empty object

[0]5 type of data:[0.1] Basic data type:Undefined, Null, Boolean, number, String[0.1.1] Basic type value refers to simple data segments, 5 basic types are accessed by value, because you can manipulate the actual values saved in the variableThe value

Reference Video: http://www.imooc.com/video/6430The this in JavaScript is more flexible, but also let a lot of beginners can not touch the mind, then according to the different environment, in the same function, different invocation mode, then this

http://blog.csdn.net/yiluoak_47/article/details/7766760First, the difference between null and undefined:Executes typeof on declared but uninitialized and undeclared variables, returning "undefined".Null represents an empty object pointer, and the

Original blog: https://www.cnblogs.com/pssp/p/5216085.htmlThe first thing to say is thatthe point of this is not deterministic at the time of the function definition, and only when the function is executed can you determine who the this is pointing

ObjectEverything in JavaScript is an object, such as a string, a number, an array, a date, and so on, the object is the data that owns the property and method, and is the reference value. A property is an object-dependent value that can beAction to

JavaScript objects can be viewed as unordered collections of attributes, each of which is a pair of key values that can be added to the deletion. Everything in JavaScript is an object: A string, a number, an array, a date, and so on. In addition

[0]6 type of data :[0.1] Basic data type: Undefined, Null, Boolean, number, String[0.1.1] Basic type value refers to simple data segments, 5 basic types are accessed by value, because you can manipulate the actual values saved in the variableThe

From exports and module. although the commonJS modular writing method is not used in the current work, the source code or article of this writing method is often seen, and sometimes exports and module are seen. exports is a bit silly... I think

This article mainly introduces the advanced features of javascript object-oriented programming, and detailed the creation, access, deletion, object type, extension, and so on of javascript objects in the form of examples, for more information about

Java Collection Framework Summary (4) Use of the--list interfaceThe list collection represents an ordered collection, and each element in the collection has its corresponding sequential index. The list collection allows you to use duplicate elements,

PHP design pattern series-null object pattern (NullObject) 1. Pattern Definition The empty object mode is not one of the 23 classic design patterns mentioned in GoF's design patterns, but it is a pattern that often appears and cannot be ignored.

Prototype inheritance of JavaScript JavaScript is an object-oriented language. In JavaScript, there is a classic saying that everything is an object. Since it is object-oriented, it has three main characteristics of object-oriented: encapsulation,

Typical tutorial on advanced features of javascript Object-Oriented Programming (worthy of favorites) and javascript object-oriented This article describes the advanced features of javascript object-oriented programming. We will share this with you

Javascript object-oriented Coding 1. Create an empty object and add attributes and methods to the empty object VaR person = {}; // an empty object is created. Add attributes and methods to an object Person. Name = "hello "; Person. Say =

  Many Java operations on blob and clob fields in Oracle on the network are not comprehensive, some are inaccurate, and some are even nonsense. The recent project uses this knowledge and summarizes it here.Environment:Database: Oracle 9iAPP server:

1. Direct Volume: the value of direct volume can be confirmed at the same time of declaration; undefined, true/false, String, value, regular expression, null 2. expression: the syntax structure of the result generated by operators and operators,

Transferred from:Http://snandy.iteye.com/blog/420000   1. () parentheses OperatorThe () operator is commonly used to call/execute a function.JS Code // Fun1 Function fun1 (){ Alert ('I was called '); } Fun1 () // Fun2 with Parameters

This article describes in detail the prototype inheritance of JavaScript, which is very detailed. For more information, see JavaScript as an object-oriented language. In JavaScript, there is a classic saying that everything is an object. Since it is

I understand the difference between the exports and the module.exports, welcome everyone to spit Groove ~In order to better understand exports and module.exports the relationship, we first to complement the JS Foundation. Example:App.jsvar a = {name:

Module.exports and exports are the same objects referenced to, similar to the following code (for example, not completely correct): var module.exports = {};var exports = Module.exports;Within the module, they point to the same empty object