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Matriz de JavaScript algunos ()

Ejemplo 1

Compruebe si algún valor es mayor de 18:

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

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

Definición y uso

El some()método verifica si algún elemento de la matriz pasa una prueba (proporcionada como una función).

El some()método ejecuta la función una vez para cada elemento de la matriz:

  • Si la función devuelve verdadero , some()devuelve verdadero y se detiene.
  • Si la función devuelve falso , some()devuelve falso y se detiene.

El some()método no ejecuta la función para elementos de matriz vacíos.

El some()método no cambia la matriz original.


Sintaxis

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

Parámetros

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.

Valor devuelto

Escribe Descripción
un booleano truesi alguno de los elementos de la matriz pasa la prueba, de lo contrario false.


Compatibilidad con navegador

some() es una característica de ECMAScript3 (ES3).

ES3 (JavaScript 1999) es totalmente compatible con todos los navegadores:

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

Ejemplo 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>