分类目录归档:Web Frontend

浏览器跨域,就是这么简单!

首先,你得理解为什么浏览器要限制跨域:

  1. 比如我公司的静态 js 和图片,被某大流量网站直接引用了,我流量不直接被刷爆?
  2. 某域名直接 iframe 之类嵌套,或者引用我的资料,打着李逵的名号,其实是李鬼。

所以,浏览器限制了跨域请求。

问:那么,我们开发时,想要访问线上接口怎么办?

答:我们可以用 vite 之类 nodejs 的代理功能,通过代理访问线上接口,代理一词的意思是我们访问本地的接口,代理服务器通过本地程序(非浏览器)转发到线上接口。

问:如果我们确实有线上项目的跨域请求的需求怎么办?

答:我们可以在服务器设置 Access-Control-Allow-Origin ,将我们自己人加入白名单。

antd+vue3 开源admin后台

Vue Vben Admin (推荐)

https://github.com/vbenjs/vue-vben-admin

Vue Vben Admin 是一个免费开源的中后台模版。使用了最新的vue3,vite2,TypeScript等主流技术开发,开箱即用的中后台前端解决方案,也可用于学习参考。

特性

  • 最新技术栈:使用 Vue3/vite2 等前端前沿技术开发
  • TypeScript: 应用程序级 JavaScript 的语言
  • 主题:可配置的主题
  • 国际化:内置完善的国际化方案
  • Mock 数据 内置 Mock 数据方案
  • 权限 内置完善的动态路由权限生成方案
  • 组件 二次封装了多个常用的组件

Naive Ui Admin

https://github.com/jekip/naive-ui-admin

Naive Ui Admin 完全免费,且可商用,基于 Vue3.0、Vite、 Naive UI、TypeScript 的中后台解决方案,它使用了最新的前端技术栈,并提炼了典型的业务模型,页面,包括二次封装组件、动态菜单、权限校验、粒子化权限控制等功能,它可以帮助你快速搭建企业级中后台项目, 相信不管是从新技术使用还是其他方面,都能帮助到你。

特性

  • 二次封装实用高扩展性组件
  • 响应式、多主题,多配置,快速集成,开箱即用
  • 最新技术栈,使用 Vue3、Typescript、Pinia、Vite 等前端前沿技术
  • 强大的鉴权系统,对路由、菜单、功能点等支持三种鉴权模式,满足不同的业务鉴权需求
  • 持续更新,实用性页面模板功能和交互,随意搭配组合,让构建页面变得简单化

vue-antd-admin

https://github.com/biubiubiu01/vue-antd-admin

vue-antd-admin基于vue-cli4+vuex+ant-design-vue开发的后台管理系统,包括权限管理,布局方式,国际化,动态路由和后台管理系统常用的table表和表单等功能,包含echarts图的各种展示,第一版已完成,有兴趣可以了解下。

之后可能不咋会更新了,准备写一个vue3+ts+vite了.

vue3-antd-admin

https://github.com/llyyayx/vue3-antd-admin

使用vue3+ant-design-vue+vite+ts开发的通用后台框架,实现了权限系统、动态菜单、表格集成快速使用等功能,简洁干净开箱即用。

vue-admin-better

https://github.com/chuzhixin/vue-admin-better

提供收费版本

  • 40+高质量单页
  • RBAC 模型 + JWT 权限控制
  • 10 万+ 项目实际应用
  • 良好的类型定义
  • 开源版本支持免费商用
  • 跨平台 PC、手机端、平板
  • 后端路由动态渲染

小程序使用最新版OpenCV教程

本文一步一步教你如何在小程序中使用最新版的OpenCV

安装基础软件

安装基础工具

pacman -S base-devel cmake git

安装以及配置emsdk

git clone https://github.com/juj/emsdk.git
cd emsdk
./emsdk install 2.0.10
./emsdk activate 2.0.10
source ./emsdk_env.sh

配置以及编译OpenCV

进入 https://opencv.org/releases/ 页面下载opencv最新版源码,并解压缩,并进入解压缩后文件夹

取消不需要的OpenCV模块,减少wasm体积

修改platforms/js/opencv_js.config.py文件根据情况,去掉不用的模块

# white_list = makeWhiteList([core, imgproc, objdetect, video, dnn, features2d, photo, aruco, calib3d])
white_list = makeWhiteList([core, imgproc])

配置OpenCV4输出独立的wasm文件

默认OpenCV4会将wasm以base64存到js文件,输出单独wasm文件便于用于微信小程序

打开modules/js/CMakeLists.txt,去掉 SINGLE_FILE参数

# set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s MODULARIZE=1 -s SINGLE_FILE=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s MODULARIZE=1")

配置OpenCV禁用动态执行函数

微信小程序不支持eval()new Function()等动态执行函数,在modules/js/CMakeLists.txt中,增加DYNAMIC_EXECUTION的编译参数屏蔽这些函数的输出

# set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s MODULARIZE=1 -s SINGLE_FILE=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s MODULARIZE=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s DYNAMIC_EXECUTION=0")

