Actually, it's rather heavily dependent on Javascript as that's how most of the functionality is handled. Plus some server side is likely required to insert the

Actually, it's rather heavily dependent on Javascript as that's how most of the functionality is handled. Plus some server side is likely required to insert the raw text to be searched in the data attributes. I guess you could hand-code all that text inside numerous data attributes but different people may do things differently. Although, it is clever but rather limited.