xtodo JavaScript js

const xx = Array(4).fill(0).map((x, i) => x + i);
console.log(xx);
// [ 0, 1, 2, 3 ]

// yy = xx[Symbol.iterator];

// console.log( yy )

// console.log( yy() .next() )

console.log( xx[Symbol.iterator]().next(), );
// { value: 0, done: false }

console.log( xx[Symbol.iterator]().next(), );
// { value: 0, done: false }

/*
the complex javascript iterator generator interface fucks.

here, first is the complexity of no range function.
you got the fill method patch to deal with that.

then, am trying to deconstruct the iteratable interface, trying to get its next value.
but apparantly it resets.

very complex, because the iterable contains a property of type symbol, named Symbol.iterator.
it's value must be a function.
and it must return a object, this object must have a next property, and this property's value must be a function.
this is why u get this funky
xx[Symbol.iterator]().next()

its return value, is a object, that contains value and done keys.

yet, somehow it resets. am unable to get it to 0, 1, 2, 3, etc.
 */

2025-05-28

xtodo

2025-05-23

xtodo

JavaScript write tutorial on setTimeout and setInterval

2025-05-20

xtodo

JS: Regular Expression Tutorial

JS: String.prototype.search

2025-05-17

xtodo

JS DOM: Browser Window Object

JS DOM: Node Name

JS: Tagged Template String

JS: Round/Truncate Number

2025-05-08

JS: ECMAScript New Features

what's new in js 2022
https://x.com/i/grok/share/9EcaXLsckPXkiZ23QGbCjE9LO

ECMAScript version history#15th Edition – ECMAScript 2024

ecmascript 2022

bigint
number input forms

JavaScript Object Reference

x js object vs map 2024-10-17

2021-11-10

need to fix the char frequency. need more corpus Ergonomic Keyboard Layouts
Character Frequency Plot
2021-04-29 work in progress Bigram Calculator
2022-09-29 write code to count word frequency, of my site. and bigram. use golang and WolframLang
change char frequency chart diagram to svg. e.g. Myth of QWERTY vs Dvorak Layout , check all pages.
2021-05-20 change to svg Russian Keyboard Layout

2024-10-18

bigram calculator

2024-10-18

node.attributes JavaScript

2024-08-13

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script/type/importmap

2024-08-04

JS: Object.prototype.valueOf

JavaScript

2021-11-26 add how to add a style sheet on the page. See also: JS DOM: Change CSS. look at the code for unicode search.

2021-04-09 write a interactive converter Unicode: Full-Width Characters
2021-04-09 write a interactive JavaScript to compute bigram chart. What is the Most Efficient Keyboard Layout?

2023-10-31

2023-10-31 node.attributes JavaScript

2022-11-05

Georrg, 11/03/2022 @XahLee standard library has walk and walkSync functions

import { walkSync } from "https://deno.land/std@0.162.0/fs/walk.ts";

for (const entry of walkSync(".")) {
console.log(entry.path);
}

2022-09-26 JS: JSON.stringify, doc optional args
2022-09-26 JS: JSON.parse , doc optional args

2022-08-21 test innerText , and also more study on nodeValue JS DOM: textContent, innerHTML, innerText, nodeValue

2022-09-04 update jQuery Selector vs DOM querySelectorAll

2022-09-04 review JS DOM: textContent, innerHTML, innerText, nodeValue

2022-09-04 JavaScript Java class model vs JavaScript class model

2022-09-02 JavaScript maybe delete any mention of “also is a Iterator”

2022-08-31 group the object properties JS: Object.keys

Difference Between Implied Global and True Global Variable JS: Global Variable

2022-10-14 write a xah_is_map_equal and xah_is_set_equal

2022-07-28 JS: Symbol.prototype
2022-07-28 JS: String.raw

2022-03-30

a TypeScript and deno problem

// The problem. Save this as x.ts, then call deno run x.ts
// You get the error , shown in the other pane
// deno wants u to add typescript types, but the problem is, can't do it unless perhaps most of the types is any, or u mod the code so it have if statement to catch impractical errors such as out of bound index, empty string, etc
// The question is, how do u add type declaration, without changing ur code to add silly impractical error catching

const fCharStrToId = ((x) => x.codePointAt(0));
const fCharIdToStr = ((x) => (String.fromCodePoint(x)));
console.log(fCharStrToId("🦋"));
// 129419

/*
BUTTERFLY
ID 129419
HEXD 1F98B
UTF8  F0 9F A6 8B
UTF16 D83E DD8B
*/

2022-03-26 JavaScript obfusticate my unicode search code https://github.com/javascript-obfuscator/javascript-obfuscator

JavaScript deno walk dir https://deno.land/std@0.135.0/fs#expandglob

2022-03-14 JS: Symbol (class) need complete

need list of all unicode properties JS: Regex Unicode Property

2022-02-19 add how to use python to do it What Characters Are Unicode Letter • Python: Get Unicode Name, Code Point • Python: Unicode 🐍

2022-01-11 JavaScript svg, need to rewrite Emacs Key Layout Diagram

2021-12-17 JavaScript, write a syntax highlight. start perhaps for elisp. just do simple word highlight. use regex. highlight vars if possible. highlight comment. possibly even ignore string.

js TypeScript george 2022-04-19 — JavaScript TypeScript george 2022-04-19

2022-10-12

2021-05-20 . write JavaScript svg keyboard diagram

2022-10-12

write a js to generate keyboard svg diagram

;; 2022-04-03 There's a new notation for key, based on finger.
;; For example the qwerty e key is Lp2p1.
;; The notation is like this: [left or rigt hand][column number][row number].
;; L means left hand, R means right hand
;; Column position, pointing finger is 1, index is 2, ring finger is 3, pinky is 4, and so on in that direction. Thumb is 0. In the thumb direction is -1, -2 etc.
;; Row position, home row is 0. Above is 1, below is -1.
;; Positive number are written with p in front. Eg p1, p2. Zero is p0. Negative can be written with n in front, eg n1, n2.
;; This system is a notation system for keyboard physical layout, which also indicates associated finger for that key.
;; The advantage is that it's a logical system, not based on arbitrary table lookup.
;; Qwerty, dvorak, etc can then be mapped to this logical system.

a text diagram of letter layout map to fingerposition
qwerty letter map to fingerposition
dvorak letter map to fingerposition
fingerposition map to center of key

js todo 2021-11-21 tmKkW — JavaScript todo 2021-11-21 tmKkW

2021-11-15 create keyboard layout JavaScript
layout draw
Xah Talk Show Keyboard Heatmap JavaScript + SVG
Xah Talk Show 2020-09-26 JavaScript live coding keyboard layout heatmap

2026-02-02

xtodo

missing some. create new page for them.

Proxy does not have constructor property