Course: Learn By Example: The Foundations of HTML, CSS & Javascript

Learn By Example: The Foundations of HTML, CSS & Javascript

  • Life Time Access
  • Certificate on Completion
  • Access on Android and iOS App
  • Self-Paced
About this Course

Closures, prototypes, JSON, the DOM, selectors, inheritance in CSS and in Javascript, and first class functions - that's what this course is about.

This is not a course on Javascript frameworks - its about solid, fundamental HTML, CSS and Javascript. You'll be surprised by how much more you can get done on your web pages once you learn these technologies the right way.

What do we mean by that?

Relatively few folks formally learn HTML, CSS or Javascript, because its quite easy to get stuff done in these technologies in a "quick-and-dirty way".

That "quick-and-dirty" way of learning and doing leads to problems over time, because Javascript and CSS are actually quite complex, so it is easy to do things the wrong way

This course will help, because it has 75 examples, 20 in HTML/CSS and 55 in Javascript. Each is self-contained, has its source code attached, and gets across a simple, specific use-case. Each example is simple, but not simplistic.

What's Included:

  • Basic HTML: Folks stopped counting HTML as a language worth formally learning sometime in the 90s, but this is only partially justified. It always helps to have strong basics.
  • CSS: Cascading Stylesheets are incredibly powerful, and incredibly hard to use - until you know how they really work. Once you understand inheritance and selection in CSS, it will all make a lot more sense.
  • Javascript is a full-fledged, powerful and complicated language. Its really important to learn Javascript formally, because it is just so different from most other languages you would have encountered. For instance - Javascript has objects and inheritance but no classes.
  • Closures in Javascript are a rather mind-bending concept - functions that "remember" how the world looked when they were created.
  • Prototypes are Javascript's way of doing inheritance, and its very different from the C++/Java way of doing it.
  • JSON is not conceptually difficult to use, but it is incredibly important, and you should understand why - because its the glue between backends written in Java or other traditional languages, and front-ends written in Javascript
  • The Document-Object-Model is what ties Javascript back to HTML and CSS. Together with JSON, the DOM ties it all together from server to skin.

Using discussion forums

Please use the discussion forums on this course to engage with other students and to help each other out. Unfortunately, much as we would like to, it is not possible for us at Loonycorn to respond to individual questions from students:-(

We're super small and self-funded with only 2 people developing technical video content. Our mission is to make high-quality courses available at super low prices.

The only way to keep our prices this low is to *NOT offer additional technical support over email or in-person*. The truth is, direct support is hugely expensive and just does not scale.

We understand that this is not ideal and that a lot of students might benefit from this additional support. Hiring resources for additional support would make our offering much more expensive, thus defeating our original purpose.

It is a hard trade-off.

Thank you for your patience and understanding!

Who is the target audience?

  • Yep! Folks who are absolutely new to web programming, and wish to learn HTML and CSS from scratch
  • Yep! Folks who are seeking to learn Javascript the right way - including folks who may done some Javascript programming, but are not quite confident using advanced features such as closures or dynamic prototyping
  • Yep! Java, C#, Python or C++ programmers who are looking to master Javascript
  • Nope! This class is not right for you if you are looking to learn Javascript frameworks such as JQuery, Angular or Node.js
Basic knowledge
  • Any modern browser and a simple text editor are all that will be needed for the code examples
  • Some prior programming experience will definitely help in the advanced Javascript portions - if you are entirely new to programming, the second half of the Javascript section will seem very challenging
What you will learn
  • Understand HTML - its structure, and the commonly used tags
  • Utilise CSS, including inheritance, selectors, the box model - the very topics that make CSS hard to use
  • Master the fundamentals of Javascript
  • Use closures, dynamic prototyping, JSON, and the Document-Object-Model with confidence
Number of Lectures: 94
Total Duration: 13:00:36
Welcome to HTML, CSS and Javascript!
  • Welcome to HTML, CSS and Javascript!  

    HTML, CSS and Javascript are the 3 cornerstones of web programming.

  • Introducing HTML and CSS  

    HTML specifies the structure of a web page and CSS how the page looks i.e. the presentation.

