for of mdn

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showing results for - "for of mdn"
Erica
10 Jan 2019
1let iterable = new Map([["a", 1], ["b", 2], ["c", 3]]);
2
3for (let entry of iterable) {
4  console.log(entry);
5}
6// [a, 1]
7// [b, 2]
8// [c, 3]
9
10for (let [key, value] of iterable) {
11  console.log(value);
12}
13// 1
14// 2
15// 3
16
Donovan
04 Apr 2020
1Object.prototype.objCustom = function () {};
2Array.prototype.arrCustom = function () {};
3
4let iterable = [3, 5, 7];
5iterable.foo = "hello";
6
7for (let i in iterable) {
8  console.log(i); // logs 0, 1, 2, "foo", "arrCustom", "objCustom"
9}
10
11for (let i of iterable) {
12  console.log(i); // logs 3, 5, 7
13}
14
Joshua
28 Feb 2017
1function* fibonacci() { // generatore di funzione
2  let [prev, curr] = [0, 1];
3  while (true) {
4    [prev, curr] = [curr, prev + curr];
5    yield curr;
6  }
7}
8
9for (let n of fibonacci()) {
10  console.log(n);
11  // tronca la sequenza a 1000
12  if (n >= 1000) {
13    break;
14  }
15}
16
Angel
24 May 2018
1let array = [10, 20, 30];
2
3for (let valore of array) {
4  console.log(valore);
5}
6// Output:
7// 10
8// 20
9// 30
10
Marie
22 Jul 2018
1let iterable = new Uint8Array([0x00, 0xff]);
2
3for (let value of iterable) {
4  console.log(value);
5}
6// 0
7// 255
8
Silvia
04 Jul 2020
1let iterable = [10, 20, 30];
2
3for (const value of iterable) {
4  console.log(value); // il valore di value di questo ciclo rimarrà costante
5  value++; // operazione non consentita.
6}
7// 10
8// 20
9// 30
10
Angela
20 Jan 2019
1let iterable = "boo";
2
3for (let value of iterable) {
4  console.log(value);
5}
6// output:
7// "b"
8// "o"
9// "o"
10
Marwa
21 Jun 2017
1for (variabile of oggettoIterabile) {
2  istruzioni
3}
4
Miguel Ángel
24 Jan 2019
1let iterable = new Set([1, 1, 2, 2, 3, 3]);
2
3for (let value of iterable) {
4  console.log(value);
5}
6// 1
7// 2
8// 3
9
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