Types Of Loops in JavaScript

A loop that runs a block of code a specific number of times.

for (let i = 0; i < 15; i++) {
  console.log(i);
}

Description: The classic loop, ideal when the number of iterations is known in advance.

2. While Loop

A loop that continues to execute as long as the condition is true.

let i = 0;
while (i < 15) {
  console.log(i);
  i++;
}

Description: A condition-controlled loop that runs until the condition becomes false.

3. do…while Loop

A loop that executes the block of code at least once, and then checks the condition.

let i = 0;
do {
  console.log(i);
  i++;
} while (i < 15);

Description: Always executes the code at least once, regardless of the initial condition.

4. For..of Loop

A loop that iterates over iterable objects like arrays.

let arr = [10, 20, 30, 15, 25 ,35];
for (let value of arr) {
  console.log(value);
}

Description: Perfect for looping through arrays or other iterable objects.

5. for… in Loop

A loop that iterates over the properties of an object.

let obj = {a: 1, b: 2, c: 3, d: 10, e: 15};
for (let key in obj) {
  console.log(key, obj[key]);
}

Description: Best suited for looping through object properties in key-value pairs.

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