jquery when the mouse passes through the highlight, while the other sibling elements darken the effect _jquery

The example in this article describes the effect of jquery when the mouse is passed, while other sibling elements are dimmed. Share to everyone for your reference, specific as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">  

The Operation effect chart is as follows:

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I hope this article will help you with the jquery program design.