I thought I know the Function definition, execution context and the behavior of this in JavaScript. However, I realized that actually I don't or the knowlege is still not firmly grounded in my mind when I wrote some code similar to below snippet but have no instinct of the error.

After translated a blog about how Promise works in a more functional programming way, I tried to build something to make Ext Ajax call to work in Promise style as a practice.

Recently, I encounter two very interesting issues when using ng-repeat in AngularJS. Not completely understanding the $watch and $digest() is the root cause.

When we are writing Unit Test for AngularJS Controller or Service, it's pretty common to verify the data posted to server using $httpBackend in ngMock module.

我之前都有接触过关于 Promise 的一些文章，但是对它的感觉并不大。因为觉得虽然回调风格确实有问题，但我写的代码还没有复杂到那种程度，所以，要去使用的感觉并不强烈。