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Other References

CSSStyleDeclaration JS Conversion


Array JavaScript setiap ()

Contoh 1

Periksa apakah semua nilai dalam usia[] lebih dari 18:

const ages = [32, 33, 16, 40];

ages.every(checkAge)

function checkAge(age) {
  return age > 18;
}

Lebih banyak contoh "Coba Sendiri" di bawah ini.


Definisi dan Penggunaan

Metode every()mengeksekusi fungsi untuk setiap elemen array.

Metode every()kembali truejika fungsi mengembalikan nilai true untuk semua elemen.

Metode every()kembali falsejika fungsi mengembalikan false untuk satu elemen.

Metode every()tidak menjalankan fungsi untuk elemen kosong.

Metode every()ini tidak mengubah array asli


Sintaksis

array.every(function(currentValue, index, arr), thisValue)

Parameter

Parameter Description
function() Required.
A function to be run for each element in the array.
currentValue Required.
The value of the current element.
index Optional.
The index of the current element.
arr Optional.
The array of the current element.
thisValue Optional. Default undefined.
A value passed to the function as its this value.

Nilai Kembali

Jenis Keterangan
Sebuah boolean truejika semua elemen lulus tes, jika tidak false.


Dukungan Peramban

every()adalah fitur ECMAScript5 (ES5).

ES5 (JavaScript 2009) didukung penuh di semua browser:

Chrome IE Edge Firefox Safari Opera
Yes 9-11 Yes Yes Yes Yes

Lebih Banyak Contoh

Periksa apakah semua jawaban sama:

const survey = [
  { name: "Steve", answer: "Yes"},
  { name: "Jessica", answer: "Yes"},
  { name: "Peter", answer: "Yes"},
  { name: "Elaine", answer: "No"}
];

let result = survey.every(isSameAnswer);

function isSameAnswer(el, index, arr) {
  if (index === 0) {
    return true;
  } else {
    return (el.answer === arr[index - 1].answer);
  }
}

Periksa apakah semua nilai melebihi angka tertentu:

<p><input type="number" id="ageToCheck" value="18"></p>

<button onclick="myFunction()">Try it</button>

<p id="demo"></p>

<script>
const ages = [32, 33, 12, 40];

function checkAge(age) {
  return age > document.getElementById("ageToCheck").value;
}

function myFunction() {
  document.getElementById("demo").innerHTML = ages.every(checkAge);
}
</script>