Xah JS Blog. 2023-01 to 2023-12

• HTML: Syntax Basics

quite amazing, of the past 30 years, the only website that still did not require JavaScript is amazon.

• JS: Regular Expression Tutorial
• HTML: Definition List: dl dt dd

• JavaScript Brendan Eich on Fixing String Methods on Emoji (2019)

• Twitter Card and OpenGraph

• HTML Link Problem, _blank noopener noreferrer (2021)

• Windows sucks: Accidental Hide All Windows (2021)

• 🆕 Deno: Read File

• JS: String.prototype.split
• JS: String Operations

• JS: Assignment pattern (destructuring)

• Font Size Survey 2023
• Font Size Problem: CSS Size vs Visual Size (2018)

• CSS: Variable (custom property)
• HTML: the Root Element
• CSS: Computed Style

• 2023-11-15 brave browser now has a ai chatbot called Leo.

updates

• JS: Array (basics)
• JS: Array.prototype.slice (extract)
• JS: Array.prototype.splice (remove / insert slice)
• JS: Array.prototype.flatMap
• JS: Array.prototype.copyWithin

• JS: Object (basics)
• JS: let (variable declaration)

• CSS: type selector (tag name)

• JS: Xah Functions

• JS: Speed, Timing, Benchmark

• JS: Array.prototype.fill
• JS: Array Constructor
• JS: Sparse Array

• JS: Array (basics)
• JS: for-of Loop (iterable)
• JS: Reflect.construct

• JS: Array.prototype.flat
• JS: Array.prototype.flatMap

• JS: Convert Decimal, Hexadecimal
• 🆕 JS: Convert Decimal, Binary

• JS: Number.prototype.toString (Number to String)

updates

• JS: Xah Functions
• JS: Swap Object Key Value 📜
• JS: Semicolon

minor updates. added tip icon and warning icon.

• JavaScript in Depth
• JS: Conditional. if then else
• JS: Object Literal Expression
• JS: let (variable declaration)
• JS: “in” operator 👎
• JS: for-in Loop 👎
• JS: “delete” operator 👎
• JS: var (variable declaration) 👎
• JS: name hoisting (var name order)
• JS: Symbol Tutorial

• JS: “arguments” object in “function”
• JS: “function” declaration vs expression
• JS: Strict Mode

• JS: Array.prototype.sort
• JS: Test Array Equality
• JS: Test Equality
• JS: Double Equal Operator
• JS: Difference of isNaN vs Number.isNaN

• JS: “typeof” operator
• JS: What is Constructor
• JS: “instanceof” operator
• JS: “typeof”, “instanceof”, “.constructor”

• JS: Object.isExtensible 👎
• JS: Object .preventExtensions 👎
• JS: Object.isExtensible 👎
• JS: Object.seal
• JS: Object extensible, seal, freeze
• JS: Object .getOwnPropertyDescriptor 👎

• JS: Get Set Prototype
• JS: Object .prototype .__proto__ 👎
• JS: Prototype and Inheritance
• JS: Add Method to Prototype

• JS: RegExp.prototype.exec
• JS: String.prototype.match
• JS: String.prototype.matchAll
• JS: Regular Expression Flags

• JS: Date Tutorial
• JS: Date.parse

• JS DOM: Execution order of JavaScript in HTML (defer, async, module)
• JS DOM: Element Attribute Methods
• JS DOM: Node value

• HTML: Nested List
• HTML: Figure Tag

• CSS: Length Units
• CSS: All (reset, revert, default)
• CSS: Percentage value

• reviving this blog.
• because i find it convenient to put webdev related stuff here, e.g. JavaScript CSS HTML.