Error while finding object's index in an array

Question

I've an array with some properties. When I try to find an object's index I'm getting error TypeError: Error #1009. I'm using Flash CS6.

Here's my array:

var squareArr:Object  = {
     a1: {
          piece: wr1_txt,
          pieceLoc: {  
            x: "-3",
            y: "347"
          }
     },
     b1: {
          piece: wn1_txt,
          pieceLoc: {  
            x: "47",
            y: "347"
          }
     },
...

Below code is giving me error #1009 while I want it to return a1:

trace (squareArr.indexOf(wr1_txt));

Vesper · Accepted Answer · 2014-05-27 14:57:02Z

2

You can't indexOf() of an Object, you should instead do a property lookup cycle.

var s:String;
var found:Boolean=false;
for (s in squareArr) {
    if (squareArr[s].piece == wr1_txt) { // YAY found it
        found=true;
        break;
    }
}
if (found) trace(s); else trace("Not found!");

And the s will be your index.

Of course, don't forget to parse for errors, if your target is not found, you should not say the last index is what contais target.

edited May 27, 2014 at 14:57

answered May 27, 2014 at 13:34

Vesper

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4 Comments

nikel Over a year ago

thanks for the answer and sorry for my english. I couldn't understand "if your target is not found, you should not say the last index is what contais target". trace(s) outputs nothing.

Vesper Over a year ago

Hmm, then declare the var not in the cycle but before it, so that the variable will still be accessible after cycling.

nikel Over a year ago

but now says Not found! trace(wr1_txt); // outputs [object TextField]

Panzercrisis Over a year ago

ActionScript 3.0 uses variable hoisting, so it doesn't matter if he declares a var inside or outside of a for loop; it still compiles as though it's declared at the beginning of the function.

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