How to get the key from Array value

Question

I got a filled javascript unity array.

 var playerInventory = new Array ();

I want to find out w$$anonymous$$ch key is used for the value "item_Key". For exampl, the array is filled like t$$anonymous$$s:

[0] item_Apple
[1] item_Key
[2] item_Banana

So the value "item_Banana" uses array key 2. How can I get the key for "item_Key" in my script below?

 for (var value : String in playerInventory) {
         if(value == "item_Key"){
             print(value);
             itemKeyNumber = playerInventory[.....] //how?
         }
 }

Answer 1

Best Answer

Answer by OperationDogBird · Aug 29, 2012 at 06:32 PM

You should switch to List rather than the old, and very very slow, javascript array. List is much faster and has a ton of awesome functionalities. Unlike the builtin arrays w$$anonymous$$ch are of fixed size, List is resizable.

Heres an example of usage of List with Transforms.

 #pragma strict
 import System.Collection.Generic;
 
 public var playerInventory:List.<Transform> = new List.<Transform>();
 
 function Start()
 {
     playerInventory.Add(someTransform1);
     playerInventory.Add(someTransform2);
     playerInventory.Add(someTransform3);
     
     var index:int=playerInventory.IndexOf(someTransform2);
 
     Debug.Log("Index Of someTransform2 is "+index);
 
     // Output:  "Index Of someTransform2 is 1"
 }

There are tons of great methods for list that make working with arrays flexible. Most of the same methods that the javascript array uses are available in the list class.

Here is the reference for List .

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OperationDogBird · Aug 29, 2012 at 06:47 PM 0

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if you want to use Array, you can do this to get the index

 for(var i:int=0;i<playerInventory.Length;i++)
     if(playerInventory[i] == "item_Key")index = i;

How to get the key from Array value

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