js-usual-tools v1.0.6

Some common tools for javascript to improve your development efficiency

Browser support: Major Browsers and IE>=9

Installation

npm

npm install js-usual-tools --save

yarn

yarn add  js-usual-tools

Usage

ES6 module:

import usualTools from 'js-usual-tools'
usualTools.type('1') //string

//or

import {type} from 'js-usual-tools'
type([]) //array

CommonJS:：

const {deepClone} = require('js-usual-tools')
let obj = { name: "xtd", age: 23 };
let newObj = deepClone(obj);
console.log(newObj);

API

isPlainObject(obj)

判断是否为纯粹的对象，如{}为true，[]为false，参数obj为传入的对象，返回值为true或false

console.log(isPlainObject({})) //true
console.log(isPlainObject([])) //false
console.log(isPlainObject(new Date)) //false
console.log(isPlainObject(new RegExp)) //false

isEmpty(target)

判断传入的目标值是否为空，target为传入的目标值，返回值为true或fasle

console.log(isEmpty({})) //true
console.log(isEmpty([])) //true
console.log(isEmpty(null)) //true
console.log(isEmpty(undefined)) //true
console.log(isEmpty('xtd')) //false
console.log(isEmpty([''])) //false

type(target)

检测传入目标值的类型，target为传入的目标值，返回值为检测的类型

console.log(type({})) //object
console.log(type([])) //array
console.log(type(null)) //null
console.log(type(undefined)) //undefined
console.log(type('xtd')) //string
console.log(type(1)) //number

once(fn)

只执行一次函数，只有第一次的函数生效，如果该函数执行第二次将会返回第一次的结果。传入的fn为执行的函数

var sum = function (a,b) {
  return a+b;
}
var result = once(sum);
console.log(result(1,2)) //3
console.log(result(2,3)) //3

eq(a,b)

判断传入的俩个值是否相等，包括[]和[],{}和{}，a,b为比较的俩个值，返回的结果为true或false

console.log(eq(+1,1)) //true
console.log(eq(+0,-0)) //false
console.log(eq(1,1)) //true
console.log(eq([],[])) //true
console.log(eq({},{}))  //true 
console.log(eq([1,2],[1,2])) //true

debounce(fn,wait)

函数防抖。fn为传入的函数，wait为等待的时间

function load() {
    console.log(1);
}
window.addEventListener("scroll", debounce(load, 100));

randomNumber(min,max)

随机生成min到max之间的整数

console.log(randomNumber(10,50))

throttle(fn,delay)

函数节流。fn为传入的函数，delay为延迟的时间

function load() {
    console.log(1);
}
window.addEventListener("scroll", throttle(load, 100));

shuffle(arr)

洗牌算法（乱序算法），arr为传入的数组，返回值为乱序后的结果

console.log(shuffle([1,5,6,2,7,9,5,3,7,98,35,32])) // [5, 9, 5, 1, 98, 7, 3, 7, 32, 2, 6, 35]

countDown(time)

倒计时的实现。time为指定需要计算的时间 例如2020/2/7 12:00:00，返回值为object对象

console.log(countDown('2020/9/1 00:00:00')) //{days: 99, hours: 2, minutes: 12, seconds: 41}

trimAll(str)

去除字符串所有的空格，str为传入的字符串，返回去除后的结果

console.log(trimAll(' w sxt d')) //wsxtd

deepClone(obj)

对象的深克隆。obj为传入的对象。

let obj = { name: "xtd", age: 23 };
let newObj = deepClone(obj);
console.log(newObj);

getUrlQueryObj(url)

获取url中的query参数，url为传入的url，返回值为处理后的对象

console.log(getUrlQueryObj('http://tudoublog.com/api/students?name=xtd&age=23&gender=男')) //{name: "xtd", age: "23", gender: "男"}

eqNaN(source,target)

判断俩个NaN是否相等，source和target为传入的两个值，返回值为true或false

console.log(eqNaN(NaN,NaN)) //true

uuid()

生成UUID（唯一标识符），不保证不会出现相同字段，经过反复测试，重复的概率低于0.001%

console.log(uuid()) //19dade4f-e54f-40f2-97ad-e7326308f725

toArray(arr)

将类数组对象转换为真正的数组，arr为传入的类数组对象，返回值为数组

var arrayLike = {0:'hhh',1:'xxx',length:2}
 console.log(usualTools.toArray(arrayLike)) //['hhh','xxx']

repeat(target,n)

返回一个新字符串，该字符串包含被连接在一起的指定数量的字符串的副本。target为传入的字符串，n为重复的次数

console.log(usualTools.repeat("ab",2)) //"abab"