Typo3 - remove default target in external menu item - typo3

Question

I have the below typoscript
lib.nav = HMENU
lib.nav {
wrap = <ul> | </ul>
1 = TMENU
1 {
expAll=1
NO {
|*| <ul><li> | </li></ul> |*| <ul><li> | </li></ul> || <ul><li class="last"> | </li></ul> |*|
wrapItemAndSub = |*| <li> | </li> |*| <li> | </li> || <li class="last"> | </li> |*|
stdWrap.cObject = CASE
stdWrap.cObject {
key.field = doktype
default = TEXT
default.field = title
default.typolink.parameter.data = field:uid
default.typolink.ATagBeforeWrap=0
3 < .default
3 {
stdWrap.htmlSpecialChars = 1
typolink {
parameter {
data >
dataWrap = http://{field:url}
}
}
}
}
doNotLinkIt = 1 # to avoid "<a>" repeated twice
subst_elementUid = 1
}
}
2 = TMENU
2 {
expAll=1
wrap = <ul> | </ul>
NO {
wrapItemAndSub = |*| <li> | </li> |*| <li> | </li> || <li> | </li> |*|
stdWrap.cObject = CASE
stdWrap.cObject {
key.field = doktype
default = TEXT
default.field = title
default.typolink.parameter.data = field:uid
default.typolink.ATagBeforeWrap=0
3 < .default
3 {
stdWrap.htmlSpecialChars = 1
typolink {
parameter {
data >
dataWrap = http://{field:url}
}
}
}
}
doNotLinkIt = 1 # to avoid "<a>" repeated twice
subst_elementUid = 1
}
}
}
Which seems to work well, however I have notice a slight glitch when I have an external url page in the nav. It generates the below code for an external url.
<ul>
<li>External Links
<ul>
<li><a target="_top" href="http://example.com/1">Example 1</a></li>
<li><a target="_top" href="http://example.com/2">Example 2</a></li>
<li><a target="_top" href="http://example.com/3">Example 3</a></li>
</ul>
</li>
</ul>
How do I remove this default setting? I want it to be configurable per page in the behaviour tab (link target field in LTS 4.5).
I also have the below set in my constants.
PAGE_TARGET =
content.pageFrameObj =

Answer 1

Set in setup the extTarget via config. It is default "_top".
# just set it to an empty string instead of _top
config.extTarget =