darkcris1
/ svelte-events.js
Created
August 20, 2021 14:20
An action for svelte to dynamically add listenera
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| export function getEventsAction() { | |
| const component = get_current_component(); | |
| return node => { | |
| const events = Object.keys(component.$$.callbacks); | |
| const listeners = []; | |
| events.forEach( | |
| event => listeners.push( | |
| listen(node, event, e => bubble(component, e)) | |
| ) |
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| const letterExhange = { | |
| a: 1, | |
| b: 2, | |
| c: 3, | |
| d: 4, | |
| e: 5, | |
| f: 6, | |
| g: 7, | |
| h: 8, | |
| i: 9, |
darkcris1
/ npm-browser.js
Last active
February 27, 2021 16:16
Install a npm package with udm type only in the browser
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| /** | |
| * This will return true if the value is some of the items | |
| * @param {string} pkgName | |
| * @param {string} functionName | |
| * @param {function} callback | |
| */ | |
| function npm(pkgName,functionName,callback){ | |
| const http = new XMLHttpRequest(); |
darkcris1
/ onViewport.js
Created
February 7, 2021 10:56
Add a callback if the element is on the viewport
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| function onViewport(elem, callback, options = {}) { | |
| if (elem instanceof Element) elem = [elem] | |
| // Initial option | |
| // Unobserve the element if it is on the viewport for optimizing purposes | |
| const { abortEarly = true } = options | |
| let counter = 0 | |
| const observer = new IntersectionObserver((entries, self) => { | |
| entries.forEach((el) => { |
darkcris1
/ array-string-includes-polyfill.js
Created
January 27, 2021 10:46
Array.includes | String.includes Polyfill
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| if (!String.prototype.includes){ | |
| String.prototype.includes = function(value, fromIndex){ | |
| return this.indexOf(value, fromIndex || 0) > -1 | |
| } | |
| } | |
| if (!Array.prototype.includes){ | |
| Array.prototype.includes = function(value, fromIndex){ | |
| return this.indexOf(value, fromIndex || 0) > -1 | |
| } |
darkcris1
/ nodelist-htmlcollection-polyfill.js
Created
January 27, 2021 10:08
NodeList forEach polyfill for IE 11 | + HTMLCollection.forEach
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| // You can exclude this if you will not use it | |
| HTMLCollection.prototype.forEach = function (callback, thisArg) { | |
| Array.prototype.forEach.call(this, callback, thisArg || window) | |
| } | |
| if ('NodeList' in window && !NodeList.prototype.forEach) { | |
| NodeList.prototype.forEach = function (callback, thisArg) { | |
| Array.prototype.forEach.call(this, callback, thisArg || window) | |
| } |
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| function uuid(prefix = '', date = true) { | |
| let counter = 0 | |
| return { | |
| create: () => { | |
| return `${date ? Date.now().toString(16) : ''}${prefix}${counter++}` | |
| }, | |
| } | |
| } | |
| const uid = uuid('prefix') | |
| console.log(uid.create()) // 176dc698f58prefix0 |
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| function cConjecture(x) { | |
| const result = [] | |
| while (x > 1) { | |
| if (x % 2 === 0) { | |
| x = x / 2 | |
| result.push(x) | |
| } else { | |
| x = x * 3 + 1 | |
| result.push(x) | |
| } |
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| function solution(list) { | |
| const result = [] | |
| let str = [] | |
| for (let i = 0; i < list.length; i++) { | |
| if (list[i + 1] === list[i] + 1) { | |
| str.push(list[i]) | |
| } else { | |
| if (str.length < 2) { | |
| result.push(...str, list[i]) | |
| } else { |
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| function linearSolver(equation) { | |
| const equa = equation.split('=').map((x) => x.replace(/\s/g, '')) | |
| const hasX = equa.find((x) => /x/.test(x)) | |
| const noX = equa.find((x) => !/x/.test(x)) | |
| let x = 0 | |
| const errorMsg = 'Invalid Equation: ' + equation | |
| try { | |
| if (/\b\W/.test(hasX)) { | |
| const c = hasX.match(/(-|\+|)+(\d+x|x\d+)/)[0] |
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