자바스크립트 split join

자바 스크립트 String 메서드 Split , Join 사용 예

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String.prototype.split(separator, limit)

1."85@@86@@53".split("@@"); //['85', '86', '53'];

2."bannana".split(); //["banana"];

3."원,투,쓰리".split(",",2); // ["원","투"]

Array.prototype.join(separator)

배열을 스트링으로 변환 합니다.

1.["slugs","snails","puppy dog's tails"].join(' and '); //"slugs and snails and puppy dog's tails"

2.['Giants', 4, 'Rangers', 1].join(' '); //"Giants 4 Rangers 1"

3.[1962,1989,2002,2010].join(); //"1962,1989,2002,2010"

replaceAll

정규 표현식을 사용하지 않고 문자열 대체 수행 예제

1.String.prototype.replaceAll = function(find, replaceWith) {

2. return this.split(find).join(replaceWith);

3.}

4."the man and the plan".replaceAll('the','a'); //"a man and a plan"

repeat

1.String.prototype.repeat = function(times) {

2. return new Array(times+1).join(this);

3.}

4."go ".repeat(3) + "Giants!"; //"go go go Giants!"

사용 패턴

01.var getDomain = function(url) {

02. return url.split('/',3).join('/');

03.}

04.

05.getDomain("http://www.aneventapart.com/2010/seattle/slides/");

06.//"http://www.aneventapart.com"

07.getDomain("https://addons.mozilla.org/en-US/firefox/bookmarks/");

08.//"https://addons.mozilla.org"

09.

10.

11.var beheadMembers = function(arr, removeStr) {

12. var regex = RegExp("[,]?" + removeStr);

13. return arr.join().split(regex).slice(1);

14.}

15.

16.//make an array containing only the numeric portion of flight numbers

17.beheadMembers(["ba015","ba129","ba130"],"ba"); //["015","129","130"]

18.

19.var beheadMembers = function(arr, removeStr) {

20. var regex = RegExp("[,]?" + removeStr);

21. var result = arr.join().split(regex);

22. return result[0] && result || result.slice(1); //IE workaround

23.}

패턴 매치

1.var results = ['sunil','23:09','bob','22:09','carlos','mary','22:59'];

2.var badData = results.join(',').match(/[a-zA-Z]+,[a-zA-Z]+/);

3.badData; //["carlos,mary"]

01.//test 1 - using join/split

02.var arr = [], x = 1000;

03.while (x--) {arr.push("ba" + x);}

04.

05.var beheadMembers = function(arr, regex) {

06. return arr.join().split(regex).slice(1);

07.}

08.

09.var regex = RegExp("[,]?" + 'ba');

10.var timer = +new Date, y = 1000;

11.while(y--) {beheadMembers(arr,regex);};

12.+new Date - timer;

13.

14.//FF 3.6 733ms

15.//Ch 7 464ms

16.//Sa 5 701ms

17.//IE 8 1256ms

18.

19.//test 2 - using native map function

20./*

21.var arr = [], x = 1000;

22.while (x--) {arr.push("ba" + x);}

23.

24.var timer = +new Date, y = 1000;

25.while(y--) {

26. arr.map(function(e) {

27. return e.replace('ba','')

28. });

29.}

30.+new Date - timer;

31.*/

32.//FF 3.6 2051ms

33.//Cr 7 732ms

34.//Sf 5 1520ms

35.//IE 8 (Not supported)

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