随笔分类 -  es6

摘要:方法一: var arr=[1,3,1,4,2,2,1]; let result=Array.from(new Set(arr)); console.log(result); 方法二: var arr=[1,3,1,4,2,2,1]; var result=[]; arr.forEach(funct 阅读全文
posted @ 2020-03-07 14:12 墨羽如烟 阅读(107) 评论(0) 推荐(0)
摘要:方法一: var arr=[1,2,3,4,5,6]; arr.forEach((value,index)=>{ if(value>3){ arr.splice(index,value) } }) console.log(arr); 方法二: var arr=[1,2,3,4,5,6]; arr.m 阅读全文
posted @ 2018-04-02 20:50 墨羽如烟 阅读(486) 评论(0) 推荐(0)
摘要://计算数组中每个元素出现的次数 var arr = ["apple","orange","apple","orange","pear","orange"]; function getWordCnt(){ return arr.reduce(function(prev,next){ prev[nex 阅读全文
posted @ 2018-03-07 00:47 墨羽如烟 阅读(137) 评论(0) 推荐(0)