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//获取本地IP地址
var os = require('os');
var IPv4,hostName;
hostName=os.hostname();
for(var i=0;i<os.networkInterfaces().eth0.length;i++){
if(os.networkInterfaces().eth0[i].family=='IPv4'){
IPv4=os.networkInterfaces().eth0[i].address;
}
}
console.log('----------local IP: '+IPv4);
<!doctype html>
<html>
<head>
<!-- Run in full-screen mode. -->
<meta name="apple-mobile-web-app-capable" content="yes">
<!-- Make the status bar black with white text. -->
<meta name="apple-mobile-web-app-status-bar-style" content="black">

mathclub是最近做的一个个人项目,帮助考SAT的同学通过在线做题、回顾、问答提高成绩。用户功能有:计次/计时做题、成绩单、错题分布、错题回顾、提问、汇总以及注册登录。管理后台主要是题库管理、学员管理、成绩单管理、问题回复。怎么看都像学校里的课设,的确项目本身并不出奇,开发上选用的一些方案或许更有意思。

整个项目一个人从产品需求、原型设计、前后端开发到部署历时2周左右。可以从截图上感受一下:

image

技术选型上服务端是Node.js,应用框架选了老牌的Express(4.x变化挺大不少中间件都废了),数据服务用的是MongoLab(MongoDB的云服务平台),图片上传用的是又拍云,程序部署在Nodejitsu上。模板引擎没选主流的Jade或ejs,而是用Express React Views它实现了在服务端渲染React组件。前端框架是用React,这次有意想追求前后端全部组件化的组织。之前是用Webpack实现CommonJS模块打包,这次用Browserify配置更简单,它有丰富的transform很赞,其中的reactify转换React的JSX很完美。CSS用Sass+autoprefixer让人省心。将这一切串起来的自动构建工具是Gulp。我其实崇尚用最精简的工具组合开发,上述组合在我看来比较精简了。(帖纸留念)

![image](http://satexam.b0.upaiyu

<!doctype html>
<html>
<head>
<!-- Run in full-screen mode. -->
<meta name="apple-mobile-web-app-capable" content="yes">
<!-- Make the status bar black with white text. -->
<meta name="apple-mobile-web-app-status-bar-style" content="black">
@huixisheng
huixisheng / 0_reuse_code.js
Created July 30, 2014 01:09
Here are some things you can do with Gists in GistBox.
// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

捕捉浏览器中的JS运行时错误,主要通过监听window.onerror来实现。但是对于不同的脚本执行方式以及不同的浏览器,能捕获到的信息会有区别。

window.onerror 讲接收3个参数:

  • msg:错误描述,比如:a is not defined
  • url:出错脚本所在的url
  • lineNumber:出错脚本的行数

本文将对不同浏览器和不同的脚本执行方式进行测试,并总结这些区别。

常用的 HTML 头部标签

详细介绍参见原文:yisibl/blog#1

<!DOCTYPE html> <!-- 使用 HTML5 doctype,不区分大小写 -->
<html lang="zh-cmn-Hans"> <!-- 更加标准的 lang 属性写法 http://zhi.hu/XyIa -->
<head>
    <meta charset='utf-8'> <!-- 声明文档使用的字符编码 -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> <!-- 优先使用 IE 最新版本和 Chrome -->

Libraries

  • jQuery - The de-facto library for the modern age. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.
  • Backbone - Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface.
  • AngularJS - Conventions based MVC framework for HTML5 apps.
  • Underscore - Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects.
  • lawnchair - Key/value store adapter for indexdb, localStorage