html:<ul id="bursh-weight-option"> <li><div class="bw bw1" data-w='1'></div></li> <li><div class="bw bw5" data-w='5'></div></li> <li><div class="bw bw10" data-w='10'></div></li> <li><div class="bw bw20" data-w='20'></div></li> <li><div class="bw bw40" data-w='40'></div></li></ul>JS:$('#bursh-weight-option li').click(function(){ $('#bursh-weight-option').toggleClass('show');});css:#bursh-weight-select ul.show{ display: block;}//这里为什么不能直接写成这样.show{ display: block;}
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