随笔分类 -  js算法

js数组深拷贝
摘要：var arr = [1, 2, [3, 4], 4, 5, 6]; var [...arr2] = arr; arr2[2] = [1992, 1598]; console.log(arr); console.log(arr2); 阅读全文
posted @ 2019-07-17 14:55 影思密达ing 阅读(703) 评论(0) 推荐(0)
js对对象数组的某一字段排序(前端网备份)
摘要：{avg1: 21, avg2: 95.2719, avg3: 0, avg4: 0, college: "经济与管理学院",},{avg1: 28, avg2: 91.2719, avg3: 0, avg4: 0, college: "经济与管理学院",},{avg1: 1, avg2: 97.2 阅读全文
posted @ 2019-06-10 13:45 影思密达ing 阅读(1521) 评论(0) 推荐(0)
处理字符串中逗号的js算法，3种（前端网备份）
摘要：<!DOCTYPE html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>111</title> </head> <bod 阅读全文
posted @ 2019-06-10 11:54 影思密达ing 阅读(992) 评论(0) 推荐(0)
二维json 遍历取值(前端网备份)
摘要：<!DOCTYPE html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>111</title> </head> <bod 阅读全文
posted @ 2019-06-10 11:53 影思密达ing 阅读(198) 评论(0) 推荐(0)
遇见的一些数据处理的解决(前端网备份)
摘要：例子1:把data1数组变成data2类型的数组data1:Array(5)0:{name: "上班", value: "1"}1:{name: "下班", value: "1"}2:{name: "迟到", value: "1"}3:{name: "早退", value: "2"}4:{name: 阅读全文
posted @ 2019-06-10 11:50 影思密达ing 阅读(117) 评论(0) 推荐(0)
一些算法案例，如一个数组里取是个随机数(前端网备份)
摘要：先来看:var arr = [1,2,3,4,5,undefined,7,8,9,10,11,12,13,14];var len = arr.length;console.log(len);console.log(arr);console.log(arr[5]);if(arr[5]){console 阅读全文
posted @ 2019-06-10 11:44 影思密达ing 阅读(190) 评论(0) 推荐(0)