Web Develop

April Dig yourself a reptile series of pits, mainly related to HTTP protocol, regular expression, crawler frame scrapy, message queue, database and other content. The basic principle of the crawler is to simulate the browser to make HTTP

HTML: Hypertext Markup Language (hypertext Markup Language), not a programming language, is a markup language HTML element: paragraph html tag: paragraph HTML declaration: is not a label html5:html4.0.1 strict:html 4.01 transitional:html 4.01

1. Before AjaxAt the beginning, the browser initiates the request as follows:The user enters the URL/a label/img label, etc.--the server returns HTML/CSS/JS--and reloads the page after the user receives it.The above request initiation method either

Thinkphp/library/think the new file: Csv.class.PHPphpnamespace Think;classcsv{//Export CSV file Public functionPut_csv ($list,$title){ $file _name= "CSV".Date("Mdhis", Time()).". csv; Header(' Content-type:application/vnd.ms-excel ' ); Header('

Reprint statement: http://www.cnblogs.com/xdp-gacl/p/4097608.htmlUnzip the Tomcat Server archive packageConfiguring Environment variablesThe tomcat server runtime requires JDK support, so you must configure the environment variables used by the

1. Keep in mind the following rules, but it is not recommended to use hack.All browsers are universal (IE6IE7FF used mainly in the market) height:100px;IE6 Special _height:100px;IE6 Special *height:100px;IE7 Special *+height:100px;IE7, FF common use

1. Single-case modeAs the name implies, a singleton pattern defines an object that can have only one instance, which is equivalent to giving control of the class to a single point.Requirements:A.private constructor, so that the class can not be

Demand: (Django) uses XMLHttpRequest and jquery to implement AJAX addition operations url.py: from Import URL from Import = [ url (r'add/', Views.add, name='add ' ), URL (r'add_number/', Views.add_number, name='

Reprinted articles, written very well.First, an overview of the Netty, to see what netty are all components?To better understand and further deepen the netty, let's take a general look at the components used by Netty and how they work together

In this IT market is the wind and water changes, are also the market supply and demand to set, the iOS fire of a mess, and now also appear to find work, the floor of the door, I belong to one, in a forced by the circumstances, began to do. NET, I

First, title:Arithmetic (web version)Second, the procedure design thought1, the use of HTML statements and CSS tags, design arithmetic home page, and the required parameter value input.2, in the topic page to get the parameter values, using JavaBean,

Basic usage (with Sed/awk/grep)Print output to standard output (STDOUT) by default$curl http://www.baidu.comDownload Save:Save the downloaded file to the specified file with the-o/-o option:-O: Save the file as the file name specified on the command

Narrator: How do I getshell in a scenario with a WAF and an into outfile in MySQL?Tilt rotationEmail:[email protected]Submission Contact: [Email protected]The first environment is as follows: Os:windows 2003 Waf:safe Dog 4.0 Official

CentOS installation is simpleYum Install Epel-releaseYum Install CronologThen configure the virtual host[[email protected] ~]# vim/opt/app/apache/conf/extra/httpd-vhosts.conf (Virtual host profile)##ServerAdmin sadoc.blog.51cto.comDocumentRoot "/var/

First, soil sensorsSensor Four pins: Stitch Meaning AO Analog signal output Do Digital signal output GND Power supply Negative Vcc Power supply

The assignment/transfer of JS pairs of values and references is syntactically indistinguishable, completely based on the worthwhile typeSimple Values (that is, scalar primitive type values), which are always assigned value/pass by value copy,

What is JSON?JavaScript Object Notation (JAvaScript Object Notation). JSON is a lightweight data interchange format in which a JSON-formatted file can grow like this: 1234 {  "name": "hanzichi",  "sex": "male"} It

We will often involve in the development of the verification Code, the front-end verification code needs to use the HTML5 in the knowledge of the canvas, and then the combination of JS to control the verification of the number can achieve the effect

①Title label    ~ corresponding font size, the number is small to large corresponding font from big to smallIiparagraph    Each label corresponds to a paragraph, and a page is displayed with a tag and a blank lineThe attributes of the paragraph

1, use the method of the object to insert the data D usage. $Form= D (' Form ');$data[' title '] = ' thinkphp ';$data[' content '] = ' form contents ';$Form->add ($datain fact, thinkphp also supports objects by inserting data directly into the