Array Re arrange in React js

Question

I have some array objects for listing.

based on the list, if the user clicks the particular list item from the objects,

need to show the particular clicked list item as first.

var list = [
 {
  tradeareaid: "80"
  tradeareaname: "test1"
 },
 { 
  tradeareaid: "81"
  tradeareaname: "test2"
 },
 { 
  tradeareaid: "82"
  tradeareaname: "test3"
 },
 { 
  tradeareaid: "83"
  tradeareaname: "test4"
 },
 { 
  tradeareaid: "84"
  tradeareaname: "test5"
 },
]

in the list If I selected trade area 83 means I needed the list like below

var list = [
 { 
  tradeareaid: "83"
  tradeareaname: "test4"
 },
 {
  tradeareaid: "80"
  tradeareaname: "test1"
 },
 { 
  tradeareaid: "81"
  tradeareaname: "test2"
 },
 { 
  tradeareaid: "82"
  tradeareaname: "test3"
 },
 { 
  tradeareaid: "84"
  tradeareaname: "test5"
 },
]

How to achieve this?

Hemant Parashar · Accepted Answer · 2021-02-17 07:33:20Z

1

You can get the tradeareaid of the item which is clicked and use the getSortedList function (in a click event handler) to get the new list something like this :

var list = [
 {
  tradeareaid: "80",
  tradeareaname: "test1"
 },
 { 
  tradeareaid: "81",
  tradeareaname: "test2"
 },
 { 
  tradeareaid: "82",
  tradeareaname: "test3"
 },
 { 
  tradeareaid: "83",
  tradeareaname: "test4"
 },
 { 
  tradeareaid: "84",
  tradeareaname: "test5"
 },
]

function getSortedList(id){
  const clickedItem = list.find(item=>item.tradeareaid===id)
  const filterdList = list.filter(item=>item.tradeareaid!==id)
  return [clickedItem,...filterdList]
}
const sortedList = getSortedList(list[3].tradeareaid)
console.log({sortedList})

answered Feb 17, 2021 at 7:33

Hemant Parashar

3,7842 gold badges18 silver badges23 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

prasanth · Accepted Answer · 2021-02-17 07:32:52Z

1

You need to set some key for sort onclick

var list = [ { tradeareaid: "80", tradeareaname: "test1" }, { tradeareaid: "81", tradeareaname: "test2" }, { tradeareaid: "82", tradeareaname: "test3" }, { tradeareaid: "83", tradeareaname: "test4" }, { tradeareaid: "84", tradeareaname: "test5" }, ]

//if test4 was clicked 

clicked = 3; // index
list.forEach((a, b) => {
  list[b]['key'] = b;
  if (b == clicked) {
    list[b]['key'] = -1;
  }
})

console.log(list.sort((a, b) => a.key - b.key))

answered Feb 17, 2021 at 7:32

prasanth

22.6k4 gold badges33 silver badges57 bronze badges

Collectives™ on Stack Overflow

Array Re arrange in React js

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related