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#jskata

Wolfram wants peacewolframkriesing@mastodontech.de
2024-10-24

Wanna try and play around with `Object.groupBy()`, which is new pretty in #JavaScript go to
jskatas.org/katas/es15/languag 🚀

#jskata #learning #javascript #testdriven

Showing all the katas, the new one is Object.groupBy()
Wolfram wants peacewolframkriesing@mastodontech.de
2024-10-24

The #jskata for this is in the making.
Get ahead by learning all the other 132 katas on jskatas.org

#learning #javascript #testdriven

Wolfram wants peacewolframkriesing@mastodontech.de
2024-10-18

Also inspired by our last night's #jslang #meetup I built a #JSKata for you all to practice #JavaScript Proxy a bit.
The basics:

jskatas.org/katas/es6/language

#testDriven #tests #kata #koan #learn

Wolfram wants peacewolframkriesing@mastodontech.de
2024-03-27

A new #jskata for learning #JavaScript in depth.

I just released: "The Object() constructor called as a function."
And there are things to learn, even though I do #JS for many years already.

Have fun: jskatas.org/katas/es1/language

The Object() constructor called as a function the basics WHEN passing no argument to Object() THEN a new empty object is returned WHEN passing null THEN a new empty object is returned WHEN passing undefined THEN a new empty object is returned calling it with a complex type (or non-primitive) WHEN passing an existing (empty) object THEN that same object is returned WHEN passing an array THEN that same array is returned (because it is also "just" an object) calling it with a primitive WHEN calling it with true THEN it returns a new instance of a Boolean just like new Boolean(true) would WHEN calling it with 42 THEN it returns a new instance of a Number just like new Number(42) would WHEN calling it with a string THEN it returns a new instance of a String just like new String("abc") would
Wolfram wants peacewolframkriesing@mastodontech.de
2023-10-11

Interesting, `array.shift()` was introduced in ECMAScript 3 [1] in 1999, see chapter 15.4.4.9. At least it's not part of the v2 spec [2] from 1998. In v2 the last chapter in 15.4.4 is 15.4.4.5.

Expect a #jskata on `array.shift()` to come soon.

[1] ecma-international.org/wp-cont
[2] ecma-international.org/wp-cont

#JavaScript #specification #jskatas

Wolfram wants peacewolframkriesing@mastodontech.de
2023-09-03

As usual, when starting a new #jskata it starts out with one tiny thing and becomes five katas.
Three of them are done and will be online soon.

This time its all about bitwise shift operators. And I feel I just scratched the surface.

#learn #javascript #yourWay
#koans

bitwise-shift-operators all.js left-shift.js left-shift-in-depth.js right-shift.js unsigned-right-shift.js

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