Ajax :: Modification - Function To Load Text File Information From The Server

I have been successfully using the following "myAjax" function to load text file information from the server.

ajax.js:

After I load the text file, I store the text "records" into an array by doing something like this:

Where the '}' character is my record delimiter. It could just as easily be ' ' or ' ' or the like.

Again, I am not having any problems doing it this way as it suits my current needs.

Now the question(s)

1. Does the call to read the text data from the external file always read in the entire contents or can I read one line or delimited record at a time and store it to the array directly without the text storage?

2. If the text is always read completely (my suspicion), can I safely delete the "TextInformation" after I convert to the array format? Is there any memory penalty for doing it this way as the text information can be somewhat lengthly and I don't like the idea of having doubled memory usage when I only need the information in array format anyway?

This is the idea I am considering, but I don't know if there are drawback to this method of if there is a better way to accomplish the task.

ajax.js: