best-js-snippets

js and nodejs snippets
maochunguang
8,202
Flag as spam or malicious

best-js-snippets package

this is the best atom snippets of js that include es6, express ,String, nodejs-fs,nodejs-utils ,dom, and so on.

Note: this is a fork of turbo-javascript that uses arrow functions by default and adds more snippets for express,node-fs,dom-child and so on.

special statement

Note: the most common modules I use the shorCut to improve efficiency,but some uncommon modules are not necessary for us.So,I decided to use fullName to autocomplete uncommon modules .

nodejs-net,node-http,nodejs-dns,nodejs-crypto ,nodejs-stream and so on

net.
http.
dns.
crypto.
stream.
os.
queryString.
readline.
vm.
zlib.

// and so on

lodash snippets

_chunk⇥,_concat⇥ ,_drop⇥and so on

_.chunk(${1:array},${2:size});
_.concat(${1:array},${2:array2});
_.drop(${1:array},${2:size});

// and so on

js-Math snippets

Math.⇥ 

Math.abs(${1:value})
Math.ceil(${1:value})
Math.floor(${1:value})
Math.max(${1:value})

// and so on

js-Number snippets

Number.⇥ 

Number.isNaN()
Number.isFinite()
Number.parseInt(${1:num})

// and so on

nodejs-assert snippets

assert.⇥ 

assert.equal(${1:actual}, ${2:expected});
assert.notEqual(${1:actual}, ${2:expected});
assert.ok(${1:actual});
assert.ifError(${1:actual});

// and so on

nodejs-process snippets

process.⇥ 

process.abort()
process.arch
process.uptime()

// and so on

nodejs-path snippets

path.⇥ 

path.basename('${1:pathname}')
path.dirname('${1:pathname}')
path.format(${1:pathname})
path.join('${1:pathname}','${2:name}')
path.parse(${1:pathname})
// and so on

Express snippets

aget⇥,apos⇥,aall⇥,adel⇥, aput⇥ 

app.get('${1:path}', (req, res, next) => {
});
......
app.put('${1:path}', (req, res, next) => {
});

rqa⇥,rqb⇥,rqc⇥,rqg⇥,rqh⇥,rqi⇥,

var ${1:body} = req.accepts("${2:name}");
var ${1:body} = req.body;
var ${1:cookie} = req.cookie;
var ${1:key} = req.get("${2:name}");
var ${1:host} = req.hostname;
var ${1:ip} = req.ip;

rqm⇥,rqp⇥,rqpa⇥,rqpr⇥,rqpt⇥ 

var ${1:method} = req.method;
var ${1:param} = req.params;
var ${1:path} = req.path;
var ${1:protocol} = req.protocol;
var ${1:path} = req.path;

String snippets

sle⇥,chat⇥,charCodeAt⇥,includes⇥,an so on,method fullName string method

${1:value}.length;
${1:value}.charAt(${2:index});
${1:value}.charCodeAt(${2:index});
${1:value}.concat(${2:index});
${1:value}.includes(${2:index});
${1:value}.indexOf(${2:index});
${1:value}.lastIndexOf(${2:index});
${1:value}.startsWith(${2:index});
${1:value}.endsWith(${2:index});
${1:value}.localeCompare(${2:index});
${1:value}.match(${2:index});
${1:value}.replace(${1:str}, ${2:reg}, '${3:newStr}');
${1:value}.repeat(${2:index});
${1:value}.search(${2:index});
${1:value}.slice(${2:begin},${3:end});
${1:value}.split(${2:index});
${1:value}.substr(${2:start},${3:length});
${1:value}.substring(${2:begin},${3:end});
${1:value}.toUpperCase();
${1:value}.toLowerCase();
${1:value}.trim();
${1:value}.toString();

nodejs-fs snippets

fswrite⇥,fswrites⇥,fsread⇥,fsreads⇥,fsexists⇥,fsexistss⇥ 

fs.writeFile(${1:filename}, ${2:content});
fs.writeFileSync(${1:filename}, ${2:content});
fs.readFile(${1:filename}, ${2:charset});
fs.readFileSync(${1:filename}, ${2:charset});
fs.exists(${0:filename});
fs.existsSync(${0:filename});

nodejs-utils snippets

isa⇥,isbo⇥,isbu⇥,isd⇥,ise⇥,isf⇥,isn⇥,isnm⇥,iso⇥,isr⇥,iss⇥,issy⇥,isun⇥, util typeof Object

util.isArray(${1:name});
util.isBoolean(${1:name});
util.isBuffer(${1:name});
util.isDate(${1:name});
util.isError(${1:name});
util.isFunction(${1:name});
util.isNull(${1:name});
util.isNumber(${1:name});
util.isObject(${1:name});
util.isRegExp(${1:name});
util.isString(${1:name});
util.isSymbol(${1:name});
util.isUndefined(${1:name});

