JS 陣列排序範例
馬老師離開待了約十幾年的教學界,目前在外商科技公司擔任Senior Consultant的工作,原因當然很多,未來有空再慢慢發文章分享,剛好最近有點時間,怕以後忘記,把最近專案中用到的一些程式筆記下來,如果大家有需要,也可以參考使用,這一篇是關於Javascript陣列排序的部分。
通常若有較多的內容需要儲存,變數就沒有陣列來的好用,所以陣列是拿來儲存大量的資料時所使用的,且儲存在裡面的資料,還可以選擇經過排序之後再呈現至畫面上,例如:
var name = ["stanley", "jack", "anita" , "mary"]; name.sort() //依照字母排序 console.log(name); // 輸出 ["anita", "jack", "mary", "stanley"] names.reverse() //反轉陣列內容 console.log(name); //輸出 ["stanley", "mary", "jack", "anita"]
但若我們同時有多個陣列,但希望以其中之一的內容排序時,也可以同步更新到另外一個陣列,該如何處理呢?可以參考以下的方式:
var name = ["stanley", "jack", "anita" , "mary"]; var gender = ["male" , "male" , "female" , "female"]; var score = [30, 10, 40 , 80]; var ID = ["S1" , "S2" , "S3" , "S4"]; console.log("name : " + name + "; score : " + score + "; gender : " + gender + "; ID : " + ID); /* 排序前 name : stanley,jack,anita,mary; score : 30,10,40,80; gender : male,male,female,female; ID : S1,S2,S3,S4; */ var list = []; for (var i = 0; i < name.length; i++){ list.push({ 'name': name[i], 'score': score[i], 'gender': gender[i], 'ID': ID[i] }); } list.sort(function(a, b) { return ((a.name < b.name) ? -1 : ((a.name == b.name) ? 0 : 1)); }); for (var i = 0; i < list.length; i++) { name[i] = list[i].name; score[i] = list[i].score; gender[i] = list[i].gender; ID[i] = list[i].ID; } console.log("name : " + name + "; score : " + score + "; gender : " + gender + "; ID : " + ID); /* 排序後 name : anita,jack,mary,stanley; score : 40,10,80,30; gender : female,male,female,male; ID : S3,S2,S4,S1; */
若是希望按照分數排序,則可以將sort function 修改為下:
//score 由小到大 list.sort(function(a, b) { return a.score - b.score }); //score 由大到小 list.sort(function(a, b) { return b.score - a.score });
補充:
上述的排序內容均以英文和數字為主,若是遇到中文可使用localeCompare進行,而排序的方式是漢語拼音順序,以下為範例:
var arr = ["二","五","四","一","三"]; //漢語拼音:一[yi], 二[er], 三[san], 四[si], 五[wu] console.log("排序前:" + arr); // 排序前:二,五,四,一,三 arr.sort(function(a,b){ return a.localeCompare(b, 'zh'); //排序後:二,三,四,五,一 }); console.log("排序後:" + arr); var arr = ["中文","英語","法國話", "京片子", "中國"]; //中文[zhong wen], 英語[ying yu], 法國話[fa guo hua], 京片子[jing pian zi], 中國[zhong guo] console.log("排序前:" + arr); //排序前:中文,英語,法國話,京片子,中國 arr.sort(function(a,b){ return a.localeCompare(b, 'zh'); }); console.log("排序後:" + arr); //排序後:法國話,京片子,英語,中國,中文 var arr = ["中文","英语","法国话", "京片子", "中国"]; console.log("排序前:" + arr); //排序前:中文,英语,法国话,京片子,中国 arr.sort(function(a,b){ return a.localeCompare(b, 'zh'); }); console.log("排序後:" + arr); //排序後:法国话,京片子,英语,中国,中文
generic for levaquin
purchase finasteride for sale – fluconazole 100mg tablet order ciprofloxacin 1000mg
Great blog right here! You seem to put a significant amount of material on the site rather quickly.
https://erectionpills.best/# best ed pills online
ivermectin horses stromectol ivermectin 3 mg what parasite medicine contains ivermectin what parasite medicine contains ivermectin
prednisone injection prednisone 5093 prednisone long term side effects how long until prednisone starts to work for my dog?
ciprofloxacin order online cipro
pain meds online without doctor prescription best canadian pharmacy online
Nice blog. Could someone with little experience do it, and add updates without messing it up? Good information on here, very informative.
A cool post there mate ! Thank you for posting.
antibiotics cipro buy generic ciprofloxacin
cost of neurontin 600 mg neurontin 50mg tablets
https://erectionpills.best/# over the counter erectile dysfunction pills
https://withoutprescription.store/# carprofen without vet prescription
diflucan 200mg diflucan prescription cost
money party slots
slots games free
casino slot free