For loop in JavaScript

Looping in programming languages is a feature which facilitates the execution of a set of instructions/functions repeatedly while some condition evaluates to true. For example, suppose we want to print “Hello Javascript” 50 times. This will take too much time if we write one by one but by using loops it is very simple to write.

In computer programming, a loop is a sequence of instructions that is repeated until a certain condition is reached.

An operation is done, such as getting an item of data and changing it, and then some condition is checked such as whether a counter has reached a prescribed number.
Counter not Reached: If the counter has not reached the desired number, the next instruction in the sequence returns to the first instruction in the sequence and repeat it.
Counter reached: If the condition has been reached, the next instruction “falls through” to the next sequential instruction or branches outside the loop.
There are mainly two types of loops:

Entry Controlled loops: In this type of loops the test condition is tested before entering the loop body. For Loop and While Loop are entry controlled loops.
Exit Controlled Loops: In this type of loops the test condition is tested or evaluated at the end of loop body. Therefore, the loop body will execute atleast once, irrespective of whether the test condition is true or false. do – while loop is exit controlled loop.
JavaScript mainly provides three ways for executing the loops. While all the ways provide similar basic functionality, they differ in their syntax and condition checking time. Let us learn about each one of these in details.

For Loop:
for loop provides a concise way of writing the loop structure. Unlike a while loop, a for statement consumes the initialization, condition and increment/decrement in one line thereby providing a shorter, easy to debug structure of looping.
Syntax:
for (initialization condition; testing condition;
increment/decrement)
{
statement(s)
}

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Will a for loop execute without initialization