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Study Notes Chapter 4 Design webpage text, Study Notes Chapter 4 Key points: 1. Familiar with HTML 4 formatted text labels; 2. Master the text labels added to HTML5; 3. correctly select tags to design webpage text information. 4.1 Use text label 4.1.1 Title text 4.1.2 paragraph text 4.1.3 reference text A piece of text cannot be directly placed in 4.1.4 emphasized text 4.1.5 format text 4.1.6 outpu

Struts2 Study Notes (10) -- custom interceptor and struts2 Study Notes The Struts2 interceptor is implemented based on the idea of AOP, while the implementation of AOP is based on dynamic proxy. The Struts2 interceptor intercepts an Action before or after it is accessed, and the Struts2 interceptor is pluggable. The Struts2 interceptor stack is a chain that connects the interceptor in sequence, when the int

Linux Study Notes (7)-view system resources and linux Study Notes Monitor System Resources: vmstat # Vmstat [sampling time] [sampling times] For example: # vmstat 3 2 Sample once every 3 seconds. A total of 2 samples Field interpretation of output information R Indicates the running queue. If the running queue is large, the CPU is busy. B Indicates the blocked process.

Linux Study Notes (5)-process management and linux Study Notes Process Overview A process is a program or command being executed. Each process has its own address space and occupies certain system resources. A process is a running program. Role of process management Determine the running status of the server View PROCESSES IN THE SYSTEM Kill a process (rarely used, usually using a normal shutdown method

CentOS Study Notes-getting started with centos Study Notes I started to learn about Linux today. I mainly learned how to use servers. So I chose CentOS as the Linux release. Why do I choose CentOS? One reason is that Red Hat Enterprise Linux has compiled the source code according to the open source code. Because of the same source code, some servers that require high stability use CentOS instead of the com

Struts2 Study Notes (11)-file upload and struts2 Study Notes 1. Upload a single file Steps for uploading a single file: 1) Create an upload jsp page The file upload form must be submitted in POST mode. The encoding type is enctype = "multipart/form-data". The default format is application/x-www-form-urlencoded. For example: 1 2) create an Action class for processing file uploads Declare related attribute

AngularJS1.X Study Notes 2-Data Binding details, angularjs Study Notes In the previous article, Angular was recognized as a whole, and Angular features have been further learned from now on. This course is about data binding. All MVC frameworks use data binding, such as ThinkPHP and struts. Only data binding can separate the model layer from the view layer and implement MVC. Angular supports two-way data bi

Idiom Study Notes (1), three-column layout, idiom Study Notes The three-column layout is fixed on the left and right, and the middle self-adaptation is often used in Web pages. There are many ways to achieve this layout. Here I mainly write five types. They are floating, positioning, table, flexBox, and grid. Here, I would like to thank some teachers for sending free tutorials online, so that we can learn

NodeJS Study Notes: Connect middleware module (I), nodejs Study Notes I hope you can continue reading my articles in this series. This is also the greatest encouragement and support for me. Let's make common progress and help each other. Now, go to today's topic, What is "Connect" and how to understand middleware? Let's take a look at today's article with questions. How to Understand "Middleware "? In my u

Less Study Notes 27/8/17, less study notes Less official website Http://less.bootcss.com/ Less is a dynamic style language. "Style. less" is directly changed to "style. less. For example: Less can now be run on clients (such as IE +, Webkit, Firefox) and servers (such as node. js. As mentioned above, Less is an extension of CSS. It is not only backward compatible, but also adds many additional functions b

OpenCV2 Study Notes (18): displays the Frame Rate of the video stream and opencv2 Study Notes Recently, you need to display the frame rate (FPS) in real time on the video. FPS is the abbreviation of Frame Per Second. The Chinese meaning is the number of frames Per Second. The development platform is VS2013 + OpenCV2.4.9. FPS is used to measure the quantity of information used to save and Display Dynamic vi

Angular Study Notes: angular's $ filter service analysis and angular Study Notes First, we will introduce the $ filter service: 1. $ filter is a dedicated service for formatting data; 2. AngularJS has eight built-in filters: currency, date, filter, json, limitTo, lowercase, uppercase, number, and orderBy; 3. Filters can be nested and separated by the pipeline symbol "|" (a bit like linux ); 4. The filter ca

Frontend Development Study Notes 1: Development Study Notes I just spent some time learning html and css, and a rough look at javascript. After reading the tutorial, I made the following page. (This is the original) There are some problems, such as some rounded corner buttons in the tutorial, use a layer-3 nested structure, which is similar to It seems a little outweighs the loss. In fact, it can

Selenium Study Notes (smart waiting) and selenium Study Notes The blogger is trying to use selenium to automatically log on to the Baidu homepage. The element locating method has not been written wrong after repeated attempts, and the cause of the problem is finally found: The script runs faster than the page loading speed For example, the Baidu homepage logon example and script have already started searchi

SQL Study Notes (5) --------- Time query statements and Study NotesMySQL NOW () function definition and usage The NOW () function returns the current date and time.Example 1 The SELECT statement is as follows: SELECT NOW(),CURDATE(),CURTIME() The result is similar: NOW () CURDATE () CURTIME () 16:25:46 2008-12-29 16:25:46 Example 2 The following SQL statement creates an "O

Linux Study Notes 1, linux Study Notes Since my big Microsoft finally put it down, I decided to give the open-source community a late hug. The fans who have followed me for many years suddenly got the favor of the goddess. They were all lost, crying, and excited, singing in succession: "After waiting for a long time, I finally waited until today, and after a long dream, I finally realized my dream ......" A

In-depth study of the two-way Data Binding Mechanism in AngularJS, and in-depth study of angularjs Angular JS (Angular. JS) is a set of frameworks, templates, and data binding and rich UI components used to develop web pages. It supports the entire development process and provides a web application architecture without manual DOM operations. AngularJS is very small and only 60 kb. It is compatible with main

[Study Notes] [C Language] Two-dimensional array, two-dimensional array of Study Notes1. What is a two-dimensional array? An array can represent the age of a class. What if I want to represent many classes? What is a two-dimensional array? Int ages [3] [10]; three classes, each with 10 employees Equivalent to 3 rows and 10 columns It is equivalent to three one-dimensional arrays. A two-dimensional array is

PyQt mining mine Game Study Notes (1), pyqt Study Notes Want to learn PyQt. Start with the analysis and learning programming example according to the usual practice. I found a source code for "mining mines" from the Internet, unloaded eight blocks, and analyzed them carefully to learn something. There are bugs in the original program. For example, there is no bottom line in the "checker". After all mines ar

[Study Notes] [C Language] function, Study Notes C Language1. What is a function? Any C language program is composed of one or more program segments (applets), each of which has its own functions. We generally call these segments "functions ". Therefore, you can say that the C language program is composed of functions. For example, if you write an MP3 player program in C language, the program structure is s