Declarations

v⇥ ve⇥ ,var statement

var ${1:name};
var ${1:name} = ${2:value};

l⇥ ,le⇥ let statement

let ${1:name};
let ${1:name} = ${2:value};

co⇥ ,coe⇥,cos⇥ const statement

const ${1:name};
const ${1:name} = ${2:value};
const ${1:name} = Symbol('${1:name}');

Flow Control

if⇥,el⇥ , ife⇥ ,ei⇥ if else statement

//if⇥ 
if (${1:condition}) {
  ${0}
}
//el⇥ 
else {
  ${0}
}
//ife⇥ 
if (${1:condition}) {
  ${2}
} else {
  ${3}
}
//ei⇥ 
else if (${1:condition}) {
  ${0}
}

fl⇥ for loop

for (let ${1:i} = 0; ${1:i} < ${2:iterable}${3:.length}; ${1:i}++) {
  ${4}
}

fi⇥ for in loop

for (let ${1:key} in ${2:source}) {
  if (${2:source}.hasOwnProperty(${1:key})) {
    ${0}
  }
}

fo⇥ for of loop (ES6)

for (let ${1:key} of ${2:source}) {
  ${0}
}

wl⇥ while loop

while (${1:condition}) {
  ${0}
}

tc⇥ try/catch

try {
  ${1}
} catch (${2:err}) {
  ${3}
}

tf⇥ try/finally

try {
 ${1}
} finally {
 ${2}
}

tcf⇥ try/catch/finally

try {
  ${1}
} catch (${2:err}) {
  ${3}
} finally {
  ${4}
}

Functions

f⇥ anonymous function

function (${1:arguments}) {${0}}

fn⇥ named function

function ${1:name}(${2:arguments}) {
  ${0}
}

iife⇥ immediately-invoked function expression (IIFE)

((${1:arguments}) => {
  ${0}
})(${2});

fa⇥ ,fb⇥,fc⇥, function apply,bind,call

${1:fn}.apply(${2:this}, ${3:arguments})
${1:fn}.bind(${2:this}, ${3:arguments})
${1:fn}.call(${2:this}, ${3:arguments})

af⇥,afb⇥ arrow function (ES6)

//`af⇥` 
${1:(arguments)} => ${2:statement}
//`afb⇥` 
${1:(arguments)} => {
\t${0}
}

gf⇥,gfn⇥ generator function (ES6)

function* (${1:arguments}) {
  ${0}
}
function* ${1:name}(${1:arguments}) {
  ${0}
}

Iterables

fe⇥ forEach loop (chainable)

${1:iterable}.forEach((${2:item}) => {
  ${0}
});

map⇥ map function (chainable)

${1:iterable}.map((${2:item}) => {
  ${0}
});

reduce⇥ reduce function (chainable)

${1:iterable}.reduce((${2:previous}, ${3:current}) => {
  ${0}
}${4:, initial});

filter⇥ filter function (chainable)

${1:iterable}.filter((${2:item}) => {
  ${0}
});

find⇥ ES6 find function (chainable)

${1:iterable}.find((${2:item}) => {
  ${0}
});

Objects and classes

c⇥ class (ES6)

class ${1:name} {
  constructor(${2:arguments}) {
    ${0}
  }
}

cex⇥ child class (ES6)

class ${1:name} extends ${2:base} {
  constructor(${2:arguments}) {
    super(${2:arguments})
    ${0}
  }
}

cf⇥ class function (ES6)

{$1:name}({$2:arguments}) {
  ${0}
}

kv⇥ key/value pair

Javascript:

${1:key}: ${2:'value'}

m⇥ method (ES6 syntax)

${1:method}(${2:arguments}) {
  ${0}
}

get⇥,set⇥ getter ,setter (ES6 syntax)

get ${1:property}() {
  ${0}
}
set ${1:property}(${2:value}) {
  ${0}
}

gs⇥ getter and setter (ES6 syntax)

get ${1:property}() {
  ${0}
}
set ${1:property}(${2:value}) {
 
}

proto⇥ prototype method (chainable)

