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js問題不會做了求助

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js問題不會做了求助

JavaScript

喵喵時光機 2018-10-20 11:10:02

var arr = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];var sarr = [4,10,18];想得到5-9 11-17 19-最后想得到result 數組 var result = ["fghij","lmnopqr","tuvwxyz"];sarr可能的值sarr = [20] 得到21-最后 var result = ["vwxyz"];sarr = [20,24] 得到21-23 25-最后 var result = ["vwx","z"];求助js該怎么寫

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1 回答

素胚勾勒不出你

TA貢獻1827條經驗獲得超9個贊

var arr = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

var sarr = [4,10,18], result = []

for(var i = 0, l = sarr.length; i<l ; i++){

sarr[i+1] = sarr[i+1] ? sarr[i+1] : arr.length

result[i] = arr.slice(sarr[i]+1,sarr[i+1]).join('')

}

console.log(result)

反對回復 2018-11-07

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js問題不會做了 求助

js問題不會做了 求助

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js問題不會做了求助

js問題不會做了求助