50 个让你高效编程的前端轮子

https://www.npmjs.com/package/cross-env

==功能==：cross-env这是一款运行跨平台设置和使用环境变量的脚本。

npm install --save-dev cross-env

{

“scripts”: {

“parentScript”: “cross-env GREET=“Joe” npm run childScript”,

“childScript”: “cross-env-shell “echo Hello $GREET””

}

bignumber.js

https://www.npmjs.com/package/bignumber.js

==功能==：一个用于任意精度十进制和非十进制算术的JavaScript库

https://mikemcl.github.io/bignumber.js/

https://juejin.cn/post/6844903704714280968###heading-7

QRCode.js、 qrcode.vue

https://www.npmjs.com/package/qrcodejs2

https://www.npmjs.com/package/qrcode.vue

==功能==：

npm install --save qrcode.vue

npm i qrcodejs2

getBlob(base64) {

const mimeString = base64.split(‘,’)[0].split(‘:’)[1].split(‘;’)[0]; // mime类型

const byteString = atob(base64.split(‘,’)[1]); // base64 解码

const arrayBuffer = new ArrayBuffer(byteString.length); // 创建缓冲数组

const intArray = new Uint8Array(arrayBuffer); // 创建视图

for (let i = 0; i < byteString.length; i += 1) {

intArray[i] = byteString.charCodeAt(i);

}

return new Blob([intArray], {

type: mimeString,

});

savePicture(Url = this.qrcodeUrl) {

const blob = new Blob([‘’], { type: ‘application/octet-stream’ });

const url = URL.createObjectURL(blob);

const a = document.createElement(‘a’);

a.href = Url;

// eslint-disable-next-line prefer-destructuring

a.download = Url.replace(/(./)([^.]+.*)/gi, ‘$2’).split(‘?’)[0];

const e = document.createEvent(‘MouseEvents’);

e.initMouseEvent(

‘click’,

true,

false,

window,

false,

null,

);

a.dispatchEvent(e);

URL.revokeObjectURL(url);

_qrcode(url) {

const div = document.createElement(‘div’);

// eslint-disable-next-line new-cap

const code = new QRCode(div, {

text: url,

width: 500,

height: 500,

colorDark: ‘###000000’,

colorLight: ‘###ffffff’,

correctLevel: QRCode.CorrectLevel.L,

});

// 这里如果需要在页面上展示的话，就将div节点给添加到dom树上去；node.appendChild(div)

const canvas = code._el.querySelector(‘canvas’); // 获取生成二维码中的canvas，并将canvas转换成base64

const base64Text = canvas.toDataURL(‘image/png’);

const blob = this.getBlob(base64Text); // 将base64转换成blob对象

return window.URL.createObjectURL(blob);

cssnano、js-beautify

https://www.npmjs.com/package/cssnano

https://www.npmjs.com/package/js-beautify

==功能==：css js 压缩工具

cors node

https://www.npmjs.com/package/cors

==功能==：CORS是一个node.js软件包，用于提供可用于通过各种选项启用CORS的Connect / Express中间件。

npm install cors

var cors = require(‘cors’);

app.use(

cors({

origin: [‘http://localhost:8000’],

methods: [‘GET’, ‘POST’],

alloweHeaders: [‘Conten-Type’, ‘Authorization’],

})

);

countup.js

https://www.npmjs.com/package/countup.js

==功能==：数字滚动插件使用方法详解

npm i countup.js

interface CountUpOptions {

startVal?: number; // number to start at (0)

decimalPlaces?: number; // number of decimal places (0)

duration?: number; // animation duration in seconds (2)

useGrouping?: boolean; // example: 1,000 vs 1000 (true)

useEasing?: boolean; // ease animation (true)

smartEasingThreshold?: number; // smooth easing for large numbers above this if useEasing (999)

smartEasingAmount?: number; // amount to be eased for numbers above threshold (333)

separator?: string; // grouping separator (‘,’)

decimal?: string; // decimal (‘.’)

