for let of code example
Example 1: for in and for of in js
Object.prototype.objCustom = function () {};
Array.prototype.arrCustom = function () {};
let iterable = [3, 5, 7];
iterable.foo = "hello";
for (let i in iterable) {
console.log(i);
}
for (let i of iterable) {
console.log(i);
}
Example 2: for in and for of in js
let iterable = new Map([["a", 1], ["b", 2], ["c", 3]]);
for (let entry of iterable) {
console.log(entry);
}
for (let [key, value] of iterable) {
console.log(value);
}
Example 3: mdn for..of
function* fibonacci() {
let [prev, curr] = [0, 1];
while (true) {
[prev, curr] = [curr, prev + curr];
yield curr;
}
}
for (const n of fibonacci()) {
console.log(n);
if (n >= 1000) {
break;
}
}