如何删除重复的李在的div使用JS?
<div id="tags"> <li id="tag">sport</li> <li id="tag">news</li> <li id="tag">sport</li> <li id="tag">sport</li> <li id="tag">cars</li> </div>
必须变成:
html javascript frontend dom
dom ×1
frontend ×1
html ×1
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