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Instant Previews: Under the hood

Nov 15, 2010, 20:32 (2 Talkback[s])

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"If you've used Google Search recently, you may have noticed a new feature that we're calling Instant Previews. By clicking on the (sprited) magnifying glass icon next to a search result you see a preview of that page, often with the relevant content highlighted. Once activated, you can mouse over the rest of the results and quickly (instantly!) see previews of those search results, too.

"Adding this feature to Google Search involved a lot of client-side Javascript. Being Google, we had to make sure we could deliver this feature without slowing down the page. We know our users want their results fast. So we thought we'd share some techniques involved in making this new feature fast."

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