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operator |
previous is |
Return type: Switch
Returns: True if the previous element has the specified name.
Syntax
previous element-qualifier* (is | isnt) (element-name | element-name-list)
A test that succeeds if the previous sibling element has the specified element name. Otherwise, it fails (and
returns false). It also fails if the qualified element is not the first subelement of its parent. Replacing
is
with isnt
will reverse the results.
For example, the following "do...done" block uses a previous is
test, and the actions within the
block (not shown here) will only be executed if the current element follows a paragraph (par) element:
do when previous is "par" ... done
The previous is
test ignores inclusions and data content.
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