查看编译参数

emcmake python ./platforms/js/build_js.py -h

编译OpenCV

emcmake python ./platforms/js/build_js.py build_wasm --build_wasm --build_test

build_wasm\bin目录生成了opencv.js,opencv_js.wasm,tests.html文件

压缩wasm

brotli -o build_wasm/bin/opencv_js.wasm.br build_wasm/bin/opencv_js.wasm

运行以及查看Web测试

npm i -g http-server
http-server build_wasm/bin/

在浏览器打开 http://127.0.0.1:8080/tests.html 可以查看测试结果

修改opencv.js适配微信小程序

修改前先将opencv.js格式化一下,微信小程序不支持通过url获取wasm,修改下instantiateAsync方法的else分支里面的代码,让读小程序项目下的opencv_js.wasm文件


        function instantiateAsync() {
          if (
            !wasmBinary &&
            typeof WebAssembly.instantiateStreaming === "function" &&
            !isDataURI(wasmBinaryFile) &&
            !isFileURI(wasmBinaryFile) &&
            typeof fetch === "function"
          ) {
            return fetch(wasmBinaryFile, { credentials: "same-origin" }).then(
              function (response) {
                var result = WebAssembly.instantiateStreaming(response, info);
                return result.then(
                  receiveInstantiatedSource,
                  function (reason) {
                    err("wasm streaming compile failed: " + reason);
                    err("falling back to ArrayBuffer instantiation");
                    return instantiateArrayBuffer(receiveInstantiatedSource);
                  }
                );
              }
            );
          } else {
            // return instantiateArrayBuffer(receiveInstantiatedSource);
            var result = WebAssembly.instantiate("/opencv/opencv_js.wasm.br", info);
            return result.then(
              receiveInstantiatedSource,
              function (reason) {
                err("wasm streaming compile failed: " + reason);
                err("falling back to ArrayBuffer instantiation");
                return instantiateArrayBuffer(receiveInstantiatedSource);
              }
            );
          }
        }

修改OpenCV.js的imread,imshow,VideoCapture方法支持小程序

这些方法定义在modules\js\src\helpers.js文件中,修改后重新编译和生成wasm文件即可

在小程序使用OpenCV.js

const app = getApp()
WebAssembly = WXWebAssembly;
let cv = require('../../opencv/opencv.js');

Page({
  onLoad: function (options) {
    if (cv instanceof Promise) {
      cv.then((target) => {
        console.log(target);
      })
    } else {
      console.log(cv);
    }
  }
})

参考

微信小程序抽奖平台源码(4套)

一,https://github.com/tuoxie15/LuckDrawProgram

    页面

├── home                   首页 奖品列表页
├── luckDraw               奖品详情页 抽奖页
├── personalCenter         个人中心 我参加的抽奖、中奖纪录、收货地址
├── past                   我参与过的抽奖页 待开奖、已结束
├── prize                  中/未中奖展示页、分享页、通过通知点进去展示页
├── record                 中过奖的记录页
├── portraitList           头像列表
├── FLBRecord              福利分领取记录
├── exchangeDetails        兑换商品详情
├── exchangeRecord         兑换商品记录
├── rankingList            排行榜
├── strategy               赚币攻略
|—— getMoreFLC             福利分页面 获得更多福利分
|—— historyDraw            历史抽奖
|—— sponsor                成为赞助商
|—— feedBack               意见反馈

二,https://github.com/ezshine/mp_luckydraw

一套微信小程序抽奖平台(包含全部前后端源码)

功能介绍

1、口令抽奖: 大家都知道小程序的限制颇多,不能引导回公众号,即使关联跳转小程序,也有数量限制。口令抽奖一来可以限制参与抽奖的人,二来可以通过口令提示引导回公众号下发口令,带动关注。

2、限定地点: 我希望这个小程序未来也可以帮助线下的商户发起抽奖活动,那么做一个参与的位置电子围栏是很有必要的。

3、限定性别: 不多解释

4、条码解锁: 这个的思路也很好玩,让抽奖活动需要触发扫描特定的条形码方可参与。那么自然特别适合快速消费品品牌来玩。

5、RP币

三,https://github.com/ifanrx/hydrogen-lottery-miniprogram

知晓云抽奖小程序

四,https://github.com/wang-binbin/smallAppsLottery

javascript按生日排序(含农历,自动计算下一个生日)

用法

// @公历转农历
// 返回包含阳历和农历生日的json对象
calendar.solar2lunar(year,month,day); 

// @农历转公历
// 返回包含阳历和农历生日的json对象
calendar.lunar2solar(year,month,day,isLeap); 

// @计算生日
// 返回用户下一个生日的阳历日期以及距离今天的天数
calendar.birthday(year,month,day,nongli,isLeap); 

calendar类

/**
 * @1900-2100区间内的公历、农历互转
 * @charset UTF-8
 * @Author  Jea杨(JJonline@JJonline.Cn) 
 * @Time    2014-7-21
 * @Time    2016-8-13 Fixed 2033hex、Attribution Annals
 * @Time    2016-9-25 Fixed lunar LeapMonth Param Bug
 * @Time    2017-7-24 Fixed use getTerm Func Param Error.use solar year,NOT lunar year
 * @Version 1.0.3
 * @公历转农历:calendar.solar2lunar(year,month,day); 
 * @农历转公历:calendar.lunar2solar(year,month,day,isLeap); 
 * @计算生日:calendar.birthday(year,month,day,nongli,isLeap); 
 * @src:    http://www.jjonline.cn/Public/Js/calendar.js
 * 公历年月日转农历数据:calendar.solar2lunar(1987,11,01);
 * 农历年月日转公历年月日:calendar.lunar2solar(1987,9,10);
 */
var calendar = {

