JavaScript无效参数

Question

I have a complex function that loops through the elements during the onSuccess: of my js and I'm getting the following error that I haven't seen before.

exception encountered : {"message": "Invalid argument.", "description": "Invalid argument.", "number": -2147024809, "name": "Error"}

The js function looks like this:

if(Object.isArray(list)){
     list.each(function(listItem, index){
         if(!Object.isUndefined(listItem.disabled)){
              listItem.disabled = disableFlag;
         }
     });
}

that is called from the onSuccess: portion of an Update. My html is a button that is calling the noted function from an onclick. When I run it the onException: always happens and I'm getting the error by:

Object.toJSON(exception)

Has anyone seen this before? I have tried playing around with the functionality and it seems that when I use the button to do what it's supposed to do after a specific sequence of events is the only time this happens. So, I placed an arbitrary link on the page and wanted to see if I clicked that, what would happen and it updated the JSON object on the page and allowed for me to use the button for it's set action without the error. Any help would be appreciated.

Answer 1

Most of the time this kind of error happens in IE when you set an attribute of a DOM element.

If listItem is DOM element then maybe it's not yet added to the document or disableFlag is an invalid value. Or the error happens outside the provided code.