Array.prototype.slice()

Baseline Widely available

This feature is well established and works across many devices and browser versions. Its been available across browsers since 2015 7.

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slice() begin end (end ) . .

const animals = ["ant", "bison", "camel", "duck", "elephant"];

console.log(animals.slice(2));
// Expected output: Array ["camel", "duck", "elephant"]

console.log(animals.slice(2, 4));
// Expected output: Array ["camel", "duck"]

console.log(animals.slice(1, 5));
// Expected output: Array ["bison", "camel", "duck", "elephant"]

console.log(animals.slice(-2));
// Expected output: Array ["duck", "elephant"]

console.log(animals.slice(2, -1));
// Expected output: Array ["camel", "duck"]

console.log(animals.slice());
// Expected output: Array ["ant", "bison", "camel", "duck", "elephant"]

    arr.slice([begin[, end]])

begin Optional: 0 . . slice(-2) . begin undefined , 0 slice . begin , .
end Optional: 0 . slice end . , slice(1,4) (1, 2 3 ) . . slice(2,-1) . end slice() (arr.length) .

end , slice() (arr.length) .

slice() . . :

( ) , slice() . . .
String Number slice() . .

let fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"];
let citrus = fruits.slice(1, 3);

// fruits contains ['Banana', 'Orange', 'Lemon', 'Apple', 'Mango']
// citrus contains ['Orange','Lemon']

`slice`

slice() myCar newCar . myHonda . myHonda .

// Using slice, create newCar from myCar.
let myHonda = { color: "red", wheels: 4, engine: { cylinders: 4, size: 2.2 } };
let myCar = [myHonda, 2, "cherry condition", "purchased 1997"];
let newCar = myCar.slice(0, 2);

// Display the values of myCar, newCar, and the color of myHonda
//  referenced from both arrays.
console.log("myCar = " + JSON.stringify(myCar));
console.log("newCar = " + JSON.stringify(newCar));
console.log("myCar[0].color = " + myCar[0].color);
console.log("newCar[0].color = " + newCar[0].color);

// Change the color of myHonda.
myHonda.color = "purple";
console.log("The new color of my Honda is " + myHonda.color);

// Display the color of myHonda referenced from both arrays.
console.log("myCar[0].color = " + myCar[0].color);
console.log("newCar[0].color = " + newCar[0].color);

    myCar = [{color: 'red', wheels: 4, engine: {cylinders: 4, size: 2.2}}, 2,
             'cherry condition', 'purchased 1997']
    newCar = [{color: 'red', wheels: 4, engine: {cylinders: 4, size: 2.2}}, 2]
    myCar[0].color = red
    newCar[0].color = red
    The new color of my Honda is purple
    myCar[0].color = purple
    newCar[0].color = purple

slice() Array . Function.prototype.bind() slice() . " " arguments.

function list() {
  return Array.prototype.slice.call(arguments);
}

let list1 = list(1, 2, 3); // [1, 2, 3]

Function.prototype.call() , Array.prototype.slice.call [].slice.call .

, bind() .

let unboundSlice = Array.prototype.slice;
let slice = Function.prototype.call.bind(unboundSlice);

function list() {
  return slice(arguments);
}

let list1 = list(1, 2, 3); // [1, 2, 3]

Specification
ECMAScript 2027 LanguageSpecification # sec-array.prototype.slice

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Array.prototype.slice()

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`slice`