js split正则

Question

 求解我用字表达式      var data="asdfasdf<span>aa</span>asdfasdf"        var regValue=/(<span\s?[^\>]*>.*?<\/span>)/gi             var data= data.split(regValue)可以切割成["asdfasdf"，"<span>aa</span>","asdfasdf"]  的效果不用（）就不行 为什么 

Answer 1

我试了一下，发现 加不加括号都只能分割成["asdfasdf","asdfasdf"]