ecmascript 5 tutorial

Document directory Objects Original post: http://ejohn.org/blog/ecmascript-5-objects-and-properties/ 　@ By: Aaron Some new APIs are included in the specifications, but more interesting functions play a role in the object/attribute code. How can we use them to function your objects, use private "getters" and "settses" to prevent enumeration, operations, or deletion, or even adding new properties. in

Strict mode (Strict mode) is a new feature of ECMAScript 5, which allows you to place the entire program, or a function, in a "strict" operating context. This strict context prevents certain actions from being thrown and throws more exceptions. Although ECMAScript 5 is backward-compatible for

ECMAScript operator. If you are studying JavaScript, you can check the 2.9 operator. 2.9.1 unary Operators The unary operator has only one parameter, that is, the object or value to be operated. 1. delete: delete references to previously defined object attributes or methods. However, this operator cannot delete undefined attributes and methods. Example: The Code is as follows: Var o = new Object;O. name = "Nicolas ";O. show = function (){Return "t

description of accessor properties and data properties, there are two seemingly identical descriptions, Let me not understand.The answer to this question suddenly dawned on the fact that accessor properties and data properties are a way of defining an intrinsic form of an object's properties, which is a method of making object properties like an AP from AD, which alters the representation of an object's properties, not the additional attributes. The strict theory is that the properties of an ob

to the mathematical Convention, when the array is empty, some directly returns false, every directly returns True,So when designing to a feature business, you need to be aware of this, and it's best to add a qualification to ensure that the array is not empty and that the code is intended to be read more clearly.At the same time, it is understood from the specification that, as with logic and similarity, when one of the judgments returns false, the entire calculation stops directly, returning t

case of an empty array, so according to the mathematical Convention, when the array is empty, some directly returns false, every directly returns True,So when designing to a feature business, you need to be aware of this, and it's best to add a qualification to ensure that the array is not empty and that the code is intended to be read more clearly.At the same time, it is understood from the specification that, as with logic and similarity, when one of the judgments returns false, the entire ca

Here is a summary of the use of the ECMAScript object model to manipulate goup and user's common situation, because more content, so split into two parts, this part of the main contents are as follows:1, get the current SharePoint site All group2. Get the title and group of the current logged-on user3. Get all users under the specified group4. Get specific information for all users under the specified group5, get all the group's specific information f

0 0 0 1 P, Q, and R are proportional factors along the X, Y, and Z directions, respectively. 2 zooming along the X axis and 0.5 zooming along the Y axis is displayed. Figure 4. Scaling Effect Multiple conversions To apply multiple transformations to a vector, we can simply multiply the vector by the first transformation matrix, then multiply the obtained vector by the second transformation matrix, and so on. Because vector and matrix multiplication are associated, we can also multiply al

Recently, the charm of the family released the charm of the Blue 5 of the entire new generation of the Blue series, still positioning thousand machine market, still equipped with Mback key, support the positive home key fingerprint identification and Mback key touch return function. In addition, the charm Blue 5 not only support fingerprint unlock, but also support micro-letter and Alipay fingerprint paymen

The following tutorial shows you how to run and debug applications using ARMDS-5 tools. • 1 import the sample project to eclipse • 2. Use eclipse to create a new C/C ++ Project • 3 Use eclipse to compile the gnometris Project • 4 compile the gnometris project under the command line • 5 load the gnometris program on the Real-Time System Model • 6 load the gnometri

ASP. net mvc 5 + EF 6 getting started tutorial (5) Model and Entity Framework, mvcentity Source: Slark. NET-blog Park http://www.cnblogs.com/slark/p/mvc-5-ef-6-get-started-model.html Previous section: ASP. net mvc 5 getting started tutor