feature request -> validate against function

[Madpeterz]

it would be nice if there was support to pass in a url that then when a item is added

data-ub-tag-vaildatewith="https://siteurl.com/tags"

is called with the following args

"text"=>"user inputed text"

that would accept the following reply in json

{
"status":bool,
"text":string
}

if the status is false, the new item is not added.
if the status is true then it checks the text value if its not the same it updates the entry

notes: you would not want to enable this on a public facing page and would also want access checks
on the server side but thats not the scripts job.