  • Introduction to HTML  

    Plunge right in, set up a simple page and get introduced to a whole bunch of HTML tags.

  • Introduction to CSS  

    What's an HTML page without style? Get to know the HTML <style> tag and how it can be used to specify style properties to make your pages look good.

  • The A Tag  

    The internet is all about links. Who links to you and who do you link to? In this lecture we'll learn how we link to others using the <a> tag and its href attribute.

  • Paths  

    Paths in HTML can reference resources on our server as well as resources anywhere on the web. Relative paths are relative to the location of the HTML file and absolute paths can access resources on any server.

  • Quotes  

    HTML provides a whole bunch of quote tags. Learn about the <q> and the <blockquote> tags and why we would use them over specifying quotes ("") in text.

  • Lists - Ordered and Unordered  

    Bulleted lists and numbered lists. HTML has special <ul> and <ol> tags to specify these. Each list item in an <li> tag should go with either an un-ordered list (<ul>) or an ordered list (<ol>).

  • Other Miscellaneous HTML Tags  

    The <em>, <time>, <strong> and <code> tags.

  • URL and Domain Names  

    Understand the different parts of a domain name and what they represent. Revisit the <a> tag and learn some more about how we can open up a new web page in a new window, tab etc.

  • The img Tag  

    The <img> tag allows you to embed inline images in your page. You can also resize images using the height and width attribute of the <img> tag.

  • The HTML Standard  

    HTML is a living standard now. No more version numbers and everything will be backward compatible from here on in. This is a pretty big deal!

  • Cascading Stylesheets reintroduced  

    Get re-introduced to CSS and see how CSS files are set up separately from the HTML and linked to the HTML page. It's good practice to separate the CSS and HTML files so both can be worked on separately.

  • Inheritance in CSS  

    CSS styles inherit from the parent element, or do they? CSS inheritance is tricky and it's important to know how a certain style is applied on an element. This lecture should have the answers.

  • CSS Selectors  

    How do you apply styles to specific HTML elements? You select them. How do you select them? By specifying the tag, a CSS class or their unique identifier.

  • Fonts  

    Understanding sans-serif fonts, fallback options on a webpage, using fonts from free services such as Google etc.

  • Colors  

    How to change text color, background colors and specify colors using their hex code.

  • The Box Model  

    Understand margins, padding and borders and where exactly they apply. They form the CSS box model which has tripped up many an aspiring web developer.

  • The <div> Element  

    The <div> is a block element which is used to logically group HTML elements. The logical components can then be styled together.

  • What is the exact style applied?  

    Figure out why the "cascade" exists in Cascading Stylesheets.

  • The <span> Element  

    The <span> allows logical grouping of inline elements and is a perfect partner to <div>.

  • HTML States and Pseudo-classes  

    CSS allows you to apply styles to not just HTML elements but also specific states of an element. The :hover, :focus, :link are all examples of states of a particular element.

  • Normal Rendering Flow Of The Browser  

    Normal Rendering Flow Of The Browser

  • The CSS float and clear properties  

    The CSS float and clear properties.

  • Experimenting with the position attribute  

    Understand the CSS position attribute and how it works.

  • Fluid And Fixed Layouts  

    Fluid layouts allow the elements of a page to move as the page resizes, but you might not want them to! Then you'd choose the fixed layout.

  • The CSS display property  

    The display property can make block elements behave like inline elements, make elements disappear and whole bunch of other stuff.

  • Chrome Developer Tools  

    Chrome Developer Tools

Javascript Basics
  • Introducing Javascript  

    If HTML is the skeleton and CSS is the skin, then Javascript is the brain of web applications.

  • Example 2: Basic programming constructs  

    A simple Javascript example explained, take in user input and display it to the user in a pop up window.

  • Example 3: Separating HTML and JS files  

    You can link the <script> tags to standalone JS files. JS is usually separated out into a completely different file in production systems.

  • Example 4: Using the console.log statement  

    Chrome developer tools offers a very cool way to print out statements on the developer console. Use this to see the result of your JS code.

  • Example 5: Local and global variables  

    Javascript variables can be local to a scope or global to the entire program.

  • Example 6: Undeclared variables in JS are global  

    If you leave out the var keyword the variable is undeclared and undeclared variables default to global. Always declare your JS variables.

