Before we work on CRUD operation (Create, Read, Update, Delete), it's important to understand the entity lifecycle and how it is being managed by the EntityFramework. During an entity's lifetime, each entity has an entity state based on the operation
Styling the Action Bar If you want to implement a visual design that represents your app's brand, the action bar allows you to customize each detail of its appearance, including the action bar color, text colors, button styles, and more. To do so, yo
注册和声明周期 my = Polymer({ is: "proto-element", created: function() { this.innerHTML = 'created'; } }); //注册之后会返回构造函数,创建实例的两种方法 var el1 = document.createElement('proto-element'); var el2 = new my(); 使用polymer注册自定义元素,created function 中的this.innerHTML