vue 公共方法
ZGuangJu 5/15/2020 公共方法
# 公共方法挂载方式
# 方式一 直接install
- 公共方法
common.js
// common.js
export default {
install(Vue) {
Vue.prototype.filterParams = function (obj) {
let paramsObj = {};
for (let i in obj) {
// 保留非空串（''）参数
if (obj[i] !== "" ) {
paramsObj[i] = obj[i];
}
}
// 过滤空参数并转为字符串
// return JSON.stringify(paramsObj);
// 过滤空参数返回obj对象
return paramsObj;
}
}
}
- 使用
// 不用引入，直接使用 this.filterParams()
let params = this.filterParams({
// 搜索后数据显示的首页条数
current: 0,
size: 10,
// 搜索的参数
keyword: this.screenForm.superviseName,
orderTypeValue: this.screenForm.businessType,
superviseStatus: this.screenForm.workOrderStatus,
});
# 方式二 通过main.js注册
- 公共方法
common.js
// common.js
export default {
test(){
return "test"
},
}
- 注册到
main.js
挂载(注册)在main.js
// main.js
import utils from './common/util/utils.js'
Vue.prototype.$utils = utils
- 使用
在任意页面中使用
let text = this.$utils.test()
# 方式三 各页面引入
// common.js
export function uniqueArr(arr) {
return Array.from(new Set(arr))
}
let uniqueArr = arr => {
return Array.from(new Set(arr))
}
export { uniqueArr }
- 页面引入 使用
// DemoPage.vue
<script>
import { uniqueArr } from '@/utils/utils'; // A.引用其中某几个方法
//const utils = require('@/utils/utils'); // B.全部引用
export default {
methods:{
// A
let relativePath = uniqueArr([1,11,1,2]);
// B
// let relativePath = utils.uniqueArr([1,11,1,2]);
}
}
</script>
# 过滤并去除空参数
// common.js
export default {
install(Vue) {
Vue.prototype.filterParams = function (obj) {
let paramsObj = {};
for (let i in obj) {
// 保留非空串（''）参数
if (obj[i] !== "" ) {
paramsObj[i] = obj[i];
}
}
// 过滤空参数并转为字符串
// return JSON.stringify(paramsObj);
// 过滤空参数返回obj对象
return paramsObj;
}
// 未知
Vue.prototype.getArrDifferent = function (a, b) {
const arr = [...a, ...b];
const newArr = arr.filter(item => {
return !(a.includes(item) && b.includes(item));
});
return newArr;
}
}
}
# 日期格式化(年月日时分秒)
/**
* Parse the time to string
* @param {(Object|string|number)} time
* @param {string} cFormat
* @returns {string}
*/
export function parseTime(time, cFormat) {
if (arguments.length === 0) {
return null
}
const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
let date
if (typeof time === 'undefined' || time === null || time === 'null') {
return ''
} else if (typeof time === 'object') {
date = time
} else {
if ((typeof time === 'string') && (/^[0-9]+$/.test(time))) {
time = parseInt(time)
}
if ((typeof time === 'number') && (time.toString().length === 10)) {
time = time * 1000
}
date = new Date(time)
}
const formatObj = {
y: date.getFullYear(),
m: date.getMonth() + 1,
d: date.getDate(),
h: date.getHours(),
i: date.getMinutes(),
s: date.getSeconds(),
a: date.getDay()
}
const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
let value = formatObj[key]
// Note : getDay() returns 0 on Sunday
if (key === 'a') {
return ['日', '一', '二', '三', '四', '五', '六'][value]
}
if (result.length > 0 && value < 10) {
value = '0' + value
}
return value || 0
})
return time_str
}
# 日期格式化(年月日时分秒毫秒)
/**
* Parse the time to string
* @param {(Object|string|number)} time
* @param {string} cFormat
* @returns {string}
*/
export function parseTimeMs(time, cFormat) {
if (arguments.length === 0) {
return null
}
const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}.{b}'
let date
if (typeof time === 'undefined' || time === null || time === 'null') {
return ''
} else if (typeof time === 'object') {
date = time
} else {
if ((typeof time === 'string') && (/^[0-9]+$/.test(time))) {
time = parseInt(time)
}
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(),
b: date.getMilliseconds(),
a: date.getDay()
}
const time_str = format.replace(/{(y|m|d|h|i|s|b|a)+}/g, (result, key) => {
let value = formatObj[key]
// Note : getDay() returns 0 on Sunday
if (key === 'a') {
return ['日', '一', '二', '三', '四', '五', '六'][value]
}
if (result.length > 0 && value < 10 && result !== '{b}') {
value = '0' + value
} else if (result === '{b}') {
if (value < 10) {
value = '00' + value
} else if (value > 9 && value < 100) {
value = '0' + value
}
}
return value || 0
})
return time_str
}
# 日期格式化(月日时分)
export function parseTimeYRSF(time, cFormat) {
if (arguments.length === 0) {
return null
}
const format = cFormat || '{m}-{d} {h}:{i}'
let date
