IE problems

I. Something only works after you open the developer tool (F12)

In IE9, some functions related to console are only activated when the Developer Tool is opened.

For example, the console.dir(...) doesn't work unless the Developer Tool (F12) is open.

Tosolve this problem, we just need to use console.log(...) instead of console.dir(...). 

You can try console.dir([1,2]) and console.log([1,2]) to see the difference.

Related Link:

http://stackoverflow.com/questions/7742781/why-javascript-only-works-after-opening-developer-tools-in-ie-once

http://vvicrew.com/why-ie-javascript-only-works-with-developer-toolbar-open/#.VZwMvPnF8Ss

http://stackoverflow.com/questions/11954152/whats-the-difference-between-console-dir-and-console-log

About the console:

https://msdn.microsoft.com/en-us/library/dn255006(v=vs.85).aspx

Difference between console.log and console.dir:

https://msdn.microsoft.com/en-us/library/hh772179(v=vs.85).aspx

https://msdn.microsoft.com/en-us/library/jj152132(v=vs.85).aspx

II. Back button behavior on a page with Iframe

http://www.webdeveasy.com/back-button-behavior-on-a-page-with-an-iframe/

III. How to check whether a browser is IE 11
http://stackoverflow.com/questions/17907445/how-to-detect-ie11

if (navigator.appName == 'Microsoft Internet Explorer')
  {
    // Do something
    
  }
  else if (navigator.appName == 'Netscape')
  {
    // If you are here, it means your browser is not IE10 or IE older
    if (re.exec(ua) != null)
      // If you are here, it means your browser is IE11
  }

Good Articles about Web Application ---- JavaScript

1. How to access parent elements from a child window or frame
http://www.esqsoft.com/javascript_examples/iframe_talks_to_parent/

2. Web App Architecture - the Spring MVC - AngularJs stack
http://blog.jhades.org/developing-a-modern-java-8-web-app-with-spring-mvc-and-angularjs/

3. The Evolution of Asynchronous javaScript
https://blog.risingstack.com/asynchronous-javascript/?utm_source=javascriptweekly&utm_medium=email

4. Good tools for asynchronous js
Promises/A+ : https://promisesaplus.com/
koa: http://koajs.com/
bluebird: https://github.com/petkaantonov/bluebird

5. Whys, hows and problems of promises:
http://blog.getify.com/promises-part-1/
http://blog.getify.com/promises-part-2/
http://blog.getify.com/promises-part-3/
http://blog.getify.com/promises-part-4/
http://blog.getify.com/promises-part-5/