Js in loop

Loop:
Loops in JavaScript are used to reduce repetitive tasks by repeatedly executing a block of code as long as a specified condition is true.

1. for Loop

The for loop repeats a block of code a specific number of times. It contains initialization, condition, and increment/decrement in one line.

for (let i = 1; i <= 3; i++) {
    console.log("Count:", i);
}

for in loop:

The for-in loop iterates over the enumerable keys of an object.

const person = { name: "Alice", age: 22, city: "Delhi" };

for (let key in person) {
  console.log(key, ":", person[key]);
}

while:
The while loop executes as long as the condition is true. It can be thought of as a repeating if statement.

let i = 0;
while (i < 3) {
    console.log("Number:", i);
    i++;
}

when the condition is false, the code of the block is not executed.
Do While:
The do...while statement repeats until a specified condition evaluates to false.

do
  statement
while (condition);

for...in statement:

The for...in statement iterates a specified variable over all the enumerable properties of an object. For each distinct property, JavaScript executes the specified statements.
While for...in iterates over property names, for...of iterates over property values:

const arr = [3, 5, 7];
arr.foo = "hello";

for (const i in arr) {
  console.log(i);
}
// "0" "1" "2" "foo"

for (const i of arr) {
  console.log(i);
}
// Logs: 3 5 7