JavaScript Course - Free lessons

Welcome to this JavaScript course.
JavaScript is ubiquitous on the World Wide Web. You can use JavaScript to make your Web pages more interactive, so that they react to a viewer's actions, and to give your Web pages some special visual effects.
JavaScript allows you to add additional features that a static HTML page can't provide without some script code.
The JavaScript lessons of this course are free and a good start for beginners, they offer the necessary elements to learn the JavaScript programming language and working with JS code.

JavaScript Lessons

• JavaScript introduction
  - Introduction to JavaScript, a web programming and scripting language, some introductive presentations
• JavaScript Syntax
  - About JavaScript code and syntax. How to write a simple JS code in the HTML page and external file
• Variables and Operators
  - Using variables and operators in JavaScript, the basics of programming - JavaScript Course
• JavaScript Operators
  - JavaScript Operators, arithmetics, logicals, for strings, for functions, conditional operator, operators precedence
• Conditional statements if, else, switch
  - About conditional statements: if, else and switch - JavaScript Course
• For loops in JavaScript
  - Using for loops in JavaScript, for ... in and forEach - JavaScript Course
• While loops
  - Using while loops and Do While - JavaScript course
• Alert, Confirm and Prompt
  - How to use Alert, Prompt and Confirm, predefined JavaScript windows
• Functions
  - Using functions in JavaScript, declaring and calling functions with or without parameters
• Functions - scope, arguments and recursive
  - Different ways to declare a function. About variable scope, arguments, nested and recursive functions
• Callback Functions in JavaScript
  - JavaScript lesson about callback functions. Passing function as argument to other function
• JavaScript Strings
  - String object, creating and using strings in JavaScript. Properties and methods of the string object
• JavaScript Arrays
  - Array object, creating and using arrays in JavaScript. Properties and methods of the array object
• Associative Arrays in JavaScript
  - Creating and using Associative Arrays in JavaScript, traversing elements of the associative array
• The Number and Math Objects
  - Using the Number and Math object, for complex operations. Properties and methods of the Number and Math object
• JS Date Object
  - JavaScript Date object, set and get time values. Properties and methods of the JS Date object
• Global Object
  - About JavaScript Global object. Properties and methods /functions of the Global object
• JSON syntax in JavaScript
  - Learn how to use JSON syntax in JavaScript, to create array and objects using JSON format
• Convert JSON in JavaScript
  - Convert JSON string to a JavaScript object, convert JavaScript objects into JSON string, parse JSON
• Window Object
  - An Introduction to the Window Object. Properties and methods of the Window object - JavaScript Course
• Document Object - DOM
  - DOM, Document Object Model, accessing and using the DOM with JavaScript. Document object properties and methods
• Document object and Forms
  - Using Document Object and Forms. How to access and change the data from input form fields using DOM hierarchy
• navigator and history objects
  - Level one JavaScript browser objects, navigator and history. Properties, methods and examples
• location and screen
  - JavaScript course - browser objects, location and screen. Properties, methods and examples
• anchor and link object
  - JavaScript anchor and link object, represent an HTML hyperlin tag. Properties, methods and examples
• Form, text, textarea, file objects
  - Properties, methods and events of the form object and its sub-objects, text, password, hidden, textarea and file
• Buttons, Checkbox, Radio, Select, Option objects
  - Otfer form sub-objects: Buttons, Checkbox, Radio, Select, Option objects. Properties, methods and events
• JavaScript Events
  - JavaScript Events, adding events in the HTML page. Examples and a list with JS Events for window, mouse, form elements and keyboard
• JavaScript - Register event handlers and Detect events
  - How to Register event handlers and Detect events in JavaScript, addEventListener method
• Image object
  - JavaScript Image object. Creating simple image effects using properties and methods of the Image object, preloading images
• Frame - IFrame object
  - JavaScript Frame and IFrame object. Accesing frames elements, properties, frame navigation
• Cookies
  - Using Cookies, creating, reading and deleting cookies. Working in JavaScript with data from cookie
• Working with getElementById
  - Working with getElementById. How to use the getElementById DOM method to get and set data in the HTML document
• Working with getElementsByTagName
  - Working with getElementsByTagName. How to use the getElementsByTagName JavaScript DOM method with HTML tags
• querySelector and querySelectorAll
  - Using querySelector and querySelectorAll JavaScript functions, to work with HTML elements in web page
• createElement and insertBefore
  - Using createElement and insertBefore JavaScript methods to create and to add HTML elements in the web page
• JavaScript code and PHP
  - Combine JavaScript code with PHP, create JS scripts that use server side data - JavaScript Course
• Creating and using classes in JavaScript
  - This lesson shows how to create, and use classes in JavaScript, with own properties and methods
• JavaScript Object Method Chaining
  - JavaScript Object Method Chaining. Calling multiple methods in a single instruction
• classList - Working with CSS classes
  - classList, JS property to work with CSS classes on HTML elements, to add, remove, replace and togglse CSS class