The JavaScript language

• An introduction
  • An Introduction to JavaScript
  • Manuals and specifications
  • Code editors
  • Developer console
• JavaScript Fundamentals
  • Hello, world!
    • Show an alert
    • Show an alert with an external script
  • Code structure
  • The modern mode, "use strict"
  • Variables
    • Working with variables
    • Giving the right name
    • Uppercase const?
  • Data types
    • String quotes
  • Interaction: alert, prompt, confirm
    • A simple page
  • Type Conversions
  • Basic operators, maths
    • The postfix and prefix forms
    • Assignment result
    • Type conversions
    • Fix the addition
  • Comparisons
    • Comparisons
  • Conditional branching: if, '?'
    • if (a string with zero)
    • The name of JavaScript
    • Show the sign
    • Rewrite 'if' into '?'
    • Rewrite 'if..else' into '?'
  • Logical operators
    • What's the result of OR?
    • What's the result of OR'ed alerts?
    • What is the result of AND?
    • What is the result of AND'ed alerts?
    • The result of OR AND OR
    • Check the range between
    • Check the range outside
    • A question about "if"
    • Check the login
  • Nullish coalescing operator '??'
  • Loops: while and for
    • Last loop value
    • Which values does the while loop show?
    • Which values get shown by the "for" loop?
    • Output even numbers in the loop
    • Replace "for" with "while"
    • Repeat until the input is correct
    • Output prime numbers
  • The "switch" statement
    • Rewrite the "switch" into an "if"
    • Rewrite "if" into "switch"
  • Functions
    • Is "else" required?
    • Rewrite the function using '?' or '||'
    • Function min(a, b)
    • Function pow(x,n)
  • Function expressions
  • Arrow functions, the basics
    • Rewrite with arrow functions
  • JavaScript specials
• Code quality
  • Debugging in the browser
  • Coding Style
    • Bad style
  • Comments
  • Ninja code
  • Automated testing with Mocha
    • What's wrong in the test?
  • Polyfills and transpilers
• Objects: the basics
  • Objects
    • Hello, object
    • Check for emptiness
    • Sum object properties
    • Multiply numeric property values by 2
  • Object references and copying
  • Garbage collection
  • Object methods, "this"
    • Using "this" in object literal
    • Create a calculator
    • Chaining
  • Constructor, operator "new"
    • Two functions – one object
    • Create new Calculator
    • Create new Accumulator
  • Optional chaining '?.'
  • Symbol type
  • Object to primitive conversion
• Data types
  • Methods of primitives
    • Can I add a string property?
  • Numbers
    • Sum numbers from the visitor
    • Why 6.35.toFixed(1) == 6.3?
    • Repeat until the input is a number
    • An occasional infinite loop
    • A random number from min to max
    • A random integer from min to max
  • Strings
    • Uppercase the first character
    • Check for spam
    • Truncate the text
    • Extract the money
  • Arrays
    • Is array copied?
    • Array operations.
    • Calling in an array context
    • Sum input numbers
    • A maximal subarray
  • Array methods
    • Translate border-left-width to borderLeftWidth
    • Filter range
    • Filter range "in place"
    • Sort in decreasing order
    • Copy and sort array
    • Create an extendable calculator
    • Map to names
    • Map to objects
    • Sort users by age
    • Shuffle an array
    • Get average age
    • Filter unique array members
    • Create keyed object from array
  • Iterables
  • Map and Set
    • Filter unique array members
    • Filter anagrams
    • Iterable keys
  • WeakMap and WeakSet
    • Store "unread" flags
    • Store read dates
  • Object.keys, values, entries