// easingFn: easing function for animation (easeOutExpo)

easingFn?: (t: number, b: number, c: number, d: number) => number;

formattingFn?: (n: number) => string; // this function formats result

prefix?: string; // text prepended to result

suffix?: string; // text appended to result

numerals?: string[]; // numeral glyph substitution

}

js-base64

https://www.npmjs.com/package/js-base64

==功能==：另一个Base64转码器。

npm install --save js-base64

require=require(‘esm’)(module);

import {Base64} from ‘js-base64’;

let latin = ‘dankogai’;

let utf8 = ‘小飼弾’

let u8s = new Uint8Array([100,97,110,107,111,103,97,105]);

Base64.encode(latin); // ZGFua29nYWk=

Base64.btoa(latin); // ZGFua29nYWk=

Base64.btoa(utf8); // raises exception

Base64.fromUint8Array(u8s); // ZGFua29nYWk=

Base64.fromUint8Array(u8s, true); // ZGFua29nYW which is URI safe

Base64.encode(utf8); // 5bCP6aO85by+

Base64.encode(utf8, true) // 5bCP6aO85by-

Base64.encodeURI(utf8); // 5bCP6aO85by-

json-bigint

https://www.npmjs.com/package/json-bigint

==功能==：Native Bigint是最近添加到JS的，因此我们添加了一个利用它的选项，而不是bignumber.js。但是，使用本机BigInt进行解析仍然是向后兼容的选项。

var JSONbig = require(‘json-bigint’);

var json = ‘{ “value” : 9223372036854775807, “v2”: 123 }’;

console.log(‘Input:’, json);

console.log(‘’);

console.log(‘node.js built-in JSON:’);

var r = JSON.parse(json);

console.log('JSON.parse(input).value : ', r.value.toString());

console.log(‘JSON.stringify(JSON.parse(input)):’, JSON.stringify®);

console.log(‘\n\nbig number JSON:’);

var r1 = JSONbig.parse(json);

console.log('JSONbig.parse(input).value : ', r1.value.toString());

console.log(‘JSONbig.stringify(JSONbig.parse(input)):’, JSONbig.stringify(r1));

vuejs-datetimepicker

https://www.npmjs.com/package/vuejs-datetimepicker

==功能==：

npm install vuejs-datetimepicker

vue-meta-info

https://www.npmjs.com/package/vue-meta-info

==功能==：基于Vue 2.0 的单页面 meta info 管理.

…

vue-smooth-scroll

https://www.npmjs.com/package/vue-smooth-scroll

==功能==：Scroll

npm install --save vue-smooth-scroll

import vueSmoothScroll from ‘vue-smooth-scroll’

Vue.use(vueSmoothScroll)

prismjs

https://www.npmjs.com/package/prismjs

==功能==：Prism是一个轻量，健壮，优雅的语法高亮库。这是Dabblet的衍生项目。

vuex-persistedstate

https://www.npmjs.com/package/vuex-persistedstate

==功能==：

npm install --save vuex-persistedstate

import createPersistedState from ‘vuex-persistedstate’;

import * as Cookies from ‘js-cookie’;

import cookie from ‘cookie’;

export default ({ store, req }) => {

createPersistedState({

paths: […],

storage: {

getItem: (key) => {

// See https://nuxtjs.org/guide/plugins/###using-process-flags

if (process.server) {

const parsedCookies = cookie.parse(req.headers.cookie);

return parsedCookies[key];

} else {

return Cookies.get(key);

}

// Please see https://github.com/js-cookie/js-cookie###json, on how to handle JSON.

setItem: (key, value) =>

Cookies.set(key, value, { expires: 365, secure: false }),

removeItem: key => Cookies.remove(key)

}

})(store);

};

vue-slider-component

https://github.com/NightCatSama/vue-slider-component/blob/master/README-CN.md

==功能==：一个高度定制化的滑块组件

$ yarn add vue-slider-component

### npm install vue-slider-component --save

CodeMirror

https://www.npmjs.com/package/codemirror

==功能==：CodeMirror是使用JavaScript为浏览器实现的多功能文本编辑器。它专门用于编辑代码，并具有100多种语言模式和各种插件，可实现更高级的编辑功能。每种语言都带有功能齐全的代码和语法高亮显示，以帮助阅读和编辑复杂代码。

vue-codemirror

https://www.npmjs.com/package/vue-codemirror

==功能==：

<codemirror

ref=“editQuerySQL”

@ready=“onCodemirrorReady”

@input=“onCodemirrorInput”

v-model=“query.sql”

:options=“cmOptions”

import { codemirror } from ‘vue-codemirror’;

import { getEthdb } from ‘@/api’;

import ‘codemirror/lib/codemirror.css’;

import ‘codemirror/theme/idea.css’;

