/* 日期时间格式化
- @date 日期||时间
- @type dayjs的format类型
*/
export const format = (date, type = 'YYYY-MM-DD') => {
if (!date) return ''
const u = navigator.userAgent;
const isIOS = !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/);
if(isIOS && type == 'YYYY-MM-DD') {
type = 'yyyy-MM-dd'
}
if(isIOS && type == 'YYYY-MM-DD HH:mm:ss') {
type = 'yyyy-MM-ddTHH:mm:ss'
}
if (date == 'now') {
return dayjs(new Date()).format(type)
} else {
return dayjs(new Date(date)).format(type)
}
}
/**
-
Parse the time to string
-
@param {(Object|string|number)} time
-
@param {string} cFormat
-
@returns {string | null}
*/
export function parseTime(time, cFormat) {
if (arguments.length === 0 || !time) {
return null
}
const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
let date
if (typeof time === 'object') {
date = time
} else {
if ((typeof time === 'string')) {
if ((/[1]+$/.test(time))) {
// support "1548221490638"
time = parseInt(time)
} else {
// support safari
// https://stackoverflow.com/questions/4310953/invalid-date-in-safari
time = time.replace(new RegExp(/-/gm), '/')
}
}if ((typeof time === 'number') && (time.toString().length === 10)) {
time = time * 1000
}
date = new Date(time)
}
const formatObj = {
y: date.getFullYear(),
m: date.getMonth() + 1,
d: date.getDate(),
h: date.getHours(),
i: date.getMinutes(),
s: date.getSeconds(),
a: date.getDay()
}
const time_str = format.replace(/{([ymdhisa])+}/g, (result, key) => {
const value = formatObj[key]
// Note: getDay() returns 0 on Sunday
if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value ] }
return value.toString().padStart(2, '0')
})
return time_str
}
/**
- @param {number} time
- @param {string} option
- @returns {string}
*/
export function formatTime(time, option) {
if (('' + time).length === 10) {
time = parseInt(time) * 1000
} else {
time = +time
}
const d = new Date(time)
const now = Date.now()
const diff = (now - d) / 1000
if (diff < 30) {
return '刚刚'
} else if (diff < 3600) {
// less 1 hour
return Math.ceil(diff / 60) + '分钟前'
} else if (diff < 3600 * 24) {
return Math.ceil(diff / 3600) + '小时前'
} else if (diff < 3600 * 24 * 2) {
return '1天前'
}
if (option) {
return parseTime(time, option)
} else {
return (
d.getMonth() +
1 +
'月' +
d.getDate() +
'日' +
d.getHours() +
'时' +
d.getMinutes() +
'分'
)
}
}
/**
- @param {string} url
- @returns {Object}
/
export function getQueryObject(url) {
url = url == null ? window.location.href : url
const search = url.substring(url.lastIndexOf('?') + 1)
const obj = {}
const reg = /([?&=]+)=([?&=])/g
search.replace(reg, (rs, $1, $2) => {
const name = decodeURIComponent($1)
let val = decodeURIComponent($2)
val = String(val)
obj[name] = val
return rs
})
return obj
}
/**
- @param {string} input value
- @returns {number} output value
*/
export function byteLength(str) {
// returns the byte length of an utf8 string
let s = str.length
for (var i = str.length - 1; i >= 0; i--) {
const code = str.charCodeAt(i)
if (code > 0x7f && code <= 0x7ff) s++
else if (code > 0x7ff && code <= 0xffff) s += 2
if (code >= 0xDC00 && code <= 0xDFFF) i--
}
return s
}
/**
- @param {Array} actual
- @returns {Array}
*/
export function cleanArray(actual) {
const newArray = []
for (let i = 0; i < actual.length; i++) {
if (actual[i]) {
newArray.push(actual[i])
}
}
return newArray
}
/**
- @param {Object} json
- @returns {Array}
*/
export function param(json) {
if (!json) return ''
return cleanArray(
Object.keys(json).map(key => {
if (json[key] === undefined) return ''
return encodeURIComponent(key) + '=' + encodeURIComponent(json[key])
})
).join('&')
}
/**
- @param {string} url
- @returns {Object}
