js 正则所有a标签

var str = '<a href="/cms_files/filemanager/431831678/attach/20233/74d09820eed742dcb076df943a704747.xlsx">附件1：数据1.xlsx</a>dsfsaf345566..,.m,./..safesaf<a href="/cms_files/filemanager/431831678/attach/20233/320c2b11b91a47a8b53d4e848c356fe8.xlsx">附件2：(APP)数据.xlsx</a>addsafdsa,/,//.,,.,.dfsdf';
var reg =/<a[^>]*href=[ '"]([^"]*)[' "][^>]*>(.*?)<\/a>/g;

var arr=[];
while(reg.exec(str)!=null)
{
arr.push(RegExp.$2 + "||" + RegExp.$1); //如果是RegExp.$1那么匹配的就是href里的属性了!
}