  /**
   * 农历1900-2100的润大小信息表
   * @Array Of Property
   * @return Hex 
   */
  lunarInfo: [0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2, //1900-1909
    0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977, //1910-1919
    0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970, //1920-1929
    0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950, //1930-1939
    0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557, //1940-1949
    0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5b0, 0x14573, 0x052b0, 0x0a9a8, 0x0e950, 0x06aa0, //1950-1959
    0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0, //1960-1969
    0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b6a0, 0x195a6, //1970-1979
    0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570, //1980-1989
    0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0, //1990-1999
    0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5, //2000-2009
    0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930, //2010-2019
    0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530, //2020-2029
    0x05aa0, 0x076a3, 0x096d0, 0x04afb, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45, //2030-2039
    0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0, //2040-2049
    /**Add By JJonline@JJonline.Cn**/
    0x14b63, 0x09370, 0x049f8, 0x04970, 0x064b0, 0x168a6, 0x0ea50, 0x06b20, 0x1a6c4, 0x0aae0, //2050-2059
    0x0a2e0, 0x0d2e3, 0x0c960, 0x0d557, 0x0d4a0, 0x0da50, 0x05d55, 0x056a0, 0x0a6d0, 0x055d4, //2060-2069
    0x052d0, 0x0a9b8, 0x0a950, 0x0b4a0, 0x0b6a6, 0x0ad50, 0x055a0, 0x0aba4, 0x0a5b0, 0x052b0, //2070-2079
    0x0b273, 0x06930, 0x07337, 0x06aa0, 0x0ad50, 0x14b55, 0x04b60, 0x0a570, 0x054e4, 0x0d160, //2080-2089
    0x0e968, 0x0d520, 0x0daa0, 0x16aa6, 0x056d0, 0x04ae0, 0x0a9d4, 0x0a2d0, 0x0d150, 0x0f252, //2090-2099
    0x0d520
  ], //2100

  /**
   * 公历每个月份的天数普通表
   * @Array Of Property
   * @return Number 
   */
  solarMonth: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],

  /**
   * 天干地支之天干速查表
   * @Array Of Property trans["甲","乙","丙","丁","戊","己","庚","辛","壬","癸"]
   * @return Cn string 
   */
  Gan: ["\u7532", "\u4e59", "\u4e19", "\u4e01", "\u620a", "\u5df1", "\u5e9a", "\u8f9b", "\u58ec", "\u7678"],

  /**
   * 天干地支之地支速查表
   * @Array Of Property 
   * @trans["子","丑","寅","卯","辰","巳","午","未","申","酉","戌","亥"]
   * @return Cn string 
   */
  Zhi: ["\u5b50", "\u4e11", "\u5bc5", "\u536f", "\u8fb0", "\u5df3", "\u5348", "\u672a", "\u7533", "\u9149", "\u620c", "\u4ea5"],

  /**
   * 天干地支之地支速查表<=>生肖
   * @Array Of Property 
   * @trans["鼠","牛","虎","兔","龙","蛇","马","羊","猴","鸡","狗","猪"]
   * @return Cn string 
   */
  Animals: ["\u9f20", "\u725b", "\u864e", "\u5154", "\u9f99", "\u86c7", "\u9a6c", "\u7f8a", "\u7334", "\u9e21", "\u72d7", "\u732a"],

  /**
   * 24节气速查表
   * @Array Of Property 
   * @trans["小寒","大寒","立春","雨水","惊蛰","春分","清明","谷雨","立夏","小满","芒种","夏至","小暑","大暑","立秋","处暑","白露","秋分","寒露","霜降","立冬","小雪","大雪","冬至"]
   * @return Cn string 
   */
  solarTerm: ["\u5c0f\u5bd2", "\u5927\u5bd2", "\u7acb\u6625", "\u96e8\u6c34", "\u60ca\u86f0", "\u6625\u5206", "\u6e05\u660e", "\u8c37\u96e8", "\u7acb\u590f", "\u5c0f\u6ee1", "\u8292\u79cd", "\u590f\u81f3", "\u5c0f\u6691", "\u5927\u6691", "\u7acb\u79cb", "\u5904\u6691", "\u767d\u9732", "\u79cb\u5206", "\u5bd2\u9732", "\u971c\u964d", "\u7acb\u51ac", "\u5c0f\u96ea", "\u5927\u96ea", "\u51ac\u81f3"],