*/
export function param2Obj(url) {
const search = decodeURIComponent(url.split('?')[1]).replace(/+/g, ' ')
if (!search) {
return {}
}
const obj = {}
const searchArr = search.split('&')
searchArr.forEach(v => {
const index = v.indexOf('=')
if (index !== -1) {
const name = v.substring(0, index)
const val = v.substring(index + 1, v.length)
obj[name] = val
}
})
return obj
}
/**
- @param {string} val
- @returns {string}
*/
export function html2Text(val) {
const div = document.createElement('div')
div.innerHTML = val
return div.textContent || div.innerText
}
/**
- Merges two objects, giving the last one precedence
- @param {Object} target
- @param {(Object|Array)} source
- @returns {Object}
*/
export function objectMerge(target, source) {
if (typeof target !== 'object') {
target = {}
}
if (Array.isArray(source)) {
return source.slice()
}
Object.keys(source).forEach(property => {
const sourceProperty = source[property]
if (typeof sourceProperty === 'object') {
target[property] = objectMerge(target[property], sourceProperty)
} else {
target[property] = sourceProperty
}
})
return target
}
/**
- @param {HTMLElement} element
- @param {string} className
*/
export function toggleClass(element, className) {
if (!element || !className) {
return
}
let classString = element.className
const nameIndex = classString.indexOf(className)
if (nameIndex === -1) {
classString += '' + className
} else {
classString =
classString.substr(0, nameIndex) +
classString.substr(nameIndex + className.length)
}
element.className = classString
}
/**
- @param {string} type
- @returns {Date}
*/
export function getTime(type) {
if (type === 'start') {
return new Date().getTime() - 3600 * 1000 * 24 * 90
} else {
return new Date(new Date().toDateString())
}
}
/**
- @param {Function} func
- @param {number} wait
- @param {boolean} immediate
- @return {*}
*/
export function debounce(func, wait, immediate) {
let timeout, args, context, timestamp, result
const later = function() {
// 据上一次触发时间间隔
const last = +new Date() - timestamp
// 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait
if (last < wait && last > 0) {
timeout = setTimeout(later, wait - last)
} else {
timeout = null
// 如果设定为immediate===true,因为开始边界已经调用过了此处无需调用
if (!immediate) {
result = func.apply(context, args)
if (!timeout) context = args = null
}
}
}
return function(...args) {
context = this
timestamp = +new Date()
const callNow = immediate && !timeout
// 如果延时不存在,重新设定延时
if (!timeout) timeout = setTimeout(later, wait)
if (callNow) {
result = func.apply(context, args)
context = args = null
}
return result
}
}
/**
- This is just a simple version of deep copy
- Has a lot of edge cases bug
- If you want to use a perfect deep copy, use lodash's _.cloneDeep
- @param {Object} source
- @returns {Object}
*/
export function deepClone(source) {
if (!source && typeof source !== 'object') {
throw new Error('error arguments', 'deepClone')
}
const targetObj = source.constructor === Array ? [] : {}
Object.keys(source).forEach(keys => {
if (source[keys] && typeof source[keys] === 'object') {
targetObj[keys] = deepClone(source[keys])
} else {
targetObj[keys] = source[keys]
}
})
return targetObj
}
/**
- @param {Array} arr
- @returns {Array}
*/
export function uniqueArr(arr) {
return Array.from(new Set(arr))
}
/**
- @returns {string}
*/
export function createUniqueString() {
const timestamp = +new Date() + ''
const randomNum = parseInt((1 + Math.random()) * 65536) + ''
return (+(randomNum + timestamp)).toString(32)
}
/**
- Check if an element has a class
- @param {HTMLElement} elm
- @param {string} cls
- @returns {boolean}
