All about javascript

  Functions are required to make our code ‘run’. Functions will take data, compute it, and return the computed data. All code that is ‘run’ in JavaScript is run inside of a function. At the end of this article, you should be able to: Understand JavaScript functions, why we use them, and be able to write correct function syntax. Write and call functions using arguments and parameters. Explain function scope and the return statement. Requirements Introduction to JavaScript: Basics Introduction to JavaScript: Control Flow Learn Learn to understand JavaScript functions, why we use them, and be able to write correct function syntax. Introduction to Functions Now that we have the basics of JavaScript down, data types, conditional statements, and variables, we need functions to compute them, change them, and do something with them. We can think of functions as small computer programs. Functions are required to get our code to ‘run’ in JavaScript. Although you may not realize it, you have ...

  Often times we want our program to act differently based on the information supplied to it. This is known as control flow, and is an integral part of software development. At the end of this article, you should be able to: understand and be able to use different operators. write control flow using if/else statements. write a basic for loop. Requirements Introduction to JavaScript: Basics Learn Learn to understand and be able to use different operators. Overview Operators allow software developers to compare variables and enable programs to make decisions about control flow. In order to understand control flow, we must first understand some basic operators. Undefined and Null There are a couple of JavaScript objects that don’t really fit into any type. Those are the values   undefined   and   null . You will get   undefined   when you are looking for something that does not exist like a variable that does not have a value yet.   undefined   simpl...