摘要: 首先看实例 var arr=[["1","4"],["2"],["3","5","6"]]; var res=[]; //法一:使用forEach arr.forEach(function(child,index){ if(child.length>1){ res.push(index); } }) 阅读全文
posted @ 2021-10-19 15:15 RookieCoderAdu 阅读(473) 评论(0) 推荐(0)