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Loops in Javascript
A Comprehensive Guide to JavaScript Loops
Loops in JavaScript are a fundamental concept that allows developers to execute a block of code repeatedly under certain conditions. They are an essential part of making applications more efficient and dynamic. In JavaScript, there are several types of loops, each with its use case and syntax. This article will explore the different loops available in JavaScript, including for
, while
, do...while
, and for...of
loops, as well as how to control these loops using break
and continue
statements.
The for
Loop
The for
loop is one of the most common loops in JavaScript. It repeats a block of code a specific number of times. It is particularly useful when the number of iterations is known before entering the loop. The syntax for a for
loop is as follows:
Initialization: Here, you typically define and set your loop counter.
Condition: The loop continues as long as this condition evaluates to true
.
Post-expression: Executes after each iteration, often used to update the loop counter.