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utils-h

v1.1.4

Published

utils-package for front-end

Downloads

2

Readme

utils-h

utils-h 是一个前端工具包, 包括 qs , debounce ,throttle , LazyLoad , getTime , 等函数或类等 API

download

> yarn add utils-h

import

可以通过此,全部引入

import * as UtilsH from 'utils-h'

console.log(utilsH.throttle)

或者仅引入你需要使用的

import {debounce} from 'utils-h'

let f = debounce(100,cb,true)

use tools

🌀debounce

防抖函数

function debounce(wait: number, fun: Function, immediate?: boolean): Function

  • wait (ms)
  • fun
  • immediate

如果 immediate 是 true , 防抖函数会立即调用 ,默认 false

import { debounce } from 'utils-h'

let cb = function(){
  //...
}

let cbWithDebounce = debounce(200,cb,true)

ele.onclick = cbWithDebounce

🌈throttle

节流函数 function throttle(dur: number, fun: Function, endCall?: boolean): Function

  • dur(ms)
  • fun
  • endCall

如果 endCall 是 true , 讲在末尾再执行一次回调,假如 2s 执行一次,但是你 1 秒时停止了操作,但会执行2次 , 默认 true

import { throttle } from 'utils-h'

let cb = function(){
  //...
}

let cbWithThrottle = throttle(100,cb)

ele.onsroll = cbWithThrottle

🦀LazyLoad

图片懒加载类 未加载真正图片的 img 元素增加 data-lazy 属性 和 data-lazy-src 属性 data-lazy 为 true , data-lazy-src 为图片真正的 src 在 vue 和 react 中,请勿动态添加 data-lazy

constructor

  • constructor(root?:string) root 是 rootEle 的 id 或者 class , 默认值是 document 。rootEle 和 IntersectionObserver.root 是同一个意思

instance methods

  • observe() 在有新的 img 元素增加时,增加新的监听元素。 如果你使用 vue 或者 react , 请确保 img 元素已经渲染

disconnect

停止监听所有 img 元素

<script setup lang="ts">
import { LazyLoad } from 'utils-h4'
import { ref, onMounted } from 'vue'

const lazyload = ref<LazyLoad>(new LazyLoad('.container'))

onMounted(() => {
  lazyload.value.observe()
})

const imgList = ref<string[]>([])
imgList.value = [
  'src1',
  'src2',
  'src3'
]

</script>

<template>
  <div class="container">
    <img v-for="v in imgList" src="./loading.png" alt="" :key="v" data-lazy :data-lazy-src="v">
  </div>
</template>

<style>
.container {
  margin: 100px auto;
  width: 200px;
  height: 250px;
  overflow-x: hidden;
  overflow-y: scroll;
}

img {
  width: 200px;
  height: 200px;
}
</style>

🐻qs

提取 url 中的数据或者设置 search 参数

let {qs} from 'utils-h'

methods

  • parse(url:string) 获取 url 各个部分数据,返回对象
 let parseRes = qs.parse('https://abc.com:80/a/b/?a=1#efg')
 console.log(parseRes)
 /* 
  {
      url:'https://abc.com:80/?a=1#efg'
      scheme: https,
      domain: abc.com,
      port: 80,
      path: /a/b,
      query: a=1,
      hash: efg,
  }
 */
  • getQuery(url:string) 获取 search (query) 参数
let qo = qs.getQuery('http://abc.com?a=1&b=2')
console.log(qo)
/* 
  {
    a:1,
    b:2
  }
*/
  • setQuery(url:string,query:object) 设置 query (search) 参数
  let qo = {
    a:1,
    b:2
  }

  let url = qs.setQuery('http://abc.com',qo)
  console.log(url)
  // http://abc.com?a=1&b=2

