Xah Web Dev Blog Archive 2023-01

• 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

• Brendan Eich on Fixing JavaScript String Methods Fail on Emoji

• Twitter Card and OpenGraph

• HTML Link Problem, _blank noopener noreferrer (2021)

• Windows Problem: Accidental Hide All Windows (2021)

• 🆕 Deno: Read File

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

• JS: Destructuring Assignment

• Font Size Survey 2023
• Font Size Problem: CSS Size vs Visual Size

• 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 and add at index)
• JS: Array.prototype.flatMap
• JS: Array.prototype.copyWithin

• JS: Object (basics)
• JS: let

• CSS: Selector: Match 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
• 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 Basics
• JS: Conditional. if then else
• JS: Object Literal Expression
• JS: let
• JS: in (operator) ❌
• JS: for-in Loop ❌
• JS: delete (operator) ❌
• JS: var ❌
• JS: var Declaration Order (Name Hoisting)
• JS: Symbol Tutorial

• JS: arguments (object)
• 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 window.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: Prevent Adding Property
• 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: Load JS in HTML (defer, async, module)
• JS DOM: Element Attribute Methods
• JS DOM: Node value

• HTML: Nested List
• HTML: Figure Tag

• CSS: Length Units
• CSS: Reset, Default Values
• CSS: Percentage Value

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