how to copy one array to another in javascript
const sheeps = ['Apple', 'Banana', 'Juice'];
// Old way
const cloneSheeps = sheeps.slice();
// ES6 way
const cloneSheepsES6 = [...sheeps];
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4
6
/* Copying arrays or parts of arrays in JavaScript */
var fruit = ["apple", "banana", "fig"]; // Define initial array.
console.log(fruit); // ["apple", "banana", "fig"]
// Copy an entire array using .slice()
var fruit2 = fruit.slice();
console.log(fruit2); // ["apple", "banana", "fig"]
// Copy only two array indicies rather than all three
// From index 0 (inclusive) to index 2 (noninclusive)
var fruit3 = fruit.slice(0,2);
console.log(fruit3); // ["apple", "banana"]
Thank you!
6
4
(6 Votes)
0
4.2
10
// this is for array with complex object
var countries = [
{name: 'USA', population: '300M'},
{name: 'China', population: '1.6B'}
];
var newCountries = JSON.parse(JSON.stringify(countries));
Thank you!
10
4.2
(10 Votes)
0
3
1
var numbers = [1,2,3,4,5];
var newNumbers = Object.assign([], numbers);
Thank you!
1
3
(1 Votes)
0
4.29
7
// 1) Array of literal-values (boolean, number, string)
const type1 = [true, 1, "true"];
// 2) Array of literal-structures (array, object)
const type2 = [[], {}];
// 3) Array of prototype-objects (function)
const type3 = [function () {}, function () {}];
Thank you!
7
4.29
(7 Votes)
0
4
4
var destinationArray = Array.from(sourceArray);
Thank you!
4
4
(4 Votes)
0
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