"}
];
var searchedId = 2;
var result = farmer.reduce(function(carry, item) {
if (item.id === searchedId) {
carry.unshift(item);
} else {
carry.push(item);
}
return carry;
}, []);
console.log(result);When it comes to working with the JavaScript standard library, one common practice involves finding an element by its id, extracting it, and then inserting it into a new position.
let myArray = [{
id: 1
}, {
id: 2
}, {
id: 3
}]
function moveItemById (array, id, position) {
let elementIndex = array.findIndex((el) => {
return el.id === id
})
if (!elementIndex) {
return
}
array.splice(position, 0, array.splice(elementIndex, 1)[0])
}
moveItemById(myArray, 2, 0)Here's the code snippet you requested:
var farmer = [
{
id: 1,
name: "name 1"
},
{
id: 2,
name: "name 2"
},
{
id: 3,
name: "name 3"
}
]
farmerNew = farmer.filter(item => item.id !== 2);
selectedFarmer = farmer.filter(item => item.id === 2)[0];
farmerNew.unshift(selectedFarmer);
farmer = farmerNew
console.log(farmer)After exporting a model from Blender to Three.js, the resulting file contains JSON data. There are two methods I know of for loading this model: var loader = new THREE.JSONLoader() var material = new THREE.MeshPhongMaterial({color: '#8080a0'}) ...
Recently, I created a custom tooltip for my chart.js chart by implementing a div that moves above the chart. While it works well, I noticed that the tooltip is capturing mouse events rather than propagating them to the parent element (the chart) for updati ...
An issue has arisen where the ads on a website are currently being displayed at the bottom of the source code, but they should actually be visible at the top. Here is the ad placeholder code: <div id="300_250_placeholder"></div> And here is ...
Here is an example of a calculator app created using HTML and Javascript. Upon running the program with nodemon and accessing localhost:3000, pressing the submit button triggers an error on Google Chrome. [nodemon] starting `node calculator.js` Server sta ...
Within a div, I have three textboxes and am looking for a way to trigger an event when focus leaves one of these inputs without transitioning to another one of the three. If the user is editing any of the three controls, the event should not be triggered. ...
I am working with a Gruntfile that looks like this: grunt.initConfig({ imagemin: { dynamic: { files: [ src: ['lib/public/img/*.{png,jpg,jpeg,gif}'], dst: 'build/public/img/', expand: true, fl ...
I am creating a new object with specific properties. I need to ensure that an error is triggered if the user attempts to retrieve a property that doesn't actually exist. Is there a way to achieve this in my code? ...
Within my JavaScript code, I am working with the following array: var versions = [{"id":"454","name":"jack"}, {"id":"4","name":"rose"} {"id":"6","name":"ikma"} {"id":"5","name":"naki"} {"id":"667","name":"dasi"} ] I need to extract the name from this ar ...
I have a specific partial which is a report - simply a static list of names and dates designed for viewing and printing purposes. For efficiency reasons, the report is rendered server-side, so when a report request is made, my API responds with HTML rathe ...
My challenge lies in loading Chinese characters as keys and their English translations as values from a database into a PHP array, so that I can use them on the client side in JavaScript. The process involves fetching key:value pairs from PHP into a JavaSc ...
Currently, I am developing a website using the MERN stack and implementing JWT for authentication. My goal is to store JWT tokens in cookies. Despite invoking the res.cookie function with specified parameters (refer to the code below), I am facing difficul ...
Regular Expression: /@([\S]*?(?=\s)(?!\. ))/g Given String: 'this string has @var.thing.me two strings to be @var. replaced'.replace(/@([\S]*?(?=\s)(?!\. ))/g,function(){return '7';}) Expected Result: ...
Here is the link to my JS Fiddle: http://jsfiddle.net/m4tyC/ I am working with multiple select tags and need to validate them upon submission. For example, at least one of size1, color1, or Qty1 must be selected in the first group. If one item is selected ...
I am currently experimenting with the Materializecss Image Slider. My goal is to have a fixed full-screen background image while the texts and images slide over it. Initially, I tried setting the background-color of the slider class as transparent, but un ...
I am currently working on expanding the MUI palette to include my own custom properties. Here is the code I have been using: declare module '@mui/material/styles' { interface Palette { border: Palette['primary'] background: Pa ...
Presented below is the service I offer: angular.module('LBTable').service('exportTable', function () { function JSONToCSVConvertor(JSONData, ReportTitle, ShowLabel, fileName) { //If JSONData isn't an object, parse the ...
<?php $images =[]; $imagesArrays = []; //Querying the database for image galleries $loop = new WP_Query( array( 'post_type' => 'gallery', 'posts_per_page' => 100 ) ); while ( $loop->have_po ...
Is there a way in Next.js to create individual pages for each object in an array with unique URLs? Here is the input array: Input Array const products = [ { url: "item-1", id: 1, name: "Item 1", description: "lor ...
Currently, my webpage contains numerous anchor tags that link to various video files, along with a single div element: <a href="http://www.example.com/example-1.mkv" class="video">1</a> <a href="http://www.example.com/example-2.mkv" class=" ...
I am looking for my code editor to automatically determine the type of extraData based on the value of error, which is being narrowed down by an if statement: export enum ErrorCodes { Unknown = 'UNKWN', BadRequest = 'BDREQ', } int ...