Loop in javascript with example

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In JavaScript, you can create loops using the for, while, and do-while statements. Here are examples of each type of loop:

Here's an explanation of each of the three types of loops in JavaScript:

for loop:

A for loop is a control flow statement that allows you to repeat a block of code a certain number of times. The loop has three components: the initialization statement, the condition statement, and the increment/decrement statement.

Syntax:

for (initialization statement; condition statement; increment/decrement statement)
{
// code block to be executed
}

The initialization statement is executed only once before the loop starts. The condition statement is evaluated before each iteration of the loop, and if it is true, the code block is executed. The increment/decrement statement is executed after each iteration of the loop. The loop continues until the condition statement becomes false.

while loop:

A while loop is similar to a for loop, but it doesn't have an initialization or an increment/decrement statement. It only has a condition statement. The loop will continue to execute as long as the condition is true.

Syntax:

while (condition statement)
{
// code block to be executed
}

The condition statement is evaluated before each iteration of the loop, and if it is true, the code block is executed. If the condition becomes false, the loop stops.

do-while loop:

A do-while loop is similar to a while loop, but it executes the code block at least once before checking the condition.

Syntax:
javascript
do {
// code block to be executed
}
while (condition statement);

The code block is executed once before the condition statement is evaluated. If the condition is true, the loop will continue to execute. If the condition is false, the loop stops.

loops are used when you know the number of times you want to repeat a block of code, while loops are used when you don't know how many times you want to repeat a block of code, and do-while loops are used when you want to execute a block of code at least once before checking a condition.