我要评论function getWeekTime(){
return [...new Array(7)].map((j,i)=> new Date(Date.now()+i*8.64e7).toLocaleDateString())
}
/**
* @param {any} target
* @param {string} type
* @return {boolean}
*/
function isType(target, type) {
let targetType = Object.prototype.toString.call(target).slice(8, -1).toLowerCase()
return targetType === type.toLowerCase()
}
isType([], 'Array') // true
isType(/\d/, 'RegExp') // true
isType(new Date(), 'Date') // true
isType(function(){}, 'Function') // true
isType(Symbol(1), 'Symbol') // true
/**
* @param {object} object
* @param {string[]} props
* @return {object}
*/
function omit(object, props=[]){
let res = {}
Object.keys(object).forEach(key=>{
if(props.includes(key) === false){
res[key] = typeof object[key] === 'object' && object[key] !== null ?
jsON.parse(jsON.stringify(object[key])):
object[key]
}
})
return res
}
/**
*
* @desc 数组去重
* @param {Array} arr
*/
function removeDupthird(arr) {
var newArr = [];
var obj = {};
for (var i = 0; i < arr.length; i++) {
obj[arr[i]] = arr[i];
}
var list = [];
for ( var i in obj) {
list.push(i);
}
return list;
};
let data = {
id: 1,
title: 'xxx',
comment: []
}
omit(data, ['id']) // {title: 'xxx', comment: []}
/**
* @param {string} format
* @param {number} timestamp - 时间戳
* @return {string}
*/
function formatDate(format='Y-M-D h:m', timestamp=Date.now()){
let date = new Date(timestamp)
let dateInfo = {
Y: date.getFullYear(),
M: date.getMonth()+1,
D: date.getDate(),
h: date.getHours(),
m: date.getMinutes(),
s: date.getSeconds()
}
let formatNumber = (n) => n > 10 ? n : '0' + n
let res = format
.replace('Y', dateInfo.Y)
.replace('M', dateInfo.M)
.replace('D', dateInfo.D)
.replace('h', formatNumber(dateInfo.h))
.replace('m', formatNumber(dateInfo.m))
.replace('s', formatNumber(dateInfo.s))
return res
}
formatDate() // "2020-2-24 13:44"
formatDate('M月D日 h:m') // "2月24日 13:45"
formatDate('h:m Y-M-D', 1582526221604) // "14:37 2020-2-24"
function debounce(func, wait = 300){
let timer = null;
return function(){
if(timer !== null){
clearTimeout(timer);
}
timer = setTimeout(fn,wait);
}
}
/**
* @param {function} func - 执行函数
* @param {number} wait - 等待时间
* @param {boolean} immediate - 是否立即执行
* @return {function}
*/
function debounce(func, wait = 300, immediate = false){
let timer, ctx;
let later = (arg) => setTimeout(()=>{
func.apply(ctx, arg)
timer = ctx = null
}, wait)
return function(...arg){
if(!timer){
timer = later(arg)
ctx = this
if(immediate){
func.apply(ctx, arg)
}
}else{
clearTimeout(timer)
timer = later(arg)
}
}
}
// 使用
let scrollHandler = debounce(function(e){
console.log(e)
}, 500)
window.onscroll = scrollHandler
/**
* @param {function} func - 执行函数
* @param {number} delay - 延迟时间
* @return {function}
*/
function throttle(func, delay){
let timer = null
return function(...arg){
if(!timer){
timer = setTimeout(()=>{
func.apply(this, arg)
timer = null
}, delay)
}
}
}
let scrollHandler = throttle(function(e){
console.log(e)
}, 500)
window.onscroll = scrollHandler
/**
* @param {string} filename - 下载时的文件名
* @param {string} data - base64字符串
*/
function downloadFile(filename, data){
let downloadLink = document.createElement('a');
if ( downloadLink ){
document.body.appendChild(downloadLink);
downloadLink.style = 'display: none';
downloadLink.download = filename;
downloadLink.href = data;
if ( document.createEvent ){
let downloadEvt = document.createEvent('MouseEvents');
downloadEvt.initEvent('click', true, false);
downloadLink.dispatchEvent(downloadEvt);
} else if ( document.createEventObject ) {
downloadLink.fireEvent('onclick');
} else if (typeof downloadLink.onclick == 'function' ) {
downloadLink.onclick();
}
document.body.removeChild(downloadLink);
}
}
function isPCBroswer() {
let e = window.navigator.userAgent.toLowerCase()
, t = "ipad" == e.match(/ipad/i)
, i = "iphone" == e.match(/iphone/i)
, r = "midp" == e.match(/midp/i)
, n = "rv:1.2.3.4" == e.match(/rv:1.2.3.4/i)
, a = "ucweb" == e.match(/ucweb/i)
, o = "android" == e.match(/android/i)
, s = "windows ce" == e.match(/windows ce/i)
, l = "windows mobile" == e.match(/windows mobile/i);
return !(t || i || r || n || a || o || s || l)
}
function getPlatformInfo(){
//运行环境是浏览器
let inBrowser = typeof window !== 'undefined';
//运行环境是微信
let inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
let weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
//浏览器 UA 判断
let UA = inBrowser && window.navigator.userAgent.toLowerCase();
if(UA){
let platforms = {
IE: /msie|trident/.test(UA),
IE9: UA.indexOf('msie 9.0') > 0,
Edge: UA.indexOf('edge/') > 0,
Android: UA.indexOf('android') > 0 || (weexPlatform === 'android'),
IOS: /iphone|ipad|ipod|ios/.test(UA) || (weexPlatform === 'ios'),
Chrome: /chrome\/\d+/.test(UA) && !(UA.indexOf('edge/') > 0),
}
for (const key in platforms) {
if (platforms.hasOwnProperty(key)) {
if(platforms[key]) return key
}
}
}
}
/**
* @desc 获取系统根路径
*/
function getRootPath() {
// 获取当前网址，如： http://localhost:8083/uimcardprj/share/meun.jsp
var curWwwPath = window.document.location.href;
// 获取主机地址之后的目录，如： uimcardprj/share/meun.jsp
var pathName = window.document.location.pathname;
var pos = curWwwPath.indexOf(pathName);
// 获取主机地址，如： http://localhost:8083
var localhostPaht = curWwwPath.substring(0, pos);
// 获取带"/"的项目名，如：/uimcardprj
var projectName = pathName.substring(0, pathName.substring(1).indexOf('/') + 1);
//return (localhostPaht + projectName + "/");
return (localhostPaht);
}
本文地址：https://blog.csdn.net/qq_28875189/article/details/107466581
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offset、client、scroll (width,height、left,top、X,Y)
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