helper

expand

Expand the system base type function

Number

padLeft

Number(1).padLeft(3) => "001" 
Number(123).padLeft(2) => "23"

String

firstUpperCase

'people'.firstUpperCase => People

firstLowerCase

'People'.firstLowerCase => people

label

"http://{0}/{1}".label("www.cmpp.com", "index.html")
=> "http://www.cmpp.com/index.html"

replaceAll(reallyDo, replaceWith, ignoreCase)

@reallyDo (String | RegExp) A string that is replaced
@replaceWidth (String) Replace the string
@ignoreCase (Boolean) Whether or not case is ignored

var str = "xxxXxxx";

console.log(str.replaceAll("x", 'a')); //print aaaXaaa
console.log(str.replaceAll("x", "a", true)); //print aaaaaaa

Array

isRepeat

Object

merge

merge two object property

var a = { foo: 'foo',name:'a'}
, b = { bar: 'bar',name:'b' };

a.merge(b);
// => { foo: 'foo', bar: 'bar',name:'b' }

==Notice==
Object.assign has the similar features

trim

clean up empty attributes

var o = {
    person: {
        id: null,
        name: 'pauly',
        age: 10
    },
    info: 'information',
    work: {
        love: null,
        year: 5,
        do: {
            fire: 'fire',
            gun: null
        }
    },
    mall: {
        book: null
    }
}

o.trim();

=>
{
    person: {
        name: "pauly",
        age: 10
    },
    info: "information",
    work: {
        year: 5,
        do: {
            fire: "fire"
        }
    }
}

Function

partial

similar the Function.bind, only the order of the parameters are different

function showArg(){
    console.log(arguments)
}; 

showArg.bind(null,1,2,3)(4,5) 
//print 1,2,3,4,5

showArg.partial(null,1,2,3)(4,5)
//print 4,5,1,2,3

Promise

wrap(done)

@done (Function) The done function
wrap the result {err,value}

async function show() {
    var res = await new Promise((resolve, reject) => {
        reject('error');
    }).wrap();

    console.log(res); //=> {err:'error'}
}

show();

Promise.arouse(asyncFn)

promisify asyncFunction

async function show(){ return "infomation";}

let promise = Promise.arouse(show);

type

var type = require('pz.helper').type;

name

console.log(type.name(123)); //print Number

is${Type} : isString,isNumber,isBoolean ...

type.isAsyncFunction(async function(){}) //=> true

qingmuAdore/nodejs_helper

helper

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type