new var

The New keyword in JavaScript is completely different from the concept in C#,java.Example: Var a=new a ();Let's see what happens with new in JavaScript.var a={};//set up a new object;A.__proto__=a.prototype; Point A's prototype to A; Then a inherits

Transferred from: http://blog.chinaunix.net/uid-24250828-id-3198922.html1)/var/log/secure: Record log in system to access data files;For example: POP3,SSH,TELNET,FTP, etc. will be recorded here.2)/ar/log/btmp: Record login This information record,

1)/var/log/secure: Record the log in system Access data file; For example: Pop3,ssh,telnet,ftp and so on will be recorded here. 2)/ar/log/btmp: Record logged in this information record, has been encoded, so must be resolved by the last; For

Use of new keywordsIn addition to instantiating an object or a rare case where data needs to be loaded at a time delay, you basically do not need to use the new keyword. Allocating a large number of new variable addresses in Javascript is a very

1.function A () {} The definition of this method is global, even if the definition after the call, the system will not complain, it can be understood that the system in the implementation of the method to find the definition of the location to

The following source code is from WebKit:Differences between var d = Date () and VAR d = new dateThe former is just a normal function call and is executed through jsvalue. getcalldata, while the latter is to create an object throughJsvalue.

There should be no difference, both of which are generating a default object object.JS and other languages, all objects are the base class is object, so the new object () and simple {} is the same empty object, is the default object.Originally I

Original link: http://www.2cto.com/kf/201204/128406.html "invasion and deletion"While JavaScript declares variables, while declaring them with the Var keyword and declaring them without the keyword, there are many times when it's not a problem to

Both are generated as a default object object.JS and other languages, all objects are the base class is object, so the new object () and simple {} is the same empty object, is the default object.Originally I thought {} should be an object without

Related article:. NET framework3.5 new feature 1:LAMBDA expression Define variables with Var In c#3.0, a new way of declaring variables is provided, which is var. With this keyword, you do not need to specify the type when declaring a variable,