  • Example 7: Local variables hide global variables of the same name  

    A local variable takes precedence over a global variable of the same name.

  • Example 8: Javascript is ephemeral, reloading a page resets everything  

    Javascript variables hold their value only as long as the current page is loaded. A page refresh re-initializes all global variables.

  • Example 9: Creating and using arrays  

    Arrays in JS are super easy to create and use.

  • Example 10: Copying an array  

    Shallow copies and deep copies of an array, what they mean and how they work.

  • Example 11: Adding an element to an array  

    Use array.push() to append new elements to the end of an array.

  • Example 12: Deleting elements from an array  

    Use array.splice() to remove elements from an array.

  • Example 13: Arrays can contain different types  

    Javascript is not strongly typed, which means you can mix and match elements of different types in the same array.

  • Example 14: Non-existent array elements are undefined  

    Accessing non-existent elements in arrays is not an error in Javascript. It simply returns undefined.

  • First class functions  

    Functions are first class citizens, they can be assigned to variables, returned from functions and passed as an argument into functions.

  • Example 1: Executing Javascript code  

    Where do you write Javascript code? In <script> tags on the HTML page.

Objects in Javascript
  • Introduction to Javascript objects  

    Javascript objects are very different from C++ and Java objects! It's quite a paradigm change if you've programmed in other languages before.

  • Example 15: Creating an object using JSON  

    JSON can be used as a textual representation of a JS object. You can construct an object using JSON notation.

  • Example 16: Creating an object using a constructor  

    Object constructors are just functions with two specific differences. The use of the magical keyword "this" within the constructor and the use of the magical keyword "new" to create an object from the constructor

  • Example 17: Adding properties to objects dynamically  

    You can add properties to an object after it's been constructed on the fly! Pretty mind-bending for programmers from other object oriented languages.

  • Example 18: Removing properties from objects dynamically  

    You can also remove properties from objects after they have been constructed. Again not allowed in traditional object oriented languages!

  • Example 19: Object properties can be functions  

    Functions are first class citizens in Javascript which means that object properties can be function as well.

  • Example 20: Object constructors can have property functions  

    Object properties defined in constructors can be functions as well! Again because functions are first class citizens.

  • Example 21: Two ways of accessing object properties  

    Properties of objects can be accessed using the dot "." notation as well as the square brackets "[]" notation. They are essentially the same.

  • Example 22: Iterating over all properties in an object  

    A special for loop exists to loop over object properties. Every object supports this thanks to the base Object class!

  • Example 23: Calling a constructor without new  

    Bad things happen when you call an object constructor without the new keyword.

  • Example 24: Understanding the typeof operator  

    The typeof operator tells you whether a variable is a number, string, object or undefined. It cannot differentiate between different types of objects though.

  • Example 25: Paternity tests using instanceof  

    Use the instanceof operator to figure out what constructor was used to create an object. This only recognizes where the object came from, it does not know what changes were made to the object after it was constructed.

  • Example 26: Faking public and private properties  

    Properties are public by default, however it's often useful to have private properties. These are not natively supported in JS but we can fake them.

First Class Functions - In Detail
  • Example 27: Functions as arguments to functions  

    First class functions mean that we can pass them as arguments to functions.

  • Example 30: Arguments pass by reference  

    Arrays and objects are pass by reference, this means that modifications within functions are reflected in the calling code. But not reassignments! What's the difference? This lecture explains it all.

  • Example 28: Functions that return functions  

    Functions that return functions

  • Example 29: Arguments pass by value to functions  

    Arguments pass by value to functions

Javascript Quirks
  • Introduction to Javascript Quirks  

    Introduction to Javascript Quirks

  • Example 31: Understanding undefined  

    Ahh finally - what exact is undefined? It means an absence of a value.

  • Example 32: Understanding null  

    Null unlike undefined is a special value with a type object.

  • Example 33: Understanding NaN  

    This weird JS quirk causes many headaches, if it's NaN it's not a number.

  • Example 34: Strings and numbers and conversions between them  

    The == causes conversions between numbers and strings with strange results. These can trip up even the most experienced programmer.

