Access to assembled html using .append

Access to assembled html using .append

I am trying to use the jquery.append function.

I am curious as to how the results of the .append activity can be viewed, particularly when there is problem with the script being used as input in the append function.

What tool or tools must I use in order to see the built html code in the DOM?

Any help/guidance on this matter will be really appreciated.

I have searched the posts, but I am not sure what keywords will zero in on the proper help.

Alastair