*/
export function hasClass(ele, cls) {
return !!ele.className.match(new RegExp('(\s|^)' + cls + '(\s|$)'))
}
/**
- Add class to element
- @param {HTMLElement} elm
- @param {string} cls
*/
export function addClass(ele, cls) {
if (!hasClass(ele, cls)) ele.className += ' ' + cls
}
/**
- Remove class from element
- @param {HTMLElement} elm
- @param {string} cls
*/
export function removeClass(ele, cls) {
if (hasClass(ele, cls)) {
const reg = new RegExp('(\s|^)' + cls + '(\s|$)')
ele.className = ele.className.replace(reg, ' ')
}
}
// 加减乘除 & 金额处理====
/*
- 四舍五入精确位数
*/
export function calcRound(num, n) {
let f = parseFloat(num);
if (isNaN(f)) {
return false;
}
f = Math.round(num * Math.pow(10, n)) / Math.pow(10, n);
let s = f.toString();
let rs = s.indexOf('.');
if (rs < 0 && n > 0) {
rs = s.length;
s += '.';
}
while (s.length <= rs + n) {
s += '0';
}
return s;
}
/*加法函数,用来得到精确的加法结果
*说明:javascript的加法结果会有误差,在两个浮点数相加的时候会比较明显。这个函数返回较为精确的加法结果。
*调用:calcAdd(arg1,arg2)
*返回值:arg1加上arg2的精确结果
/
export function calcAdd(arg1, arg2) {
let r1,
r2,
m = 1;
try {
r1 = arg1.toString().split('.')[1].length;
} catch (e) {
r1 = 0;
}
try {
r2 = arg2.toString().split('.')[1].length;
} catch (e) {
r2 = 0;
}
m = Math.pow(10, Math.max(r1, r2));
return (arg1 * m + arg2 * m) / m;
}
/减法函数,用来得到精确的减法结果
*说明:javascript的减法结果会有误差,在两个浮点数相加的时候会比较明显。这个函数返回较为精确的减法结果。
*调用:calcSubtr(arg1,arg2)
*返回值:arg1减去arg2的精确结果
*/
export function calcSubtr(arg1, arg2) {
let r1,
r2,
m = 1,
n = 0;
try {
r1 = arg1.toString().split('.')[1].length;
} catch (e) {
r1 = 0;
}
try {
r2 = arg2.toString().split('.')[1].length;
} catch (e) {
r2 = 0;
}
m = Math.pow(10, Math.max(r1, r2));
//动态控制精度长度
n = r1 >= r2 ? r1 : r2;
return ((arg1 * m - arg2 * m) / m).toFixed(n);
}
/*乘法函数,用来得到精确的乘法结果
*说明:javascript的乘法结果会有误差,在两个浮点数相乘的时候会比较明显。这个函数返回较为精确的乘法结果。
*调用:calcMul(arg1,arg2)
*返回值:arg1乘以arg2的精确结果
*/
export function calcMul(arg1, arg2) {
let m = 0;
const s1 = arg1.toString(),
s2 = arg2.toString();
try {
m += s1.split('.')[1].length;
} catch (e) {}
try {
m += s2.split('.')[1].length;
} catch (e) {}
return (Number(s1.replace('.', '')) * Number(s2.replace('.', ''))) / Math.pow(10, m);
}
/*除法函数,用来得到精确的除法结果
- 说明:javascript的除法结果会有误差,在两个浮点数相除的时候会比较明显。这个函数返回较为精确的除法结果。
- 调用:calcDiv(arg1,arg2)
- 返回值:arg1除以arg2的精确结果
*/
function calcDiv(arg1, arg2) {
let t1 = 0,
t2 = 0;
let r1 = 0,
r2 = 1;
try {
t1 = arg1.toString().split('.')[1].length;
} catch (e) {}
try {
t2 = arg2.toString().split('.')[1].length;
} catch (e) {}
r1 = Number(arg1.toString().replace('.', ''));
r2 = Number(arg2.toString().replace('.', ''));
return (r1 / r2) * Math.pow(10, t2 - t1);
}
/*
- 元转分
*/
export function yuanToCents(num) {
if(!num) { return 0}
return calcMul(num, 100);
}
/*
- 分转元
- n 默认2带两位小数点
*/
export function centsToYuan(num, n=2) {
if(!num) { return 0}
return calcRound(calcDiv(num, 100), n);
}
export function getTimeFun(date) {
const timeGl = new Date(date);
let yyyy = timeGl.getFullYear();
// getMonth方法返回的是0-11之间的数字,代表1-12月份,若想和日历的月份时间对应,需要+1。
let month = (timeGl.getMonth() + 1);
if (month < 10) {
month = "0" + month
}
let day = (timeGl.getDate() < 10) ? ("0" + timeGl.getDate()) : (timeGl.getDate());
let hours = (timeGl.getHours() < 10) ? ("0" + timeGl.getHours()) : (timeGl.getHours());
let minutes = (timeGl.getMinutes() < 10) ? ("0" + timeGl.getMinutes()) : (timeGl.getMinutes());
let seconds = (timeGl.getSeconds() < 10) ? ("0" + timeGl.getSeconds()) : (timeGl.getSeconds());
let yyyyMMddHHmmss = yyyy + '-' + month + '-' + day + ' ' + hours + ':' + minutes + ':' + seconds;
return yyyyMMddHHmmss;
}
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