  /**
   * 1900-2100各年的24节气日期速查表
   * @Array Of Property 
   * @return 0x string For splice
   */
  sTermInfo: ['9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e', '97bcf97c3598082c95f8c965cc920f',
    '97bd0b06bdb0722c965ce1cfcc920f', 'b027097bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e',
    '97bcf97c359801ec95f8c965cc920f', '97bd0b06bdb0722c965ce1cfcc920f', 'b027097bd097c36b0b6fc9274c91aa',
    '97b6b97bd19801ec9210c965cc920e', '97bcf97c359801ec95f8c965cc920f', '97bd0b06bdb0722c965ce1cfcc920f',
    'b027097bd097c36b0b6fc9274c91aa', '9778397bd19801ec9210c965cc920e', '97b6b97bd19801ec95f8c965cc920f',
    '97bd09801d98082c95f8e1cfcc920f', '97bd097bd097c36b0b6fc9210c8dc2', '9778397bd197c36c9210c9274c91aa',
    '97b6b97bd19801ec95f8c965cc920e', '97bd09801d98082c95f8e1cfcc920f', '97bd097bd097c36b0b6fc9210c8dc2',
    '9778397bd097c36c9210c9274c91aa', '97b6b97bd19801ec95f8c965cc920e', '97bcf97c3598082c95f8e1cfcc920f',
    '97bd097bd097c36b0b6fc9210c8dc2', '9778397bd097c36c9210c9274c91aa', '97b6b97bd19801ec9210c965cc920e',
    '97bcf97c3598082c95f8c965cc920f', '97bd097bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
    '97b6b97bd19801ec9210c965cc920e', '97bcf97c3598082c95f8c965cc920f', '97bd097bd097c35b0b6fc920fb0722',
    '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e', '97bcf97c359801ec95f8c965cc920f',
    '97bd097bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e',
    '97bcf97c359801ec95f8c965cc920f', '97bd097bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
    '97b6b97bd19801ec9210c965cc920e', '97bcf97c359801ec95f8c965cc920f', '97bd097bd07f595b0b6fc920fb0722',
    '9778397bd097c36b0b6fc9210c8dc2', '9778397bd19801ec9210c9274c920e', '97b6b97bd19801ec95f8c965cc920f',
    '97bd07f5307f595b0b0bc920fb0722', '7f0e397bd097c36b0b6fc9210c8dc2', '9778397bd097c36c9210c9274c920e',
    '97b6b97bd19801ec95f8c965cc920f', '97bd07f5307f595b0b0bc920fb0722', '7f0e397bd097c36b0b6fc9210c8dc2',
    '9778397bd097c36c9210c9274c91aa', '97b6b97bd19801ec9210c965cc920e', '97bd07f1487f595b0b0bc920fb0722',
    '7f0e397bd097c36b0b6fc9210c8dc2', '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e',
    '97bcf7f1487f595b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
    '97b6b97bd19801ec9210c965cc920e', '97bcf7f1487f595b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722',
    '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e', '97bcf7f1487f531b0b0bb0b6fb0722',
    '7f0e397bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e',
    '97bcf7f1487f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
    '97b6b97bd19801ec9210c9274c920e', '97bcf7f0e47f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722',
    '9778397bd097c36b0b6fc9210c91aa', '97b6b97bd197c36c9210c9274c920e', '97bcf7f0e47f531b0b0bb0b6fb0722',
    '7f0e397bd07f595b0b0bc920fb0722', '9778397bd097c36b0b6fc9210c8dc2', '9778397bd097c36c9210c9274c920e',
    '97b6b7f0e47f531b0723b0b6fb0722', '7f0e37f5307f595b0b0bc920fb0722', '7f0e397bd097c36b0b6fc9210c8dc2',
    '9778397bd097c36b0b70c9274c91aa', '97b6b7f0e47f531b0723b0b6fb0721', '7f0e37f1487f595b0b0bb0b6fb0722',
    '7f0e397bd097c35b0b6fc9210c8dc2', '9778397bd097c36b0b6fc9274c91aa', '97b6b7f0e47f531b0723b0b6fb0721',
    '7f0e27f1487f595b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
    '97b6b7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722',
    '9778397bd097c36b0b6fc9274c91aa', '97b6b7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722',
    '7f0e397bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa', '97b6b7f0e47f531b0723b0b6fb0721',
    '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
    '97b6b7f0e47f531b0723b0787b0721', '7f0e27f0e47f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722',
    '9778397bd097c36b0b6fc9210c91aa', '97b6b7f0e47f149b0723b0787b0721', '7f0e27f0e47f531b0723b0b6fb0722',
    '7f0e397bd07f595b0b0bc920fb0722', '9778397bd097c36b0b6fc9210c8dc2', '977837f0e37f149b0723b0787b0721',
    '7f07e7f0e47f531b0723b0b6fb0722', '7f0e37f5307f595b0b0bc920fb0722', '7f0e397bd097c35b0b6fc9210c8dc2',
    '977837f0e37f14998082b0787b0721', '7f07e7f0e47f531b0723b0b6fb0721', '7f0e37f1487f595b0b0bb0b6fb0722',
    '7f0e397bd097c35b0b6fc9210c8dc2', '977837f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721',
    '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722', '977837f0e37f14998082b0787b06bd',
    '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722',
    '977837f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722',
    '7f0e397bd07f595b0b0bc920fb0722', '977837f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721',
    '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722', '977837f0e37f14998082b0787b06bd',
    '7f07e7f0e47f149b0723b0787b0721', '7f0e27f0e47f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722',
    '977837f0e37f14998082b0723b06bd', '7f07e7f0e37f149b0723b0787b0721', '7f0e27f0e47f531b0723b0b6fb0722',
    '7f0e397bd07f595b0b0bc920fb0722', '977837f0e37f14898082b0723b02d5', '7ec967f0e37f14998082b0787b0721',
    '7f07e7f0e47f531b0723b0b6fb0722', '7f0e37f1487f595b0b0bb0b6fb0722', '7f0e37f0e37f14898082b0723b02d5',
    '7ec967f0e37f14998082b0787b0721', '7f07e7f0e47f531b0723b0b6fb0722', '7f0e37f1487f531b0b0bb0b6fb0722',
    '7f0e37f0e37f14898082b0723b02d5', '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721',
    '7f0e37f1487f531b0b0bb0b6fb0722', '7f0e37f0e37f14898082b072297c35', '7ec967f0e37f14998082b0787b06bd',
    '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e37f0e37f14898082b072297c35',
    '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722',
    '7f0e37f0e366aa89801eb072297c35', '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f149b0723b0787b0721',
    '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e37f0e366aa89801eb072297c35', '7ec967f0e37f14998082b0723b06bd',
    '7f07e7f0e47f149b0723b0787b0721', '7f0e27f0e47f531b0723b0b6fb0722', '7f0e37f0e366aa89801eb072297c35',
    '7ec967f0e37f14998082b0723b06bd', '7f07e7f0e37f14998083b0787b0721', '7f0e27f0e47f531b0723b0b6fb0722',
    '7f0e37f0e366aa89801eb072297c35', '7ec967f0e37f14898082b0723b02d5', '7f07e7f0e37f14998082b0787b0721',
    '7f07e7f0e47f531b0723b0b6fb0722', '7f0e36665b66aa89801e9808297c35', '665f67f0e37f14898082b0723b02d5',
    '7ec967f0e37f14998082b0787b0721', '7f07e7f0e47f531b0723b0b6fb0722', '7f0e36665b66a449801e9808297c35',
    '665f67f0e37f14898082b0723b02d5', '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721',
    '7f0e36665b66a449801e9808297c35', '665f67f0e37f14898082b072297c35', '7ec967f0e37f14998082b0787b06bd',
    '7f07e7f0e47f531b0723b0b6fb0721', '7f0e26665b66a449801e9808297c35', '665f67f0e37f1489801eb072297c35',
    '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722'
  ],

