es.shim

es.shim is an extend module for letting you can use some future api in current Node.js version. Also some useful api for you.

• Obejct

  • empty()

• Obejct.prototype

  • merge()

• Array.prototype

  • includes()

• Date

  • isDate()

• Date.prototype

  • getFullWeek()
  • getWeek()
  • format()

• String.prototype

  • splice()
  • htmlspecialchars()
  • tohtml()
  • xss()
  • escape()
  • padStart()
  • padEnd()

Usage

1. Object.prototype.merge()

let obj1 = {a: 123, b: 456}
let obj2 = {a: 22, c: 44}
let obj3 = {c: 11, e: 55}

o1.merge(o2)
// now obj1 is {a: 22, b: 456, c: 44}
// nothing to obj2 

o1.merge(o2, o3)
// obj1 will be {a: 22, b: 456, c: 11, e: 55}
// nothing to obj2 & obj3

2. Object.empty()

Object.empty({}) // true
Object.empty({a: 213}) // false
Object.empty([]) // true
Object.empty([null]) // false
Object.empty([undefined]) // false

3. Array.prototype.includes()

let arr = [1, '3', 54, 32, 'foo']

arr.includes(1) // true
arr.includes(3) // false
arr.includes('bar') // false
arr.includes('54') // false

4. Date.isDate()

Date.isDate(new Date()) // true
Date.isDate({}) // false
Date.isDate(['bar']) // false
Date.isDate('foo') // false

5. Date.prototype.format(format)

format can be these below:

• Y (with century) eg. 1970,2017
• y (without century) eg. 70, 117
• m month, 01-12
• n month, 1-12
• d date, 01-31
• j date, 1-31
• H hours 00-23
• h hours 00-12
• G hours 0-23
• g hours 0-12
• i minutes, 00-59
• s seconds, 00-59
• W how many weeks from 01-01 this year
• w how many weeks from 01 this month
• D week name, like Mon, Tue, Wed, Thu, Fri, Sat, Sun

new Date().format() // default 2017-02-08 12:11:23
new Date().format('Y-m-d') // 2017-02-08
new Date().format('Y/n/j') // 2017/2/8
new Date().format('Y年n月j日 第W周') // 2017年2月10日 第6周
new Date('Wed Feb 10 2016 23:34:04 GMT+0800 (CST)').format() // 2016-02-10 23:34:04
new Date('2016-08-10T13:14:44.000Z').format() //2016-08-10 21:14:44
new Date(1470834884000).format('') //2016-08-10 21:14:44

6. String.prototype.splice(start, len[, fill])

• start <Integer>
• len <Integer>
• fill <String>

let str = 'Hello baby';

str.splice(0, 5) // return  ' baby'
console.log(str) // nothing tostr, so it return 'Hello baby'

str.splice(0, 5, 'Love') //return 'Love baby'

str.splice(6, 0, 'world, ')// return 'Hello world, baby'

str = str.splice(6) //return  'Holle '

7. String.prototype.htmlspecialchars([sign])

Just like php's function - htmlspecialchars

• sign <String> (ENT_QUOTES/ENT_NOQUOTES)

let str = `<script>alert('hello world')</script>`

str.htmlspecialchars() // &lt;script&gt;alert('hello world')&lt;/script&gt;
str.htmlspecialchars('ENT_QUOTES') // &lt;script&gt;alert(&#39;hello world&#39;)&lt;/script&gt;

8. String.prototype.tohtml()

let str = `<script>alert('hello world')</script>`
str.tohtml() // <script>alert('hello world')</script>