Unexpected call to method or property access.

Ok, it must have got something to do with a method that is used on an array:


link += "&elements=" + parent.frames[1].arrElements.join("|");


After consulting Google i found several pages, and this is the most targeting link: myArray instanceof Array fails after passing to a different page.
Douglas Crockford states:

When you say ‘Array’, you are talking about ‘window.Array’. ‘window’ is the
browser’s context object, and you get one per page (or frame). All of the arrays
created within a context will have their constructor property set to
‘window.Array’.

So i assume this to be the reason why my call .join() fails.

So what would be a workaround?

I had to create a local array and copy all the elements from the original array into my local array and join this one to the link:


var joinHelper = "";
for (var i = 0, j = arrElements.length; i < j; i++) {
joinHelper += arrElements[i];
if (i < j) {
joinHelper += "|";
}
}
link += "&elements=" + joinHelper; // instead of parent.frames[1].arrElements.join("|");


… time to call it a day …

http://stackoverflow.com/questions/967372/jquery-slider-how-to-make-step-size-change/967565#967565

undefined, null or at least an empty string.

So it would be great to have a method like in C#

string.isNullOrEmpty()

This is my solution for JavaScript:

window.isNullOrEmpty = function(obj) {
return (obj === '' || obj === null || obj === undefined)
}


And the best of it: it does not only work on strings like in C#, it works for every object.

Attatching the method to the window object makes it purely available from everywhere.