wcag 2 1 differences

As we all know, there are 2 kinds of tags in JSP to contain other JSP or file1. The include directive is actually Java code2, JSP action tag, you can also take parametersNow with my understanding of the simple next two kinds of difference:1, include directive is the JSP in the compilation phase, all the pages in the page with the instructions included in the compilation and synthesis of an HTML page display

There are two symbols used in the C language Reference header file, with the header file Stdio.h as an example:(1) #include (2) #include "stdio.h"There are different ways of referencing these two types.The first method of reference, the compiler only in the standard library header file matching;The second way of referencing, the compiler first in the project directory to match, if not, then to the standard

, including arrays. Objects combine data and methods to encapsulate them in a class so that each object can implement its own characteristics and behavior. C + + allows functions and variables to be defined as global. In addition, the structure and union in C + + is removed in Java, eliminating unnecessary hassles.Four, stringC does not support string variables, using a null terminator in a C program to represent the end of a string, in Java, strings are implemented using class objects (STRINR a

statement, if you still cannot understand the above essentials, we can think that HTML documents can use CoreAPI and HTMLAPI; XML documents can only use CoreAPI. In other words, CoreAPI is the overlapping part of HTML and XML, while HTMLAPI is the part that cannot be shared. As the name suggests, it is limited to HTML documents. This is a preliminary understanding of Core/HTML. Understanding DOM Level1 Core The essence of understanding DOM Level1Core is to regard Core as a Document composed of

1. PrefaceThere are several more important concepts that need to be popularized before garbage collection.2. Concepts and differences in memory overflow and memory leaks:(1): Memory overflow: Refers to the program in the application of memory, there is not enough memory space to allocate, the system can not meet the re

Original article: understanding the differences between C #4 Dynamic (1)-var, object, and dynamic and the use of dynamic Reading directory: I. Why are the three of them Ii. Reasons for arbitrary assignment Iii. Usage of dynamic Iv. Precautions for using dynamic I. Why are the three of them? The reason for the comparison is that they are very similar in use. You can use the variables they declare to a

1. Data Types and variables The variable types in C ++ are similar to those in Java. Like Java, C ++ has int and double types. However, the value range of these numeric types depends on the machine. For example, on a 16-bit system, such as running DOS or Windows 3. on the PC of x, int Is Dual-byte (2-byte), and the value range is much smaller than that of Java's 4-byte int. On these machines, if int is not

MVC, MVP, and MVVM are both modes used to solve the problem of interface rendering and logical code separation. In the past, I only had a partial understanding of them, but I have not studied them in depth. I also have some knowledge about the concepts and differences in them. Now let's look at the information and understand the differences between the three models. You are welcome to shoot bricks. Reading

IPv6 network protocol is introduced when our IP address is short. In addition to providing us with a wider address space, there are many differences from the previous version. Now let's make a comparison between the IPv6 Header and IPv4 header versions. Comparison between IPv4 and IPv6 protocols Header Format As shown in table 1, the IPv4 header contains 20 bit + options and 13 fields, including 3 pointe

[Mr. mai] the difference between Laravel framework and ThinkPHP for Beginners (1)-I found the difference between Laravel framework and TP framework as a beginner in PHP, due to time issues and lack of knowledge, I would like to write out some of them first. if you have any mistakes, I hope you can make an ax... 1. different rendering templates: In the Laravel framework, return view () is used to render t

This article will focus on the differences between JS and IE and their solutions. In IE, you can use methods to obtain general attributes to obtain custom attributes, or you can use getAttribute () get custom attributes. In Firefox, you can only use getAttribute () to get custom attributes. Differences between JS and IE and Their Solutions 1.doc ument. formName.

greater than 2048. For example, on a machine with 1 GB of memory, it is about 0.1 million left-right. You can check the specific number by CAT/proc/sys/fs/file-max. Generally, this number has a great relationship with the system memory. The biggest disadvantage of the SELECT statement is that there is a limit on the number of FD opened by the process. This is not suitable for servers with a large number of connections. Although you can also choose a

Temporary tables, table variables, these 2 brothers are not unfamiliar when used in peacetime. Most of the time, we borrowed the 2 brothers to do the caching of intermediate result sets. Then I'll simply say that the 2 brothers in the query time some of the small differences1, first I set up a table to store 100W of data--the data is simple, but every line is ful

, the vro software starts to start. Use the show ver command to view the corresponding version information.Note the following when connecting with CISCO:2. Differences in the default link layer encapsulation are mainly used for DDN configuration)1. in the configuration of Huawei VRP1.0 and earlier versions, the default link layer Encapsulation Format of CISCO is

either side of the communication is actively disconnected.Socket is the TCP/IP protocol encapsulation, socket is only an interface is not protocol, through the socket we can use the TCP/IP protocol, in addition to TCP, you can also use the UDP protocol to pass data.When creating a socket connection, you can specify the transport layer protocol, which can be TCP or UDP, which is a TCP connection and vice versa.Socket principleSocket connection, requires at least a pair of sockets, divided into C

Introduction: OracleDatabase 10 Gb introduces the latestData PumpData Dump technology allows DBAs or developers to quickly move database metadata (object definition) and Data to another oracle database. So traditional dataImport and ExportWhat is the difference between the technology and the new data pump technology? Role of Data Pump Export Import (EXPDP and IMPDP) 1. implement logical backup and logical recovery.

1. Remove the old IE workspaceThe main goal of the new final edition is to be faster and more fashionable, so the relevant technologies and workspaces that support earlier than the IE9 version are removed. This means that if you want or need to support ie6-8, you have to use back to version 1.12, because even the 2.X version does not fully support browsers older than IE9.Note: Some other features have been

contact with these ideas. We will analyze in detail the causes of errors in each opinion later. In the future, you will have a reference in your study and interview. --------------------------------------- The following is a similar question from the WCF Chinese forum, which references ymq: Yes, I used many web services in the past, and I am familiar with it. Recently I came into contact with WCF, maybe it is the reason why we are new to contact. It seems that the Web Service is much more compl