  /**
   * 数字转中文速查表
   * @Array Of Property 
   * @trans ['日','一','二','三','四','五','六','七','八','九','十']
   * @return Cn string 
   */
  nStr1: ["\u65e5", "\u4e00", "\u4e8c", "\u4e09", "\u56db", "\u4e94", "\u516d", "\u4e03", "\u516b", "\u4e5d", "\u5341"],

  /**
   * 日期转农历称呼速查表
   * @Array Of Property 
   * @trans ['初','十','廿','卅']
   * @return Cn string 
   */
  nStr2: ["\u521d", "\u5341", "\u5eff", "\u5345"],

  /**
   * 月份转农历称呼速查表
   * @Array Of Property 
   * @trans ['正','一','二','三','四','五','六','七','八','九','十','冬','腊']
   * @return Cn string 
   */
  nStr3: ["\u6b63", "\u4e8c", "\u4e09", "\u56db", "\u4e94", "\u516d", "\u4e03", "\u516b", "\u4e5d", "\u5341", "\u51ac", "\u814a"],

  /**
   * 返回农历y年一整年的总天数
   * @param lunar Year
   * @return Number
   * @eg:var count = calendar.lYearDays(1987) ;//count=387
   */
  lYearDays: function (y) {
    var i, sum = 348;
    for (i = 0x8000; i > 0x8; i >>= 1) {
      sum += (calendar.lunarInfo[y - 1900] & i) ? 1 : 0;
    }
    return (sum + calendar.leapDays(y));
  },

  /**
   * 返回农历y年闰月是哪个月;若y年没有闰月 则返回0
   * @param lunar Year
   * @return Number (0-12)
   * @eg:var leapMonth = calendar.leapMonth(1987) ;//leapMonth=6
   */
  leapMonth: function (y) { //闰字编码 \u95f0
    return (calendar.lunarInfo[y - 1900] & 0xf);
  },

  /**
   * 返回农历y年闰月的天数 若该年没有闰月则返回0
   * @param lunar Year
   * @return Number (0、29、30)
   * @eg:var leapMonthDay = calendar.leapDays(1987) ;//leapMonthDay=29
   */
  leapDays: function (y) {
    if (calendar.leapMonth(y)) {
      return ((calendar.lunarInfo[y - 1900] & 0x10000) ? 30 : 29);
    }
    return (0);
  },

  /**
   * 返回农历y年m月(非闰月)的总天数,计算m为闰月时的天数请使用leapDays方法
   * @param lunar Year
   * @return Number (-1、29、30)
   * @eg:var MonthDay = calendar.monthDays(1987,9) ;//MonthDay=29
   */
  monthDays: function (y, m) {
    if (m > 12 || m < 1) {
      return -1
    } //月份参数从1至12,参数错误返回-1
    return ((calendar.lunarInfo[y - 1900] & (0x10000 >> m)) ? 30 : 29);
  },

  /**
   * 返回公历(!)y年m月的天数
   * @param solar Year
   * @return Number (-1、28、29、30、31)
   * @eg:var solarMonthDay = calendar.leapDays(1987) ;//solarMonthDay=30
   */
  solarDays: function (y, m) {
    if (m > 12 || m < 1) {
      return -1
    } //若参数错误 返回-1
    var ms = m - 1;
    if (ms == 1) { //2月份的闰平规律测算后确认返回28或29
      return (((y % 4 == 0) && (y % 100 != 0) || (y % 400 == 0)) ? 29 : 28);
    } else {
      return (calendar.solarMonth[ms]);
    }
  },

  /**
   * 农历年份转换为干支纪年
   * @param  lYear 农历年的年份数
   * @return Cn string
   */
  toGanZhiYear: function (lYear) {
    var ganKey = (lYear - 3) % 10;
    var zhiKey = (lYear - 3) % 12;
    if (ganKey == 0) ganKey = 10; //如果余数为0则为最后一个天干
    if (zhiKey == 0) zhiKey = 12; //如果余数为0则为最后一个地支
    return calendar.Gan[ganKey - 1] + calendar.Zhi[zhiKey - 1];

