$("*")选取所有的元素

node2:/var/www/html/js#cat a24.html <ul class="test"> <div id=test>aaaa</div> <div id=test>bbbb</div> <div id=test>cccc</div> </ul > <ul clas="tlcb"> <p id=scan>eeee</p> <a id=scan>ffff</a> <p id=sca

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