  • Example 35: Strange comparison operators  

    The == is the quality operator and === is the strict equality operator. Knowing the difference can save you trouble down the road.

  • Example 36: Truthy and falsy  

    Cute names to describe strings or numbers which are evaluated to true or false using the equality (==) operator.

  • Example 37: Simple string operations  

    Strings are actually objects and are immutable. What does that mean? This lecture explains it all.

Functions Yet Again
  • Example 38: Declared Functions, Function Literals and Hoisting  

    Two types of function declarations in JS, declared functions and function literals. The names are intimidating but the concepts simple. They behave the same way except for one teeny tiny thing.

  • Example 39: Named And Anonymous Function Literals  

    Named And Anonymous Function Literals

  • Example 40: Nested Functions  

    Functions declared within another are nested functions, these form the foundation of closures.

  • Example 41: Nested functions can be declared  

    Nested functions need not only be function literals, they can be declared as well.

  • Introduction to closures  

    Closures are mind-bendingly awesome. Each function carries around with it the context in which it was created!

  • Example 42: Closure variables win over local variables  

    Closure variables have precedence over local as well as global variables. You can't control the value of a variable that a nested functions sees!

  • Example 43: Closures with declared functions and function literals  

    Closures with declared functions and function literals

  • Example 44: Referencing environment with function parameters  

    The function parameters of the outer function also form part of the referencing environment in the closure.

  • Example 45: Closure variables cooler than global variables  

    Closure variables cooler than global variables

Prototypes, Dynamic Prototyping and Inheritance
  • Introduction to prototypes  

    Javascript supports inheritance, but it does so in a very different way - using prototypes. The key is the prototype property that all object constructors possess. How can a function have a property? Why, because functions are objects of course!

  • Example 46: Prototypical Inheritance In Action  

    Let's plunge into our first example of prototypical inheritance, and understand the prototype keyword.

  • Example 47: Dynamic Prototyping  

    An object's prototype can change on the fly - this is called Dynamic Prototyping, and this can lead to some pretty surprising effects in Javascript

  • Example 48: Inheritance hierarchy using chained prototypes  

    A chain of inheritance can be implemented via prototypes - the Javascript interpreter will walk up the hierarchy until it can resolve a property.

  • Example 49: Overriding properties using prototypes  

    You can use the prototype keyword to override a property of all objects! Its a lot more powerful than simply overriding a property on a single object.

  • Example 50: The base object as the ultimate prototype  

    Javascript has a prototype Object, from which all objects derive. In this sense its exactly like Java (of course the mechanism of inheritance is very different in Javascript)

  • Example 51: Overriding properties of built-in objects  

    Did you know that its possible to override properties even of built-in object types, such as strings? Do so with care!

The Document Object Model & Event Handling
  • Introduction to the Document Object Model  

    The browser parses the HTML of a page, and builds a nice tree, called the DOM. This DOM can be used from within your javascript code to access HTML elements via Javascript objects. Its super-cool!

  • Example 52: Modifying the HTML of a page using the DOM  

    The power of the DOM lies in how Javascript utilises it to modify the HTML of a webpage.

  • Example 53: Event Handling  

    Not only can Javascript modify the HTML using the DOM - it can also react to user actions, such as button clicks, via event handlers!

  • Example 54: Adding Multiple Event Handlers on the Same Event  

    There is an easy way to have specify multiple event listeners on the same event.

  • Example 55: Setting Arbitrary HTML Attributes  

    Let's check out how to set the src attribute of an image tag

  • Example 56: The window object  

    You can always access the browser via the window object - but be careful what you do with it! The window object is carefully circumscribed by browser security rules, but you can use it to open new browser windows or redirect to a new page (do so with care, its poor ettiquette!)

  • Introduction To JSON  

    JSON is a simple way to create an object from a string. Its full power lies in its simplicity, and in the fact that server-side code, which maybe in Java or C++, can communicate with a client in Javascript. This is huge.

  • Example 57: Simple JSON Use Cases  

    JSON can be used to create virtually anything - strings, numbers, booleans, empty objects, arrays.

  • Example 58: Creating meaningful objects with JSON  

    JSON can be used to create arbitrarily complex objects - see how.

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