🕐getTime

获取时间参数 根据你的格式,返回对应格式的时间

const time = getTime(format)

getTime('yyyy')  // 2023

getTime('mm')  // 03   (month
getTime('m')  // 3   (month

getTime('dd')  // 21   (day
getTime('d')  // 21   (day

getTime('hh:mimi:ss')  // 08:06:36
geTime('h:mi:s') // 8:6:36

getTime('yy/m/d hh:mimi:ss')  // 23/3/21 08:06:36

🐞Validator

校验器,用于表单数据的校验,

const validator = new Validator()

实例方法

  • noEmpty(text) 如果 text 是空字符串或者仅空格,则返回 false ,否则返回 true

  • equal(text1,text2) 严格比较 text1 和 text2

  • objEqual(obj1,ibj2,keys?) 根据 keys 指定比较的对象属性,比较对象是否相等 如果 keys 没有指定,则 keys = Object.keys(obj1)

不指定 keys

let obj1 = {
  a:1,
  b:2
},
obj2 = {
  a:1,
  b:2
}
validator.checkObjEqual(obj1,obj2) // true

指定 keys

let obj1 = {
  a:1,
  b:'2',
  c:{
    d:3
  },
  e:false
},
obj2 = {
  a:1,
  b:false,
  c:{
    d:3
  }
}
// 比较 a 和 c 下的 d 属性
validator.checkObjEqual(obj1,obj2,['a','c.d']) // true
  • len(text,minL,maxL) text 的长度是否在 [minL,maxL] 的范围内,如果在即 true ,否则 false

  • range(num,min,max,loose = false) 检测 num 数值的范围是否在 [min,max] 内 , 如果 loose 为 true ,则 num 可以为一个字符串数值,比如 '123'

validator.range('12',0,12) // false  '12' is string
validator.range('12',0,12,true) // true  '12' will translate to 12
  • isNum(num,loose = false,canbeNaN = false) 检测 num 是否是一个数值,loose 为 true1 ,表示字符串数值('12') 也认为是数值 canbeNaN 如果为 true ,则 NaN 也返回 true 其他情况非数值返回 false

  • phone(text) 根据传入的数值或字符串,检测是否为号码

  • mail(text) 根据传入的字符串,检测是否为邮箱

  • nameCh(text) 根据传入的字符串,检测是否为中文的名字,包括 XXX·XXX·XXX 的格式

  • pw(text,strength = 1) 检测密码的强度 strength = 1 时 , 限制长度不小于 6 strength = 2 时 , 限制长度不小于 8,且必须包含数值和英文 strength = 1 时 , 限制长度不小于 6 ,且必须包含数值,英文和特殊字符(部分特殊字符不支持)

  • addRule(rule:function) 传入一个自定义检测函数 , 返回一个 id

  • clear() 清空所有自定义函数

  • checkByRule(rule,...args:any) 传入 rule , 使用 rule 对应的方法对数据进行检测 rule 可以是自定义函数的 id ,也可以是 isNum ,mail 等字符串

let id = addRule((text)=>{
  return !!text
})
checkByRule(id,'abc') // true

checkByRule('phone','12312312312') // true
  • checkByRules(rules) 对于大量数据需要校验时,rules 只是一个配置,checkByRules 函数会根据配置,主动进行检测 返回一个 promise , 如果所有检测都是 true ,则 resolve 为 true 否则 resolve 为第一个 false 的检测的错误提示

rules 是对象数组,对象包括三个元素 rule , errText , args rule 可以是自定义检测函数的 id ,也可以是 isNum ,phone 等字符串 errText 是抛出的错误提示文字 args 是检测函数的参数数组

const rules = [
      {
        rule: "noEmpty",
        errText: "名字不能为空",
        args: [' asd  ']
      },
      {
        rule: "phone",
        errText: "号码不正确",
        args: ['123asd']
      },
      {
        rule: 'len',
        errText: "长度不符合",
        args: ['123', 2, 4]
      }
    ]

validator.checkByRules(rules).then((r) => {
      // all true
    }, err => {
      // first err
      // err === 号码不正确
    })