How to alter a regex to be non-greedy (JS)

I'm trying to replace var tags with an attribute so they are wrapped in square brackets

data.replace(/<var .*?="">(d+)</var>/ig, '[[[$1]]]');

but this will not work if there are multiple var tags. For example,

<var id-0=""></var> responds <span id-1="">in <var num="">1</var> days</span>

will result in

[[[1]]] days</span>

but the result I need is

<var id-0=""></var> responds <span id-1="">in [[[1]]] days</span></strong>