if (typeof time === 'undefined' || time === null || time === 'null') {
return ''
} else if (typeof time === 'object') {
date = time
} else {
if ((typeof time === 'string') && (/^[0-9]+$/.test(time))) {
time = parseInt(time)
}
if ((typeof time === 'number') && (time.toString().length === 10)) {
time = time * 1000
}
date = new Date(time)
}
const formatObj = {
m: date.getMonth() + 1,
d: date.getDate(),
h: date.getHours(),
i: date.getMinutes()
}
const time_str = format.replace(/{(m|d|h|i)+}/g, (result, key) => {
let value = formatObj[key]
// Note : getDay() returns 0 on Sunday
if (key === 'a') {
return ['日', '一', '二', '三', '四', '五', '六'][value]
}
if (result.length > 0 && value < 10 && result !== '{b}') {
value = '0' + value
} else if (result === '{b}') {
if (value < 10) {
value = '00' + value
} else if (value > 9 && value < 100) {
value = '0' + value
}
}
return value || 0
})
return time_str
}
# 深拷贝
/**
* 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
}
# 数组删除重复项
/**
* @param {Array} arr
* @returns {Array}
*/
export function uniqueArr(arr) {
return Array.from(new Set(arr))
}
# 未分类
/**
* @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 = url.split('?')[1]
if (!search) {
return {}
}
return JSON.parse(
'{"' +
decodeURIComponent(search)
.replace(/"/g, '\\"')
.replace(/&/g, '","')
.replace(/=/g, '":"')
.replace(/\+/g, ' ') +
'"}'
)
}
/**
* @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
}
}
/**
* @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, ' ')
}
}
// 替换邮箱字符
export function regEmail(email) {
if (String(email).indexOf('@') > 0) {
const str = email.split('@')
let _s = ''
if (str[0].length > 3) {
for (var i = 0; i < str[0].length - 3; i++) {
_s += '*'
}
}
var new_email = str[0].substr(0, 3) + _s + '@' + str[1]
}
return new_email
}
// 替换手机字符
export function regMobile(mobile) {
if (mobile.length > 7) {
var new_mobile = mobile.substr(0, 3) + '****' + mobile.substr(7)
}
return new_mobile
}
// 下载文件
export function downloadFile(obj, name, suffix) {
const url = window.URL.createObjectURL(new Blob([obj]))
const link = document.createElement('a')
link.style.display = 'none'
link.href = url
const fileName = parseTime(new Date()) + '-' + name + '.' + suffix
link.setAttribute('download', fileName)
document.body.appendChild(link)
link.click()
document.body.removeChild(link)
}
import request from '@/utils/request'
// 下载文件
export function downloadFilePdf(obj, name) {
request({
url: obj,
method: 'get',
responseType: 'blob' // 约定是二进制流
}).then(res => {
const url = window.URL.createObjectURL(new Blob([res]))
const link = document.createElement('a')
link.style.display = 'none'
link.href = url
link.setAttribute('download', name)
document.body.appendChild(link)
link.click()
document.body.removeChild(link)
})
}
// 无日期的文件下载
// 下载文件
export function noDatedownloadFile(obj, name, suffix) {
const url = window.URL.createObjectURL(new Blob([obj]))
const link = document.createElement('a')
link.style.display = 'none'
link.href = url
const fileName = name + '.' + suffix
link.setAttribute('download', fileName)
document.body.appendChild(link)
link.click()
document.body.removeChild(link)
}
/**
* 工单进度判断
* @param {(Object|string|number)} cutoffTime 工单截止时间
* @param {(string|number)} warningTime 工单警告时间
0 超时
1 正常
2 预警
*/
// export function time(cutoffTime, warningTime, callback) {
// let timer
// timer = setInterval(function(callback) {
// if (new Date() < new Date(warningTime)) {
// console.log('正常')
// callback(1)
// } else if ((new Date(cutoffTime) > new Date()) && (new Date() > new Date(warningTime))) {
// console.log('预警')
// callback(2)
// } else if (new Date() > new Date(cutoffTime)) {
// console.log('超时')
// callback(0)
// clearInterval(timer)
// }
// }, 1000)
// }
export function caseProgress(cutoffTime, warningTime) {
// let timer, status
if (cutoffTime && warningTime) {
// time(cutoffTime, warningTime, function(a) {
// console.log(a)
// })
if (new Date() < new Date(warningTime)) {
return 1
} else if ((new Date(cutoffTime) > new Date()) && (new Date() > new Date(warningTime))) {
return 2
} else if (+new Date() === cutoffTime) {
return 2
} else if (new Date() > new Date(cutoffTime)) {
return 0
}
} else {
// status = 1
return 1
}
// return status
}