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| const { parentPort } = require('worker_threads'); | |
| let b = 0; | |
| for (let i = 0; i < 1000; i++) { | |
| b += i; | |
| } | |
| parentPort.postMessage(b); |
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| const { Worker } = require('worker_threads'); | |
| const path = require('path'); | |
| const worker1 = new Worker(path.resolve('./worker.js')); | |
| worker1.on('message', (message) => { | |
| console.log('main thread get message', message); | |
| }); |
chnbohwr
/ setstate_wrong.js
Last active
June 20, 2018 02:20
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| state = { | |
| list: [] | |
| }; | |
| clickBtn = () => { | |
| this.state.list.push({ | |
| id: Math.random(), | |
| name: randomStr.generate(4) | |
| }); | |
| this.setState(this.state); |
chnbohwr
/ crackGame.js
Created
May 11, 2018 05:45
https://www.humanbenchmark.com/tests/reactiontime/
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| const ele = document.querySelector('body > div.hero > div > div.test-wrapper.ng-scope > div'); | |
| let flag = true; | |
| const mouseDownEvent = document.createEvent('MouseEvents'); | |
| mouseDownEvent.initEvent('mousedown', true, true); | |
| const observer = new MutationObserver((mutations) => { | |
| mutations.every((mutation) => { | |
| if(mutation.target.classList.contains('view-go') && flag){ | |
| ele.dispatchEvent(mouseDownEvent); | |
| flag = false; | |
| return false; |
chnbohwr
/ simulateMouseDown.js
Created
May 11, 2018 05:25
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| const mouseDownEvent = document.createEvent('MouseEvents'); | |
| mouseDownEvent.initEvent('mousedown', true, true); |
chnbohwr
/ MsgItem.js
Created
May 7, 2018 08:55
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| class MsgItem extends React.PureComponent { | |
| render() { | |
| return <li style={{ margin: "10px" }}> {this.props.msg} </li>; | |
| } | |
| } |
chnbohwr
/ component_performance.js
Created
May 7, 2018 07:02
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| import React, { Component } from 'react'; | |
| class MsgItem extends Component { | |
| render() { | |
| return <li style={{ margin: "10px" }}> {this.props.msg} </li>; | |
| } | |
| } | |
| export default class App extends Component { | |
| state = { messages: [] } |
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| const path = require('path'); | |
| const HtmlWebPackPlugin = require("html-webpack-plugin"); | |
| module.exports = { | |
| module: { | |
| rules: [ | |
| { | |
| test: /\.js$/, | |
| exclude: /node_modules/, | |
| use: ['babel-loader'] | |
| }, |
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| <!doctype html> | |
| <html ⚡> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script async src="https://cdn.ampproject.org/v0.js"></script> | |
| <title>Hello AMP world</title> | |
| <link rel="canonical" href="hello-world.html"> | |
| <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"> | |
| <style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-anim |
chnbohwr
/ selectsize.js
Created
November 24, 2017 08:31
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| const selectSize = (size) => { | |
| const selector = document.querySelector('#exp-pdp-buying-tools-container > form > div.exp-pdp-size-and-quantity-container > div > div.exp-pdp-size-dropdown-container.nsg-form--drop-down--option-container.selectBox-options.nsg-form--drop-down.exp-pdp-size-dropdown.exp-pdp-dropdown.two-column-dropdown.selectBox-dropdown-menu > ul'); | |
| const children = Array.from(selector.children); | |
| children.forEach(ele => { | |
| const rel = ele.getAttribute('rel'); | |
| if (rel.substring(rel.indexOf(':'), rel.length) === `:${size}`) { | |
| console.log('find ele', ele); | |
| $('select[name="skuAndSize"]').val(rel); | |
| $('#buyingtools-add-to-cart-button').click(); | |
| } |