pmbok basics

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JavaScript is a scripting language that requires a host file, and his host file is an HTML file.Not directly related to JavaGenerally written in1.head inside2.body inside3.Generally written in Common dialog boxesAlert ("alert Box") pops up a warning dialog box;Confirm ("") pops up a dialog box to choose fromClick "OK" to output ture;Click "Cancel" to output flase;Prompt ("Hint word", "can delete prompt word");Basics of JavaScript

. List method#1. Append: Add new objects at the end of the listlst=[1,2,3]Lst.append (4)Print LST#2. Count counts the number of occurrences of an elementa=[' to ', ' to ', ' a ', ' B ', ' to ', ' C '].count (' to ')Print a#3. Extend add multiple values at the end of the list, which differs from the connectiona=[1,2,3]b=[4,5,6]A.extend (b)Print a#4. Index to find the first index position of a valueK=[' A ', ' B ', ' C ', ' d ']Print K.index (' C ')#5. Insert inserts an object into the listll=[1,2

than memory. For example, if the CPU is able to make 10 requests to memory in a second, memory can only return 11 requests. What about this time? The CPU resources are not wasted. So this time we have the CPU's first-level cache and the level two cache. Buffering in the CPU and memory. The CPU cache is much faster than the memory block but slower than the CPU. But this has greatly alleviated the problem of too slow memory. If we want the CPU cache to work, we need our local rules. Local laws ha

and after expressions, whereas logic or or means that there is a truth in or around the whole, and the function of logical non-not is that if the value of the expression behind it is true, The result is false, and The result is true if the expression that is behind the not evaluates to False.>>> A = true>>> B = false>>> A and bfalse>>> a or btrue>>>not afalse>>Gt A and (not B) TrueThis article is from the "Python Training Zhipu Education" blog, so be sure to keep this source http://jeapedu.b

deffunc ():7 Print("The program starts independently as a script and is not used as a module")8 9 if __name__=='__main__':TenFunc ()#Run function funcV. The Zen of PythonEnter import this in the Python interactive environment, and enter to see the Python Zen summarized by Tim Peters1 Import This2 3 #The Zen of Python:4 the Zen of Python, by Tim Peters5 6Beautiful isbetter than ugly.7Explicit isbetter than implicit.8Simple isbetter than complex.9Complex isbetter than complicated.TenFlat

. Operators:1) Arithmetic operator: +-*/% * *//2) Assignment operator = + = = *=/=%=3) Comparison operators > 4) logical operators and or not: 0 or false in logical operations, usually used in judgment statements, such as if, while statements5) member operation in, not in6) Identity operation is, is not7. Statement:1) Order: The code runs in the order of one line after the other2) Branch:Two choice one: If:...else: ....Multiple choice one: If:.....elif.....elif.......else ...3) Cycle:For: Used t

Transfer Protocol over secure Socket layer is a security-targeted HTTP channel, which is simply the secure version of HTTP, which is the SSL layer under HTTP, referred to as HTTPS. The security base for HTTPS is SSL, so the content he transmits is SSL-encrypted, and its main role is: Establish an information security channel to ensure the security of data transmission Confirm the authenticity of the website, all use of HTTPS site, you can click on the browser address bar lock logo

connection with the client to the corresponding breakclient.close () #. The problem point of simple FTP making Json.decoder.JSONDecodeError:Extra Data:JSON cannot be decode because there is binary data in the process of transmission.How do I return the transfer file when it is completed?The client will receive a round. And in the transfer list, the first item is the flag, the second item is true, when the two items do not match, the prompt is incorrect, and the list of options is

TypeName the template of the template template for the template member template template, the argument matches This article continues to delve into the basics of templates, covers content as follows: Another use of Keyword TypeName defines member functions and nested classes as template parameters for template templates (template template parameters) TypeName In the process of standardizing C + + , keyword TypeName is introduced to illustrate that i

Basic introductory Technical discussion group, grow together!This article copyright for the public Share talent show (Shareexpert)--Xin 鱻 all, if necessary reprint please contact the author authorized, hereby declare!Past period Summary share:Android 0 Basics Introduction 1th: Android's past lifeAndroid 0 Basics Section 2nd: Android system Architecture and application components those thingsAndroid 0

WPF flowchart generation basics 1: wpf flowchart BasicsThe basic requirement for creating a WPF flowchart is to use the wpf development flowchart, which allows you to manually drag the configuration. If you have used a flow chart, you should be able to imagine the flow chart dragging configuration. Here, we will focus on the technical knowledge of wpf drag. But in fact, wpf drag has several different implementation methods. One is to move the process

Javascript amp; DHTML instance programming (Tutorial) DOM basics and basic APIs 1. What is DOM? What is DOM? DOM is a Document Object Model (Document Object Model), a set of API Interfaces Based on browser programming (in this tutorial, it can be said that it is DHTML programming). W3C introduces the Recommendation Standard, each browser has some subtle differences, with Mozilla's browser closest to the standard. Javascript alone must be combined wit

I/O operation basics in. NET and. netio operation BasicsIO Introduction For IO operations in. NET, you often need to call several classes.1.FileStream class File stream class, responsible for copying, reading and writing large files. 2.Path class The methods in the Path class are basically string (File Name) operations, which have little to do with the actual file. 3.File class The File class can be used to copy and cut small files and read som

[WCF programming] 3. WCF basics, wcf programming 3. wcf BasicsI. Service A service is a set of public functions. The service contains concepts such as language, technology, version, and framework. Only the specified communication mode is allowed for interactions between services. External clients do not know the implementation details of the service. Therefore, the WCF Service usually describes available functions and possible communication modes of t

Bash Basics About commands and command types Use the hash table for the command Bash to accelerate the next search. To add a frequently used command, use the hash cmdBash executes commands with the same name in the path in the following sequence: built-in commands of the alias keywords function executable files or scriptsWhen executing a command entered by a user, Bash must first determine the type of the command. You can use type cmd to check wheth

01. Android basics and 01android Basics1.1. Classic Structure Btn_button = (Button) findViewById (R. id. btn_button); btn_button.setOnClickListener (new OnClickListener () {@ Override public void onClick (View v) {Toast. makeText (MainActivity. this, "the button is clicked", Toast. LENGTH_SHORT ). show ();}}); 2. Internal class as listener Class MyClickListener implements OnClickListener {@ Override public void onClick (View v) {Toast. makeText (MainA

IOS network basics and ios network BasicsComplete process of an HTTP request based on the iOS Network Browser/application requests (requests include HTTP requests (GET, POST), address URLs, protocols (HTTP/1.1), request headers, and additional information) --> Web server processing (page: Static html page, dynamic php/asp/jsp page) --> Browser/Application Difference between GET and POST: Both HTTP request methods GET: GET data only. All parameters are

Data Structure BASICS (3): Data Structure BasicsPermutation) Sorting Problem: Set R = {r1, r2 ,..., rn} is the n elements to be arranged, Ri = R-{ri}; the full arrangement of elements in set X is recorded as Permutation (X), (ri) Permutation (X) the prefix ri is added before each Permutation of Permutation (X) in the Full Permutation. The full arrangement of R can be summarized and defined as follows: When n = 1, Permutation (R) = {r}, r is the unique

Linux ECs: linux operation basics and linux ECs Basics1. Shell Shell is the user interface of the system. The shell interpreter converts commands into system function calls and transfers them to the kernel for completion. If it is an external command or utility, then try to find the directory in the hard disk and transfer it to the memory, then interpret it as a system function call and transfer it to the kernel for execution.2. Linux directory struct