  },

  /**
   * 公历月、日判断所属星座
   * @param  cMonth [description]
   * @param  cDay [description]
   * @return Cn string
   */
  toAstro: function (cMonth, cDay) {
    var s = "\u9b54\u7faf\u6c34\u74f6\u53cc\u9c7c\u767d\u7f8a\u91d1\u725b\u53cc\u5b50\u5de8\u87f9\u72ee\u5b50\u5904\u5973\u5929\u79e4\u5929\u874e\u5c04\u624b\u9b54\u7faf";
    var arr = [20, 19, 21, 21, 21, 22, 23, 23, 23, 23, 22, 22];
    return s.substr(cMonth * 2 - (cDay < arr[cMonth - 1] ? 2 : 0), 2) + "\u5ea7"; //座
  },

  /**
   * 传入offset偏移量返回干支
   * @param offset 相对甲子的偏移量
   * @return Cn string
   */
  toGanZhi: function (offset) {
    return calendar.Gan[offset % 10] + calendar.Zhi[offset % 12];
  },

  /**
   * 传入公历(!)y年获得该年第n个节气的公历日期
   * @param y公历年(1900-2100);n二十四节气中的第几个节气(1~24);从n=1(小寒)算起 
   * @return day Number
   * @eg:var _24 = calendar.getTerm(1987,3) ;//_24=4;意即1987年2月4日立春
   */
  getTerm: function (y, n) {
    if (y < 1900 || y > 2100) {
      return -1;
    }
    if (n < 1 || n > 24) {
      return -1;
    }
    var _table = calendar.sTermInfo[y - 1900];
    var _info = [
      parseInt('0x' + _table.substr(0, 5)).toString(),
      parseInt('0x' + _table.substr(5, 5)).toString(),
      parseInt('0x' + _table.substr(10, 5)).toString(),
      parseInt('0x' + _table.substr(15, 5)).toString(),
      parseInt('0x' + _table.substr(20, 5)).toString(),
      parseInt('0x' + _table.substr(25, 5)).toString()
    ];
    var _calday = [
      _info[0].substr(0, 1),
      _info[0].substr(1, 2),
      _info[0].substr(3, 1),
      _info[0].substr(4, 2),

      _info[1].substr(0, 1),
      _info[1].substr(1, 2),
      _info[1].substr(3, 1),
      _info[1].substr(4, 2),

      _info[2].substr(0, 1),
      _info[2].substr(1, 2),
      _info[2].substr(3, 1),
      _info[2].substr(4, 2),

      _info[3].substr(0, 1),
      _info[3].substr(1, 2),
      _info[3].substr(3, 1),
      _info[3].substr(4, 2),

      _info[4].substr(0, 1),
      _info[4].substr(1, 2),
      _info[4].substr(3, 1),
      _info[4].substr(4, 2),

      _info[5].substr(0, 1),
      _info[5].substr(1, 2),
      _info[5].substr(3, 1),
      _info[5].substr(4, 2),
    ];
    return parseInt(_calday[n - 1]);
  },

  /**
   * 传入农历数字月份返回汉语通俗表示法
   * @param lunar month
   * @return Cn string
   * @eg:var cnMonth = calendar.toChinaMonth(12) ;//cnMonth='腊月'
   */
  toChinaMonth: function (m) { // 月 => \u6708
    if (m > 12 || m < 1) {
      return -1
    } //若参数错误 返回-1
    var s = calendar.nStr3[m - 1];
    s += "\u6708"; //加上月字
    return s;
  },

  /**
   * 传入农历日期数字返回汉字表示法
   * @param lunar day
   * @return Cn string
   * @eg:var cnDay = calendar.toChinaDay(21) ;//cnMonth='廿一'
   */
  toChinaDay: function (d) { //日 => \u65e5
    var s;
    switch (d) {
      case 10:
        s = '\u521d\u5341';
        break;
      case 20:
        s = '\u4e8c\u5341';
        break;
        break;
      case 30:
        s = '\u4e09\u5341';
        break;
        break;
      default:
        s = calendar.nStr2[Math.floor(d / 10)];
        s += calendar.nStr1[d % 10];
    }
    return (s);
  },

  /**
   * 年份转生肖[!仅能大致转换] => 精确划分生肖分界线是“立春”
   * @param y year
   * @return Cn string
   * @eg:var animal = calendar.getAnimal(1987) ;//animal='兔'
   */
  getAnimal: function (y) {
    return calendar.Animals[(y - 4) % 12]
  },

  /**
   * 传入阳历年月日获得详细的公历、农历object信息 <=>JSON
   * @param y  solar year
   * @param m  solar month
   * @param d  solar day
   * @return JSON object
   * @eg:console.log(calendar.solar2lunar(1987,11,01));
   */
  solar2lunar: function (y, m, d) { //参数区间1900.1.31~2100.12.31
    //年份限定、上限
    if (y < 1900 || y > 2100) {
      return -1; // undefined转换为数字变为NaN
    }
    //公历传参最下限
    if (y == 1900 && m == 1 && d < 31) {
      return -1;
    }
    //未传参  获得当天
    if (!y) {
      var objDate = new Date();
    } else {
      var objDate = new Date(y, parseInt(m) - 1, d)
    }
    var i, leap = 0,
      temp = 0;
    //修正ymd参数
    var y = objDate.getFullYear(),
      m = objDate.getMonth() + 1,
      d = objDate.getDate();
    var offset = (Date.UTC(objDate.getFullYear(), objDate.getMonth(), objDate.getDate()) - Date.UTC(1900, 0, 31)) / 86400000;
    for (i = 1900; i < 2101 && offset > 0; i++) {
      temp = calendar.lYearDays(i);
      offset -= temp;
    }
    if (offset < 0) {
      offset += temp;
      i--;
    }

