How do I change the array index in javascript (not the value)

Question

I need to change the index value in javascript

let say

var fruits = ["Banana", "Orange", "Apple", "Mango"];

with index 0-banana,1-Orange,2-Apple,3-Mango

What I want is to change these index values say 345-Banana,346-Orange,347-Apple, 348-Mango .

let me know if there is any quick way to do it , it will reduce some of my conversion code .. Otherwise I have to keep track of index (0,1,2,3) to values(345,346...)

I will store index value in my db, array value is just to display on UI (just like select box)

You're sure an object wouldn't be more suitable than an array for that ? — adeneo
– adeneo, Commented Mar 28, 2014 at 6:08
I m using some third party tool for UI ,that method takes only array and array index sets as the value to input field . So Just I thought if changing index so everything falls into place — ULLAS K
– ULLAS K, Commented Mar 28, 2014 at 6:11

Deepu--Java · Accepted Answer · 2014-03-28 06:21:11Z

2

So why are you using Array. Use Map and give any custom key(index) value.

var map = new Object(); // or var map = {};
map[myKey1] = myObj1;
map[myKey2] = myObj2;

function get(k) {
    return map[k];
}

Or if not want to use Map, don't change the index just set the value of input field by

<input type="" value="<any base value like 350>+index"/>

I think this can help.

edited Mar 28, 2014 at 6:21

answered Mar 28, 2014 at 6:15

Deepu--Java

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3 Comments

ULLAS K Over a year ago

I m using some third party tool for UI ,that method takes only array and array index sets as the value to input field . So Just I thought if changing index so everything falls into place

Deepu--Java Over a year ago

@ULLASK I think you wrote comment in wrong answer. According to my answer, you don't have to change the array index just customize the value field of input element.(see the answer)

ULLAS K Over a year ago

ya ya by mistake I put that comment ..I removed it now

Tuhin · Accepted Answer · 2014-03-28 06:31:17Z

1

you need to use associative array.

var fruits= new Array();
fruits['345'] = 'banana';
fruits['346'] = 'Orange';
fruits['347'] = 'Apple';
fruits['348'] = 'Mango'; 

for (var i in fruits) {
    alert('index is: ' + i + ', value is: ' + fruits[i]);
}

answered Mar 28, 2014 at 6:31

Tuhin

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Comments

Kpatel1989 · Accepted Answer · 2014-03-28 06:36:41Z

0

use enum like :

var fruits = { 345 : "Banana", 346 : "Orange",347 : "Apple", 348 : "Mango"};

console.log(fruits[345]);

answered Mar 28, 2014 at 6:36

Kpatel1989

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Comments

Khaydarov Marufjon · Accepted Answer · 2023-09-26 10:35:05Z

0

Give the Fruits array a starting index

let fruits = new Array();
fruits[345] = "banana";   // initial index
fruits.push("orange" , "apple" , "mango")
console.log(fruits[346]); // orange

answered Sep 26, 2023 at 10:35

Khaydarov Marufjon

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