Loops in JavaScript
In JavaScript, loops allow a block of code to be executed repeatedly until a condition is met. The most common types of loops are:
Syntax:
Loops in JavaScript are used as follows:
- For loop:
Used when you know how many times you want to execute a block of code. It's ideal for repetitions with a determined number of iterations, such as counting from 1 to 10.
for (let i = 0; i < 5; i++) { ... } - While loop:
Executes as long as a condition is true. It's useful when you don't know how many times the code block should repeat, but you know when it should stop.
while (i < 5) { ... } - Do...while loop:
Similar to while, but ensures the code block executes at least once before checking the condition. It's used when it's necessary to execute the code once before validating if it's still true.
do { ... } while (i < 5);
Purpose:
Using loops allows you to automate repetitive tasks and make your code more efficient.
Exercises
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JavaScript Concepts and Reference
Functions
Objects in JavaScript
Arrays
DOM (Document Object Model)
Error Handling
Promises and Asynchronicity
Modules in JavaScript
ES6 and Advanced Features
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