    //是否今天
    var isTodayObj = new Date(),
      isToday = false;
    if (isTodayObj.getFullYear() == y && isTodayObj.getMonth() + 1 == m && isTodayObj.getDate() == d) {
      isToday = true;
    }
    //星期几
    var nWeek = objDate.getDay(),
      cWeek = calendar.nStr1[nWeek];
    //数字表示周几顺应天朝周一开始的惯例
    if (nWeek == 0) {
      nWeek = 7;
    }
    //农历年
    var year = i;
    var leap = calendar.leapMonth(i); //闰哪个月
    var isLeap = false;

    //效验闰月
    for (i = 1; i < 13 && offset > 0; i++) {
      //闰月
      if (leap > 0 && i == (leap + 1) && isLeap == false) {
        --i;
        isLeap = true;
        temp = calendar.leapDays(year); //计算农历闰月天数
      } else {
        temp = calendar.monthDays(year, i); //计算农历普通月天数
      }
      //解除闰月
      if (isLeap == true && i == (leap + 1)) {
        isLeap = false;
      }
      offset -= temp;
    }
    // 闰月导致数组下标重叠取反
    if (offset == 0 && leap > 0 && i == leap + 1) {
      if (isLeap) {
        isLeap = false;
      } else {
        isLeap = true;
        --i;
      }
    }
    if (offset < 0) {
      offset += temp;
      --i;
    }
    //农历月
    var month = i;
    //农历日
    var day = offset + 1;
    //天干地支处理
    var sm = m - 1;
    var gzY = calendar.toGanZhiYear(year);

    // 当月的两个节气
    // bugfix-2017-7-24 11:03:38 use lunar Year Param `y` Not `year`
    var firstNode = calendar.getTerm(y, (m * 2 - 1)); //返回当月「节」为几日开始
    var secondNode = calendar.getTerm(y, (m * 2)); //返回当月「节」为几日开始

    // 依据12节气修正干支月
    var gzM = calendar.toGanZhi((y - 1900) * 12 + m + 11);
    if (d >= firstNode) {
      gzM = calendar.toGanZhi((y - 1900) * 12 + m + 12);
    }

    //传入的日期的节气与否
    var isTerm = false;
    var Term = null;
    if (firstNode == d) {
      isTerm = true;
      Term = calendar.solarTerm[m * 2 - 2];
    }
    if (secondNode == d) {
      isTerm = true;
      Term = calendar.solarTerm[m * 2 - 1];
    }
    //日柱 当月一日与 1900/1/1 相差天数
    var dayCyclical = Date.UTC(y, sm, 1, 0, 0, 0, 0) / 86400000 + 25567 + 10;
    var gzD = calendar.toGanZhi(dayCyclical + d - 1);
    //该日期所属的星座
    var astro = calendar.toAstro(m, d);

    return {
      'lYear': year,
      'lMonth': month,
      'lDay': day,
      'Animal': calendar.getAnimal(year),
      'IMonthCn': (isLeap ? "\u95f0" : '') + calendar.toChinaMonth(month),
      'IDayCn': calendar.toChinaDay(day),
      'cYear': y,
      'cMonth': m,
      'cDay': d,
      'gzYear': gzY,
      'gzMonth': gzM,
      'gzDay': gzD,
      'isToday': isToday,
      'isLeap': isLeap,
      'nWeek': nWeek,
      'ncWeek': "\u661f\u671f" + cWeek,
      'isTerm': isTerm,
      'Term': Term,
      'astro': astro
    };
  },

  /**
   * 传入农历年月日以及传入的月份是否闰月获得详细的公历、农历object信息 <=>JSON
   * @param y  lunar year
   * @param m  lunar month
   * @param d  lunar day
   * @param isLeapMonth  lunar month is leap or not.[如果是农历闰月第四个参数赋值true即可]
   * @return JSON object
   * @eg:console.log(calendar.lunar2solar(1987,9,10));
   */
  lunar2solar: function (y, m, d, isLeapMonth) { //参数区间1900.1.31~2100.12.1
    var isLeapMonth = !!isLeapMonth;
    var leapOffset = 0;
    var leapMonth = calendar.leapMonth(y);
    var leapDay = calendar.leapDays(y);
    if (isLeapMonth && (leapMonth != m)) {
      return -1;
    } //传参要求计算该闰月公历 但该年得出的闰月与传参的月份并不同
    if (y == 2100 && m == 12 && d > 1 || y == 1900 && m == 1 && d < 31) {
      return -1;
    } //超出了最大极限值 
    var day = calendar.monthDays(y, m);
    var _day = day;
    //bugFix 2016-9-25 
    //if month is leap, _day use leapDays method 
    if (isLeapMonth) {
      _day = calendar.leapDays(y, m);
    }
    if (y < 1900 || y > 2100 || d > _day) {
      return -1;
    } //参数合法性效验

