以行进行遍历
| const arrList = [ |
| ["100", "200", "300"], |
| ["400", "500", "600"], |
| ["700", "800", "900"], |
| ]; |
| |
| for (let i = 0; i < 3; i++) { |
| for (let j = i; j < 3; j++) { |
| console.log(arrList[i][j]); |
| } |
| } |
| console.log("---------------------"); |
| for (let i = 0; i < 3; i++) { |
| for (let j = 0; j <= i; j++) { |
| console.log(arrList[i][j]); |
| } |
| } |
| console.log("-----------------------"); |
| for (let i = 0; i < 3; i++) { |
| for (let j = 0; j < 3 - i; j++) { |
| console.log(arrList[i][j]); |
| } |
| } |
| console.log("----------------------"); |
| for (let i = 0; i < 3; i++) { |
| for (let j = 2 - i; j < 3; j++) { |
| console.log(arrList[i][j] ); |
| } |
| } |
| |
| |
以列进行遍历
| |
| const arrList = [ |
| ["100", "200", "300"], |
| ["400", "500", "600"], |
| ["700", "800", "900"], |
| ]; |
| |
| for (let j = 0; j < 3; j++) { |
| for (let i = 0; i <= j; i++) { |
| console.log(arrList[i][j]); |
| } |
| } |
| |
| console.log("------------------------"); |
| for (let j = 0; j < 3; j++) { |
| for (let i = j; i < 3; i++) { |
| console.log(arrList[i][j]); |
| } |
| } |
| |
| console.log("-----------------------------"); |
| for (let j = 0; j < 3; j++) { |
| for (let i = 0; i < 3 - j; i++) { |
| console.log(arrList[i][j]); |
| } |
| } |
| |
| console.log("----------------------"); |
| for (let j = 0; j < 3; j++) { |
| for (let i = 2 - j; i < 3; i++) { |
| console.log(arrList[i][j]); |
| } |
| } |
| |
| |
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】凌霞软件回馈社区,博客园 & 1Panel & Halo 联合会员上线
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】博客园社区专享云产品让利特惠,阿里云新客6.5折上折
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步
· 微软正式发布.NET 10 Preview 1:开启下一代开发框架新篇章
· 没有源码,如何修改代码逻辑?
· PowerShell开发游戏 · 打蜜蜂
· 在鹅厂做java开发是什么体验
· WPF到Web的无缝过渡:英雄联盟客户端的OpenSilver迁移实战
2021-10-20 vu_vue3.0LearnNote_network_network
2021-10-20 vu_vue3.0LearnNote