${1:Class}.prototype.${2:methodName} = function (${3:arguments}) {
  ${0}
};

Returning values

r⇥,rth⇥,rn⇥,rt⇥ ,rf⇥ ,r0⇥, r-1⇥ return

return ${0};    //`r⇥` 
return this;    //`rth⇥` 
return null;    //`rn⇥` 
return true;    //`rt⇥` 
return false;   //`rf⇥` 
return 0;       //`r0⇥` 
return -1;      //`r-1⇥` 
 

Types

S⇥ String

N⇥ Number

O⇥ Object

A⇥ Array

D⇥ Date

Rx⇥ RegExp

tof⇥ typeof comparison

typeof ${1:source} === '${2:undefined}'

iof⇥ instanceof comparison

${1:source} instanceof ${2:Object}

Promises

rp⇥ return Promise (ES6)

return new Promise((resolve, reject) => {
  ${0}
});

p⇥ new Promise (ES6)

new Promise((resolve, reject) => {
  ${0}
})

then⇥ Promise.then (chainable)

${1:promise}.then((${2:value}) => {
  ${0}
});

catch⇥ Promise.catch (chainable)

${1:promise}.catch((${2:err}) => {
  ${0}
});

ES6 modules

ex⇥ module export

export ${1:member};

im⇥ module import

import ${1:*} from '${2:module}';

ima⇥ module import as

import ${1:*} as ${2:name} from '${3:module}';

imn⇥ named module import

import \{ ${1:name} \} from '${2:module}';

BDD testing (Mocha, Jasmine, etc.)

desc⇥ describe

describe('${1:description}', () => {
  ${0}
});

its⇥ synchronous "it"

it('${1:description}', () => {
  ${0}
});

ita⇥ asynchronous "it"

it('${1:description}', (done) => {
  ${0}
});

bef⇥ before

before(() => {
  ${0}
});

befe⇥ beforeEach

beforeEach(() => {
  ${0}
});

aft⇥ after

after(() => {
  ${0}
});

afte⇥ afterEach

afterEach(() => {
  ${0}
});

Console

cl⇥,cll⇥, ce⇥,ct⇥,cte⇥,cw⇥ console.log

console.log('${1:title}', ${2:$1}$0);
console.log(${0});
console.error(${0});
console.time(${0});
console.timeEnd(${0});
console.warn(${0});

Timers

st⇥,si⇥ ,sim⇥ setTimeout,setInterval

//`st⇥` 
setTimeout(() => {
  ${0}
}, ${1:delay});
//`si⇥` 
setTimeout(() => {
  ${0}
}, ${1:delay});
//`sim⇥` 
setImmediate(() => {
  ${0}
});

DOM specifics

ae⇥ addEventListener

${1:document}.addEventListener('${2:event}', function (e) {
  ${0}
});

ga⇥,ra⇥ , ac⇥,rc⇥ get,setAttribute,append,removeChild

${1:document}.getAttribute('${2:id}')
${1:document}.removeAttribute('${2:attr}');
${1:document}.appendChild(${2:elem});
${1:document}.removeChild(${2:elem});

gi⇥ getElementById

${1:document}.getElementById('${2:id}')

gc⇥ getElementsByClassName

Array.from(${1:document}.getElementsByClassName('${2:class}'))

Array.from polyfill required for ES5

gt⇥ getElementsByTagName

Array.from(${1:document}.getElementsByTagName('${2:tag}'))

Array.from polyfill required for ES5

qs⇥ querySelector

${1:document}.querySelector('${2:selector}')

qsa⇥ querySelectorAll

Array.from(${1:document}.querySelectorAll('${2:selector}'))

Array.from polyfill required for ES5

Node.js specifics

cb⇥ Node.js style callback

(err${1:, value}) => {${0}}

re⇥ require a module

require('${1:module}');

em⇥ export member

exports.${1:name} = ${2:value};

me⇥ module.exports

module.exports = ${1:name};

on⇥ attach an event handler (chainable)

${1:emitter}.on('${2:event}', (${3:arguments}) => {
  ${0}
});

Miscellaneous

us⇥ use strict

'use strict';

License

The MIT License (MIT) Copyright (c) 2016 maochunguang