I defined two array utilitiy functions on a javascript file

Array.prototype.unique and Array.prototype.indexOf which i use on my application

The problem is that i have a dnn treview control and when i click the expand/collapse(+/-) it raises an error

the object doesn't support the method

the error is raised on the following piece of code

for (sKey in this.vars)

sVals += ROW_DELIMITER + sKey + COL_DELIMITER + this.vars[sKey].replace(re, QUOTE_REPLACEMENT);

in the setvar function in dnn.js file(i believe this is a modified version of the setvar function as you suggested in one of my previous posts but i believe it doesn't matter to this issue)

the problem is that in this case the sKey variable through the iteration gets the references of the functions defined by Array.prototype besides its normal strings values, so the this.vars[sKey] and sVals will have these functions bodies in their values which i believe isn't right. 

I solved this by adding the instruction

if(typeof this.vars[sKey] =='string') before adding the this.vars[sKey] value to sVals.

Thanks in advance!

Both extensions are functions:

unique returns an array with duplicate values removed and indexOf returns the index of a specific element.

If you're interested i found them on this site: http://4umi.com/web/javascript/array.htm

There are also other useful array functions and also implementations of current existent array methods with simple JavaScript code.

At this time i'm not going to extend further any base object so i'll leave the code as is. If it's going to interferes again with some script i'm going to make them simple functions not extension.

Thanks for your response!