Why Study JavaScript? JavaScript is one of the 3 languages all web developers must learn: 1. HTML to define the content of web pages. 2. CSS to specify the layout of web pages. 3. …

Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.

Arrays are a special type of objects. The typeof operator in JavaScript returns "object" for arrays. But, JavaScript arrays are best described as arrays. Arrays use numbers to access its …

A JavaScript function is a block of code designed to perform a particular task. A JavaScript function is executed when "something" invokes it (calls it).

JavaScript Operators. Operators are used to assign values, compare values, perform arithmetic operations, and more. There are different types of JavaScript operators: Arithmetic Operators; …

When comparing a string with a number, JavaScript will convert the string to a number when doing the comparison. An empty string converts to 0. A non-numeric string converts to NaN …

Javascript operators are used to perform different types of mathematical and logical computations. Examples: The Assignment Operator = assigns values. The Addition Operator + …

In a programming language, variables are used to store data values. JavaScript uses the keywords var , let and const to declare variables. An equal sign is used to assign values to …

With the HTML DOM, JavaScript can access and change all the elements of an HTML document.

JavaScript variables can hold numbers like 100 and text values like "John Doe". In programming, text values are called text strings. JavaScript can handle many types of data, but for now, just …