JS function concept

The concept of a function1) basic concepts and ways to create functionsCreate: Create a code block with the function keyword function Zxw (a) { console.log (a);}Functions are followed by the name of the function, the parentheses are

Web server Security

Apache Close DirectoryConfiguration files: Installation directory/apache/conf/httpd.conf #默认就会把/directory burst out; Close method: Options-indexes followsymlinks (-Indexes indicates opposite) +indexes +followsymlinks +execcgi # or

Using Nlog in. NET Core

Available in. NET Standard 2.0.3 and. NET Core 2.1. Other versions of. NET should also be available.1. Create a new blank solution and build a class library2. Installing Nlog.config, a configuration file is generated Nlog.config3. Copy the code of

Apache Basic Deployment

Operating mode 1, Prefork MPMPrefork MPM implements a non-threaded, pre-derived Web server. At the beginning of Apache startup, it pre-derives some child processes and waits for connections, reducing the overhead of frequent creation and destruction

CENTOS7 node Express project to upgrade HTTP interface to HTTPS interface workaround

1, put the corresponding SSL certificate in the project file (I installed the image is Oneinstack, the creation of the project can be directly selected to generate the SSL certificate of the project, that is, Xxx.key and xxx.crt files);2, modify the

HTML tag Nesting rules

We know the JS code if there is a syntax error, the browser will refuse to execute and error. But! when the browser encounters an illegal HTML, it does not give an error , and it renders it in every possible way.The nesting rules for XHTML tags are:1

"JS" JS in the understanding of this

First, the cause analysis and understanding of thisFirst: this refers to the environment in which the function is running.Second: The JavaScript language has a this design that is related to the data structure in memory (memory storage details

Complex nested data type JSON format conversion (Geojsonpolygon) using Fastjson in network transport

If an object is too complex, the JSON-formatted data conversion in the network transfer key is prone to problems.For example, the following class of Area.javaImport Lombok. Allargsconstructor; Import Lombok. Data; Import Lombok. Noargsconstructor;

The use of System.Web.Optimization combined compression technology

The bundling and compression principle is that multiple CSS filesDynamic MergingAndCompressionAs a CSS file, multiple JS filesDynamic MergingAndCompressionFor a JS file, so that the browser to reduce the number of server resource file requests,

PHP builds projects using composer to reference third-party class libraries

Often see a variety of open source libraries recommend the use of composer installation code, but always can not understand how to use composer,These days quiet heart to learn the use of composer, found that this is really a good thing, first put on

2018-09-03 basic structure and operating mechanism of +servlet of Web Access

Java Core Programming Servlet:The servlet runs the Java applet on the server and is a dynamic resource that sun Company provides a set of specifications (interfaces) to handle client requests and respond to the browser! But the essence of the

Gulp Solution Requirejs

Read Catalogue First, Amendment 1: Ii. Amendment 2: Third, Revision 3: Read Catalogue Gulp resolving front-end cache issues for REQUIREJS projects (ii) Objective 2, modify the Require.js 3. Modify

JS String and number

NumberJS has only one numeric type (including integer, floating point type)Significant or minimal scientific notation available. (7.7123e+1)All JS digits are 64 bitsJS all the numbers are stored as floating point typeThe maximum number of decimal

Hibernate re-contact BASIC configuration continued

"show_sql">trueThis sentence is meant to show SQL statements"format_sql">trueFormat output SQL statementsAnnotate a property before the class is inconsistent with the table name@Table (name="_teacher")XML is the specified table propertyIf you don't

HTML Basics (i)

How do I access a webpage?The software that the user accesses the webpage is called the browser, compares the popular browser:IE Firefox Chrome Safari OperaWeb serverWhen a user requests a Web page in a browser, the request is sent over the internet

JSON date string format time

varstr = ‘/Date(1333245600000+0800)/‘;functiondata_string(str) {    vard = eval(‘new ‘ + str.substr(1, str.length - 2));    varar_date = [d.getFullYear(), d.getMonth() + 1, d.getDate()];    for(vari = 0; i     return

Dynamically modify Logback level levels through URL mode

ImportOrg.slf4j.Logger;Importorg.slf4j.LoggerFactory;ImportCh.qos.logback.classic.Level;ImportCh.qos.logback.classic.LoggerContext; Public classLoglevelcontroller{ Private Static FinalLogger log = Loggerfactory.getlogger

Vue's use of jquery in a webpack environment

1. Use the command line to install JQ, cnpm install jquery--save2, use the command line to install a plug-in Expose-loader webpack, used to load JQ:CNPM install Expose-loader--save3, add the configuration code in the Webpack configuration file:{

Web front-end attack mode and defensive measures

First, XSSCross Site script attackA malicious attacker inserts malicious script code into a Web page, and when the user browses to the page, the script code embedded inside the Web is executed to achieve the intent of the malicious attacker.1.

[Redis] The type org.apache.commons.pool2.impl.GenericObjectPoolConfig cannot be resolved. It is indirectly referenced from required. class files Error resolution method

When importing Redis-related projects, the following errors are often reported:The type org.apache.commons.pool2.impl.GenericObje1ctPoolConfig cannot be resolved. It is indirectly referenced from required. class filesAfter checking, the original is

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