随笔分类 - ECMAScript
摘要：https://kapeli.com/mdn_offline https://developer.mozilla.org/en-US/docs/MDN/About#Downloading_content https://stackoverflow.com/questions/9501882/mdn-
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posted @ 2020-11-28 08:11
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摘要：var fs=require('fs'); const lineReader = require('line-reader'); var reg = /<a href=.*?(?=('>))/g; var reg2 = /(?<=('>))[0-9a-z_A-Z]*?(?=<\/a)/g; /* l
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posted @ 2020-11-26 23:12
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摘要：instance Point.prototype Point.__proto__ Function.prototype Function.__proto__ Object.prototype Object.__proto__
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posted @ 2020-11-06 09:56
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摘要：   { this.x = x; this.y = y;
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posted @ 2020-11-05 22:32
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摘要：() => { const stringifyData = data => JSON.stringify(data, null, 2) const initialData = stringifyData({ data: null }) const [data, setData] = useState
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posted @ 2020-10-26 13:18
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摘要：A custom Hook is a JavaScript function whose name starts with ”use” and that may call other Hooks import { useEffect, useCallback } from "react"; // C
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posted @ 2020-10-26 13:16
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摘要：useMemo returns a memoized value. Pass a “create” function and an array of dependencies. useMemo will only recompute the memoized value when one of th
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posted @ 2020-10-26 13:15
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摘要：useLayoutEffect has the very same signature as useEffect. useLayoutEffect(effectFunction, arrayDependencies) () => { const [randomNumber, setRandomNum
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posted @ 2020-10-26 13:13
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摘要：useCallback returns a memoized callback. const memoizedCallback = useCallback(function, arrayDependency) const App = () => { const [age, setAge] = use
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posted @ 2020-10-26 13:12
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摘要：returns a 'ref' object. const refContainer = useRef(initialValueToBePersisted) Value is persisted in the refContainer.current property. values are acc
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posted @ 2020-10-26 13:10
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摘要：useReducer may be used as an alternative to useState. const [state, dispatch] = useReducer(reducer, initialState, lazyInitFunction) Ideal for complex
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posted @ 2020-10-26 13:08
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摘要：useContext saves you the stress of having to rely on a Context consumer. const contextValue = useContext(contextObject) // consuming context via a con
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posted @ 2020-10-26 13:07
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摘要：useEffect accepts a function which can perform any side effects. useEffect(effectFunction, arrayDependencies) 每次绘制都执行 Without an array dependency, the
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posted @ 2020-10-26 13:05
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摘要：useState lets you use local state within a function component. The setState function is used to update the state. It accepts a new state value and enq
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posted @ 2020-10-26 13:04
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摘要：插件安装 安装 Debugger for Chrome attach debug debug 模式启动chrome debug模式启动chrome，注意，chrome需要在path中存在，不存在配置下。 chrome --remote-debugging-port=9222 配置launch lau
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posted @ 2020-10-23 09:41
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摘要：const path = require('path'); const HtmlWebpackPlugin = require('html-webpack-plugin'); //installed via npm const webpack = require('webpack'); //to a
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posted @ 2020-08-12 16:05
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摘要：no network npm config set registry https://registry.npm.taobao.org/ npm config set disturl https://npm.taobao.org/dist/ npm config set electron_mirror
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posted @ 2020-08-12 15:56
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摘要：////////////////// //// debug模式启动浏览器 ////////////////// 以debug模式启动浏览器，才可以attach成功，启动前需要退出chrome Windows Right click the Chrome shortcut, and select pr
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posted @ 2018-07-31 11:55
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