JavaScript Essentials 2020 Mini Course

Explore code examples, practice assignments, and join a Facebook group of developers to get support while learning JavaScript essentials 2020 mini course.

Connect with senior JavaScript developers by joining the Facebook group learning to code, answer a few basic questions to join, and access expert insights.

Explore codepen.io, an online editor that lets you create a new pen with live HTML, CSS, and JavaScript updates, save and share code for free with real-time previews.

Clarify the problem you need help with so others can understand and answer effectively. Add relevant details, spell accurately, and Google the problem first to craft well-worded, grammatically correct questions.

Learn where to put your JavaScript for reliable DOM access; avoid head placement, place scripts at the bottom of the body to ensure the DOM is loaded.

Explore variables and data types in JavaScript, declaring strings, numbers, booleans, and undefined values, and learn syntax, semicolons, and naming conventions like camelCase and underscores.

Explore objects and arrays in JavaScript, including keys, values, and dot notation, plus strings, integers, floats, and undefined. Learn zero-based array indexing and data type transferability.

Caleb invites you to leave a review and share feedback to help improve this JavaScript essentials 2020 course, with a private message for ideas and immediate changes toward five-star results.

Ask questions when you’re stuck to get answers, and join the Learning to code Facebook group for help from thousands of developers; share what’s going well to start conversations.

Discover string manipulation in JavaScript by using dot notation to access string methods, check length, convert to lower or upper case, locate substrings with indexOf, replace text, and concatenate strings.

Demonstrate string manipulation in JavaScript through concatenation with the plus operator, data types awareness, parsing strings to numbers, and converting strings and arrays with split and join.

Practice transforming strings in JavaScript by turning variables into a URL-like string, lowercasing everything, and prepending a website name, using techniques like replace, split, join, and concatenation.

Watch a live JavaScript project that builds a URL from user input by lowercasing, replacing extra spaces, and joining words with the base site while embracing a security-first mindset.

Explore how to write effective comments in JavaScript using // and /* */ to explain variables, functions, and code flow, improving communication among developers and your future self.

Explore basic operators like addition, subtraction, multiplication, division, and modulus; apply increment, decrement, and assignment operators (+=, -=) with expressions and parentheses, guided by bedmas.

Master comparison operators in JavaScript to evaluate true or false, using equals, strict equals, not equals, greater than, less than, and logical operators with console examples.

Explore how if/else statements control code flow by evaluating comparisons and variables, handle true/false branches, and respond to user input with else blocks.

Explore using prompt to capture user input, then drive actions with if/else statements, handle cancel and empty input, and debug with console logs while attaching JavaScript to an HTML page.

Learn how to use document.querySelector with the main id to add and retrieve content on a page, updating innerHTML and applying string methods like toUpperCase and replace.

Master query selectors in JavaScript by using a class selector to access a textfield, read its input value, and update styling with element.style and camelCase properties.

Learn how to define and reuse functions in JavaScript, pass parameters, return values, and manage scope, following the don't repeat yourself principle with practical examples.

Explore how JavaScript functions work by building get name and get first name, using input values, split, and return to obtain first name, embracing dry principle of not repeating yourself.

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