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JavaScript 배열 some()

실시예 1

18보다 큰 값이 있는지 확인하십시오.

const ages = [3, 10, 18, 20];

ages.some(checkAdult);
function checkAdult(age) {
  return age > 18;
}

정의 및 사용

some()메서드는 배열 요소가 테스트(함수로 제공)를 통과하는지 확인합니다.

some()메서드는 각 배열 요소에 대해 한 번 함수를 실행합니다.

  • 함수가 truesome()반환하면 true를 반환하고 중지합니다.
  • 함수가 falsesome()반환하면 false를 반환하고 중지합니다.

메서드 는 some()빈 배열 요소에 대해 함수를 실행하지 않습니다.

some()방법은 원래 배열을 변경하지 않습니다.


통사론

array.some(function(value, index, arr), this)

매개변수

Parameter Description
function Required.
A function to run for each array element.
Function parameters:
value Required.
The value of the current element.
index Optional.
The index of the current element.
arr Optional.
The array the current element belongs to.
this Optional. Default undefined.
A value passed to the function to be used as its "this" value.

반환 값

유형 설명
참이나 거짓 true배열 요소 중 하나라도 테스트를 통과하면 그렇지 않으면 false.


브라우저 지원

some()ECMAScript3(ES3) 기능입니다.

ES3(JavaScript 1999)는 모든 브라우저에서 완벽하게 지원됩니다.

Chrome IE Edge Firefox Safari Opera
Yes Yes Yes Yes Yes Yes

실시예 2

<p>Input: <input type="number" id="toCheck" value="15"></p>

<button onclick="myFunction()">Test</button>

<p>Values higher: <span id="demo"></span></p>

<script>
const numbers = [4, 12, 16, 20];

function checkValue(x) {
  return x > document.getElementById("toCheck").value;
}

function myFunction() {
  document.getElementById("demo").innerHTML = numbers.some(checkValue);
}
</script>