To add a new pair to Hash I do: {:a => 1, :b => 2}.merge!({:c => 3})#=> {:a => 1, 开发者_如何学Python:b => 2, :c => 3}
Ok, here\'s what I\'m trying to do. I have a DIV box with a child element se开发者_Python百科t with DISPLAY: NONE;. I\'m trying to use Jquery so that when the mouse enters the parent DIV box, the chil
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