No Pre-loading
The content behind this drop-down won't start loading until it is hovered over.
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Hover over me
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Drop-down
On this one, the supporting elements will be delayed.
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Hover over each of the buttons below and notice the slight difference in load time.
Remember to empty your cache each time you want to see the effect.
The content behind this drop-down won't start loading until it is hovered over.
On this one, the supporting elements will be delayed.
The content behind this drop-down has been pre-loaded, so should appear instantly on hover.
This one's much more responsive. Nice, right?