Javascript Tagalog - String indexOf 메서드

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Ano ngaba ang String indexOf 메서드가 Javascript입니까?
Yung indexOf 메소드 sa javascript는 hahanapin niyalang yung pinakaunang 발생 ng 문자열 na binigay mo를 인수로 사용하여 재반환 값 niya yung index nung string nayon을 반환합니다.

wala siyang nakita re-return niya가 -1인 경우

tignan niyo nalang pics if hindi niyo masyado maintindihan.

파노 가미틴:
첫 번째 인수 - yung string na gusto mong kunin yung unahan niyang index

const x = 'hello my dog name is dog'

console.log( x.indexOf('my')  ) // 6
console.log( x.indexOf('o')   ) // 4
console.log( x.indexOf('cat') ) // -1

두 번째 인수(선택 사항) - kung sang index siya mag-uumpisa mag search(기본값은 yung 시작 ng 문자열인 0임)

const x = 'hello my dog name is dog'

// Searching sa 'hello my dog name is dog'
console.log( x.indexOf('hello',0) ) // 0 

// Searching sa 'ello my dog name is dog'
console.log( x.indexOf('hello',1) ) // -1

// Searching sa 'llo my dog name is dog'
console.log( x.indexOf('llo',2) ) // 2

// Searching sa 'hello my dog name is dog'
console.log( x.indexOf('llo') ) // 2

dalawa가 sino kukunin niyang index를 발생시키면?

const x = 'hello my dog name is dog'

console.log( x.indexOf('dog') ) // 9

console.log( x.lastIndexOf('dog') ) // 21

kukunin niya yung index ng pinakaunang 발생률 9,
kung gusto mo kunin yung index ng 마지막 발생 gamitin mong 방법은 lastIndexOf


baka 지나치게 단순화되고 부정확한 정보 nasulat ko 그래서 여기에 더 자세한 문서가 있습니다(영어).
MDN Documentation - String indexOf Method
더 많은 tagalog Javascript 학습 리소스:
https://javascript-in-tagalog.netlify.app