JavaScript/jQuery - Detect if input has focus
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One of my web app's page consists of a grid and a search box. I capture the keypress event to select through each of the grid's rows using the space bar. However, this creates a problem for when someone wants to look up a phrase in the search box.

I know that jQuery has a `.focus` method to bind an event handler to an input or give focus to an element. But how do I get a boolean value to determine if the search input has focus or not?