    //计算农历的时间差
    var offset = 0;
    for (var i = 1900; i < y; i++) {
      offset += calendar.lYearDays(i);
    }
    var leap = 0,
      isAdd = false;
    for (var i = 1; i < m; i++) {
      leap = calendar.leapMonth(y);
      if (!isAdd) { //处理闰月
        if (leap <= i && leap > 0) {
          offset += calendar.leapDays(y);
          isAdd = true;
        }
      }
      offset += calendar.monthDays(y, i);
    }
    //转换闰月农历 需补充该年闰月的前一个月的时差
    if (isLeapMonth) {
      offset += day;
    }
    //1900年农历正月一日的公历时间为1900年1月30日0时0分0秒(该时间也是本农历的最开始起始点)
    var stmap = Date.UTC(1900, 1, 30, 0, 0, 0);
    var calObj = new Date((offset + d - 31) * 86400000 + stmap);
    var cY = calObj.getUTCFullYear();
    var cM = calObj.getUTCMonth() + 1;
    var cD = calObj.getUTCDate();

    return calendar.solar2lunar(cY, cM, cD);
  },
  /**
   * 下一个生日
   * @param y   year
   * @param m   month
   * @param d   day
   * @param nongli  
   * @param isLeapMonth  lunar month is leap or not.[如果是农历闰月第四个参数赋值true即可]
   * @return [year,month,day,days]
   */
  birthday: function (y, m, d, nongli, isLeapMonth) { //参数区间1900.1.31~2100.12.1
    var date;
    var now = new Date();
    if (nongli) {
      // 获取农历年(防止阳历年已过,农历年还没过)
      var now_d = this.solar2lunar(now.getFullYear(), now.getMonth() + 1, now.getDate());
      var now_year = now_d.lYear;
      date = this.birthBylunar(now_year, m, d, isLeapMonth);
      if (this.daysBetween(date) <= 0) {
        now_year++;
        date = this.birthBylunar(now_year, m, d, isLeapMonth);
      }
    } else {
      var now_year = now.getFullYear();
      date = this.solar2lunar(now_year, m, d);
      if (this.daysBetween(date) <= 0) {
        now_year++;
        date = this.solar2lunar(now_year, m, d);
      }
    }
    return [date.cYear, date.cMonth, date.cDay, this.daysBetween(date)];
  },
  birthBylunar: function (y, m, d, isLeapMonth) {
    // 闰月生日
    if (isLeapMonth && this.leapMonth(y) == m) {
      d = this.lunar2solar(y, m, d, isLeapMonth);
    } else {
      d = this.lunar2solar(y, m, d, false);
    }
    return d;
  },
  daysBetween: function (d) {
    var now = new Date();
    var date = new Date(d.cYear, d.cMonth-1, d.cDay);
    // console.log(now, date);
    return parseInt((date.getTime() - now.getTime()) / (24 * 3600 * 1000));
  }
};

HTML5 canvas 多行文本

使用JavaScript的原型特性,这样就可以从画布上下文中调用该函数

CanvasRenderingContext2D.prototype.wrapText = function (text, x, y, maxWidth, lineHeight) {

    var lines = text.split("\n");

    for (var i = 0; i < lines.length; i++) {

        var words = lines[i].split(' ');
        var line = '';

        for (var n = 0; n < words.length; n++) {
            var testLine = line + words[n] + ' ';
            var metrics = this.measureText(testLine);
            var testWidth = metrics.width;
            if (testWidth > maxWidth && n > 0) {
                this.fillText(line, x, y);
                line = words[n] + ' ';
                y += lineHeight;
            }
            else {
                line = testLine;
            }
        }

        this.fillText(line, x, y);
        y += lineHeight;
    }
}

用法

var myCanvas = document.getElementById("myCanvas");
var ctx = myCanvas.getContext("2d");
ctx.fillStyle = "black";
ctx.font = "12px sans-serif";
ctx.textBaseline = "top";
ctx.wrapText("Hello\nWorld!",20,20,160,16);

通过JS记录和阻止http劫持

相关代码

try {
    setTimeout(function () {
        t = Math.random();
        data = {};
        data.from = location.href;
        data.urls = [];
        isUrlLooksGood = function (url) {
            if (url === 'about:blank') { return true; }
            url = new URL(url); hostname = url.hostname;
            var l = getLocation(url);
            return /(baidu.com|qq.com|mydomain.com)$/.test(l.hostname);
        };
        $('script').each(function () {
            var src = $(this).attr('src'); if (!src) { return; }
            if (!isUrlLooksGood(src)) {
                data.urls.push(src);
            }
        });
        $('iframe').each(function () {
            var src = $(this).attr('src'); if (!src) { return; }
            if (!isUrlLooksGood(src)) {
                data.urls.push(src);
            }
        });
        if (data.urls.length > 0) {
            (new Image).src = '/http_hijack.png?t=' + Math.random() + '&d=' + encodeURIComponent(JSON.stringify(data));
        }
    }, 3000);
} catch (e) { }

手机移动端富文本编辑器比较

Quill

Quill is a modern WYSIWYG editor built for compatibility and extensibility. https://quilljs.com – API Driven Design – Custom Content and Formatting – Cross Platform – Easy to Use 重要的是linkedin也在用

Eleditor

  • 兼容Android&ios
  • Eleditor的开发是为了解决移动端项目中的富文本编辑问题。具有
  • 轻量,可定制,注重用户体验等特点 -开源基于MIT协议,允许自由使用和修改代码

simditor

An Easy and Fast WYSIWYG Editor

  • 有插件和文档(非移动优先)

vue-html-editor

A Vue.js component implementing the HTML editor with the jQuery summernote plugin.

Squire

the textarea of the future

Angular-trix

A rich wysiwyg text editor directive for angularjs.

textAngular

textAngular is a super cool WYSIWYG Text Editor directive for AngularJS

Draft.js

Rich Text Editor Framework for React