How to check item ID

[DolorIpsum]

Hopefully I'm posting this in the correct forum.
My problem is that I can't find a way to check item ID to put into a variable. For my item menu, I don't have a help window. Instead I want a message window to display the information about the item after it was selected, almost like with the Select Item event command. A common event would put the item ID into a variable, and then have a conditional branch that would give different messages depending on the item selected. The only option I've seen so far is to check the number of a specific item that the player has, and that is not what I'm looking for.

 

[Jodis]

Here is the script call list for mv see if this might help you.

https://docs.google.com/spreadsheets/d/1-Oa0cRGpjC8L5JO8vdMwOaYMKO75dtfKDOetnvh7OHs/edit#gid=0

 

[Dad3353]

@DolorIpsum ...

This code should look through all items, not just those in possession...

for (var i = 0; i < $dataItems.length; i++) {
if (!!$dataItems) {
if ($dataItems.name.length > 0) {
$gameParty.gainItem($dataItems, 99);
}
}
}

... You'd change the orange part to do whatever you want, such as get the Item ID and put it into a Variable or an Array, or check the Name etc...
Any help..?