// import ‘codemirror/theme/base16-dark.css’;

import ‘codemirror/theme/panda-syntax.css’;

import ‘codemirror/addon/hint/show-hint.css’;

import ‘codemirror/lib/codemirror’;

import ‘codemirror/mode/sql/sql’;

import ‘codemirror/addon/hint/show-hint’;

import ‘codemirror/addon/hint/sql-hint’;

export default {

data(){

retrun {

query: {

sql: ‘SELECT * FROM ethblock LIMIT 200’,

cmOptions: {

scroll: false,

tabSize: 4,

lineNumbers: false,

line: false,

indentWithTabs: true,

smartIndent: true,

autofocus: false,

mode: ‘text/x-mariadb’,

theme: ‘idea’,

hintOptions: {

completeSingle: false,

}

methods:{

onCodemirrorReady(cm) {

cm.on(‘keypress’, () => {

cm.showHint();

});

onCodemirrorInput(newQuery) {

this.query.sql = newQuery;

}

portfinder || get-port node

https://www.npmjs.com/package/portfinder

https://www.npmjs.com/package/get-port

==功能==：端口查看器

[sudo] npm install portfinder

portfinder.getPort({

port: 3000, // minimum port

stopPort: 3333 // maximum port

}, callback);

regedit node

https://www.npmjs.com/package/regedit

==功能==：使用node.js和Windows脚本宿主对Windows注册表进行读取，写入，列出和处理各种时髦的事情。

lowdb

https://www.npmjs.com/package/lowdb

==功能==：适用于Node，Electron和浏览器的小型JSON数据库。由Lodash驱动。⚡️

npm install lowdb

const low = require(‘lowdb’)

const FileSync = require(‘lowdb/adapters/FileSync’)

const adapter = new FileSync(‘db.json’)

const db = low(adapter)

// Set some defaults

db.defaults({ posts: [], user: {} })

.write()

// Add a post

db.get(‘posts’)

.push({ id: 1, title: ‘lowdb is awesome’})

.write()

// Set a user using Lodash shorthand syntax

db.set(‘user.name’, ‘typicode’)

.write()

cheerio node

https://github.com/cheeriojs/cheerio/wiki/Chinese-README

==功能==：为服务器特别定制的，快速、灵活、实施的jQuery核心实现. 爬虫

npm install cheerio

const cheerio = require(‘cheerio’);

const $ = cheerio.load(‘

Hello world

’);

$(‘h2.title’).text(‘Hello there!’);

$(‘h2’).addClass(‘welcome’);

$.html();

//=>

Hello there!

libxmljs

https://github.com/libxmljs/libxmljs/wiki

==功能==：解析xml

node-fetch、 got node

https://github.com/node-fetch/node-fetch

https://github.com/sindresorhus/got###readme

==功能==：node-ajax

ora node

https://www.npmjs.com/package/ora

==功能==：优雅的终端旋转器

const ora = require(‘ora’);

const spinner = ora(‘Loading unicorns’).start();

setTimeout(() => {

spinner.color = ‘yellow’;

spinner.text = ‘Loading rainbows’;

}, 1000);

node-mkdirp 、rimraf node

https://github.com/substack/node-mkdirp

https://www.npmjs.com/package/rimraf

==功能==：Like mkdir -p UNIX 命令 rm-rf . nodejs 新建创建文件

var mkdirp = require(‘mkdirp’);

mkdirp(‘/tmp/foo/bar/baz’, function (err) {

if (err) console.error(err)

else console.log(‘pow!’)

});

shelljs

https://www.npmjs.com/package/shelljs

==功能==：hellJS是在Node.js API之上的Unix shell命令的可移植（Windows / Linux / OS X）实现。您可以使用它消除shell脚本对Unix的依赖，同时仍然保留其熟悉而强大的命令。您还可以全局安装它，以便可以从Node项目外部运行它-告别那些讨厌的Bash脚本！

var shell = require(‘shelljs’);

if (!shell.which(‘git’)) {

shell.echo(‘Sorry, this script requires git’);

shell.exit(1);

}

// Copy files to release dir

shell.rm(‘-rf’, ‘out/Release’);

shell.cp(‘-R’, ‘stuff/’, ‘out/Release’);

// Replace macros in each .js file

shell.cd(‘lib’);

shell.ls(‘*.js’).forEach(function (file) {

shell.sed(‘-i’, ‘BUILD_VERSION’, ‘v0.1.2’, file);

shell.sed(‘-i’, /^.REMOVE_THIS_LINE.$/, ‘’, file);

shell.sed(‘-i’, /.REPLACE_LINE_WITH_MACRO.\n/, shell.cat(‘macro.js’), file);

});

shell.cd(‘…’);

shx

https://www.npmjs.com/package/shx

==功能==：Shx 是一个包装 ShellJS Unix 命令的包装器，为 npm 包脚本中简单的类 Unix 跨平台命令提供了一个简单的解决方案

ShellJS: Good for writing long scripts, all in JS, running via NodeJS (e.g. node myScript.js).
shx: Good for writing one-off commands in npm package scripts (e.g. “clean”: “shx rm -rf out/”).

