When creating an htmlTree object, the software automatically
restructures malformed input HTML code to have valid structure. This restructuring process
includes adding, removing, and editing elements as well as rearranging the tree structure.
Starting in R2021a, the software uses an updated algorithm to restructure malformed HTML.
This change can result in htmlTree objects created in R2021a or later
having different size, structure, and content when compared to previous releases.
Starting in R2021a, when loading htmlTree objects from MAT files
created in an R2020b or before, the software automatically restructures the
htmlTree object using the same algorithm used for creating
htmlTree objects. When loading htmlTree objects from MAT
files created in R2021a or later, the software does not restructure the
htmlTree object.
This table highlights some notable steps of the restructuring process:
| Step | Change in Behavior |
|---|
| Automatically add head and title elements. | Starting in R2021a, when creating an htmlTree object
from HTML code, the software automatically inserts missing
<HEAD>, <TITLE>, and other
elements. In previous versions, the htmlTree object only
included these elements when they are present in the input
code. When loading htmlTree objects from MAT files
created in an earlier release, the software automatically inserts
<HEAD> and <TITLE> elements. When
loading htmlTree objects from MAT files created in R2021a or
later, the software does not automatically insert these elements. |
| Automatically add missing elements. | Starting in R2021a, when creating an htmlTree object
from HTML code, the software automatically inserts missing elements when parent
and child elements are inconsistent. For example, when a
<li> (list item) element does not have a parent
<ul> (unordered list) or <ol>
(ordered list) element, the software automatically adds a
<ul> element to make the HTML valid. This can result in
different outputs when compared with earlier releases. When loading
htmlTree objects from MAT files created in an earlier
release, the software automatically inserts missing elements. When loading
htmlTree objects from MAT files created in R2021a or later,
the software does not automatically insert missing elements. |
| Discard parts of malformed code. | When creating an htmlTree object with malformed HTML
code, the software may discard parts of the text. For example, if the input code
is the string "<div>a</", then the software discards
the text "a</". |
