tripolskypetr
/ jsxFactory.js
Last active
January 2, 2020 21:35
Custom JSX factory https://jsfiddle.net/tripolskypetr/7yfbxL29/
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| class JSX { | |
| static _indent = 0; | |
| static createElement(type = '', props = null, ...child) { | |
| return { | |
| type, | |
| props, | |
| child | |
| }; | |
| } | |
| static render({type, props, child}) { |
tripolskypetr
/ fillRect.html
Last active
January 2, 2020 21:37
Fill the rectangle colored with ones and stop at the border of zeros https://jsfiddle.net/tripolskypetr/u8nphfa5/
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Omg</title> | |
| </head> | |
| <body> | |
| <pre contenteditable> | |
| </pre> | |
| <p>X: <input type="number" value="3"></p> | |
| <p>Y: <input type="number" value="5"></p> |
tripolskypetr
/ orientedTree.js
Last active
January 2, 2020 21:41
Functional style oriented graph traversal https://jsfiddle.net/tripolskypetr/132am0bL/
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| // o <- end | |
| // / \ n | |
| // f g \ / | |
| // \ / m n | |
| // e \ / | |
| // | p | | |
| // h d \ / | |
| // \ | l | |
| // i c / | |
| // \ | k |
tripolskypetr
/ serverless.html
Last active
January 2, 2020 21:43
JS serverless fetch and upload image https://jsfiddle.net/tripolskypetr/7sfp4vuy/
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| <body> | |
| <script> | |
| (async function() { | |
| const fetchImage = async (url) => { | |
| const data = await fetch(url); | |
| const buffer = await data.arrayBuffer(); | |
| const blob = new Blob([buffer], { type: "image/png"}); | |
| return blob; | |
| } | |
| const sendImage = (blob, url = "http://foo.com/submitform.php", name = "image.png") => { |
tripolskypetr
/ ImageGenerator.js
Last active
January 2, 2020 21:45
JS lorem image https://jsfiddle.net/tripolskypetr/0ydt3xmk/
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| export default class ImageFactory { | |
| static _index = 0; | |
| static _colors = ["red", "orange", "yellow", "green", "skyblue", "blue", "cyan"]; | |
| static _increment() { | |
| const self = ImageFactory; | |
| return self._index = (++self._index > self._colors.length - 1) ? 0 : self._index; | |
| } | |
| static createImage(height = 100, width = 100) { | |
| const canvas = document.createElement("canvas"); | |
| const context = canvas.getContext("2d"); |
tripolskypetr
/ dragAndDropPerformance.html
Created
January 4, 2020 21:46
JavaScript DragAndDrop performance test https://jsfiddle.net/tripolskypetr/v437tjqs/
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Drag and drop</title> | |
| <style> | |
| .red { background-color: red; } | |
| .green { background-color: green; } | |
| .blue { background-color: blue; } | |
| .root { position: fixed; } | |
| .box { |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Drag and drop</title> | |
| <style> | |
| .ball { | |
| width: 200px; | |
| height: 200px; | |
| position: absolute; | |
| } |
tripolskypetr
/ navigation.html
Last active
January 8, 2020 00:55
CSS Horizontal navigation https://jsfiddle.net/tripolskypetr/n9Luqhgj/
tripolskypetr
/ stateReducerPattern.html
Created
January 9, 2020 19:08
The State Reducer Pattern between separated windows (window.open)
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Frame</title> | |
| </head> | |
| <body> | |
| <button>Send message</button> | |
| <script> | |
| (function() { |
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| (function() { | |
| const visualize = (target) => { | |
| const {x, y, height, width} = target.getBoundingClientRect(); | |
| const div = document.createElement('div'); | |
| [div.style.position, div.style.opacity, div.style.zIndex] = ['fixed', 0.5, 999]; | |
| [div.style.backgroundColor, div.style.border] = ['green', '1px solid black']; | |
| [div.style.height, div.style.width] = [`${height}px`, `${width}px`]; | |
| [div.style.left, div.style.top] = [`${x}px`, `${y}px`]; | |
| div.style.transition = 'opacity 0.5s'; | |
| div.className = 'visualizer'; |
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