npm install shx --save-dev

package.json:

{

“scripts”: {

“clean”: “shx rm -rf build dist && shx echo Done”

}

node-ssh

https://github.com/steelbrain/node-ssh###readme

==功能==：Node-SSH 是 ssh2的一个非常轻量级的 Promise 包装器。

chalk

https://github.com/chalk/chalk

==功能==：给终端嵌套您想要的样式。

const chalk = require(‘chalk’);

const log = console.log;

// Combine styled and normal strings

log(chalk.blue(‘Hello’) + ’ World’ + chalk.red(‘!’));

// Compose multiple styles using the chainable API

log(chalk.blue.bgRed.bold(‘Hello world!’));

// Pass in multiple arguments

log(chalk.blue(‘Hello’, ‘World!’, ‘Foo’, ‘bar’, ‘biz’, ‘baz’));

// Nest styles

log(chalk.red(‘Hello’, chalk.underline.bgBlue(‘world’) + ‘!’));

// Nest styles of the same type even (color, underline, background)

log(chalk.green(

'I am a green line ’ +

chalk.blue.underline.bold(‘with a blue substring’) +

’ that becomes green again!’

));

Nzh

https://blog.whyoop.com/nzh/docs/###/

==功能==：适用于需要转换阿拉伯数字与中文数字的场景。特点如下:

以字符串的方式转换，没有超大数及浮点数等问题(请自行对原数据进行四舍五入等操作)
支持科学记数法字符串的转换
支持口语化
支持自定义转换(不论是兆,京还是厘都可以用)
对超大数支持用争议教少的万万亿代替亿亿
当然,你还可以把中文数字再转回阿拉伯数字

npm install nzh --save

var Nzh = require(“nzh”);

var nzhcn = require(“nzh/cn”); //直接使用简体中文

var nzhhk = require(“nzh/hk”); //繁体中文

var nzhcn = Nzh.cn; // 使用简体中文, 另外有 Nzh.hk – 繁体中文

nzhcn.encodeS(100111); // 转中文小写 >> 十万零一百一十一

nzhcn.encodeB(100111); // 转中文大写 >> 壹拾万零壹佰壹拾壹

nzhcn.encodeS(“1.23456789e+21”); // 科学记数法字符串 >> 十二万三千四百五十六万万七千八百九十万亿

nzhcn.toMoney(“100111.11”); // 转中文金额 >> 人民币壹拾万零壹佰壹拾壹元壹角壹分

decko

https://github.com/developit/decko

节流防抖https://blog.csdn.net/qq_2955…功能：三个最有用的装饰器的简洁实现：

@bind：this在方法内使常量的值
@debounce：限制对方法的调用
@memoize：根据参数缓存返回值

npm i -S decko

p-queue

https://github.com/sindresorhus/p-queue###readme

==功能==：对限制速率的异步（或同步）操作很有用。例如，在与REST API交互时或在执行CPU /内存密集型任务时。

const {default: PQueue} = require(‘p-queue’);

const got = require(‘got’);

const queue = new PQueue({concurrency: 1});

(async () => {

await queue.add(() => got(‘https://sindresorhus.com’));

console.log(‘Done: sindresorhus.com’);

})();

(async () => {

await queue.add(() => got(‘https://avajs.dev’));

console.log(‘Done: avajs.dev’);

})();

(async () => {

const task = await getUnicornTask();

await queue.add(task);

console.log(‘Done: Unicorn task’);

})();

sleep

https://www.npmjs.com/package/sleep

==功能==：sleep

npm i sleep

var sleep = require(‘sleep’);

function msleep(n) {

Atomics.wait(new Int32Array(new SharedArrayBuffer(4)), 0, 0, n);

}

function sleep(n) {

msleep(n*1000);

}

delay

https://github.com/sindresorhus/delay###readme

==功能==：将承诺推迟一定的时间

npm install delay

const delay = require(‘delay’);

(async () => {

bar();

await delay(100);

// Executed 100 milliseconds later

baz();

})();

better-scroll

https://github.com/ustbhuangyi/better-scroll

==功能==：BetterScroll 是一款重点解决移动端（已支持 PC）各种滚动场景需求的插件。它的核心是借鉴的 iscroll 的实现，它的 API 设计基本兼容 iscroll，在 iscroll 的基础上又扩展了一些 feature 以及做了一些性能优化。