Design help for memory limited application.

Its more of a question about how this works. I have a mobile based website, that being said the devices it targets will be limited on memory, too much and theyll crash.

I have the need for approximately 100 names and descriptions that will need to be accessible. I was thinking about making a hashmap of them to create something like:

thing("Person1", ID1)
thing("Person2", ID2)
(obviously really bad psuedocode)

But what Im asking is, would an approach like this be heavily memory consuming? If so would there be a better approach?

I know this is rather confusing I cant explain this very well but thanks for any help.

Is this for an app or a mobile website? Do you require help with Java or Javascript? HashMaps are a Java interface, which is why I am asking.

Its a mobile website with javascript, I was used HashMap in the wrong wording I just mean some sort of hashtable/dictionary/associative array type thing. Which I ended up using an associative array formatted like this.
var personArray=[
["Person1","first.png"],
["Person2","second.png"],
["Person3","third.png"],
["Person4","fourth.png"]]