The artifact for writing crawlers-Groovy + Jsoup + Sublime

Wrote a lot of reptile applet, the previous several times mainly with C # + Html Agility Pack to complete the work. Because the. NET FCL provides only "bottom-level" HttpWebRequest and "middle" WebClient, there is a lot of code to be written about

Summary of performance optimization for Web front-end pages

PS: Combining the ideas of the elite and some of their own small summary ~The most significant impact on user access is the front-end page. The Division of the website is generally two: front end and backstage. We can understand the background is

A simple solution to how to control the AJAX read data of a page read only once!

For example: A page has a button, click the time with Ajax to get the data in the background, to obtain a successful return. Don't get the data the next time you click.There are many ways to solve this problem:1. Use the Get method to read the data

Hibernate Level Two cache

Hibernate Cache• Cache: A very general concept in the computer field. It is between an application and a persistent data storage source, such as a file on a hard disk or a database, to reduce the frequency with which the application directly reads

js-variables, scopes, and memory issues, reference types

variables, scopes, and memory issues1. Variables may contain values for two different data types; primitive type values and reference type values; Reference type values hold objects in memory2, the object is passed by value,function SetName (obj)

jquery (Ajax)

Ajax is all called: "Asynchronous JavaScript and XML" (Asynchronous JavaScript and XML), which is not a single technique for JavaScript, but rather a series of interactive Web application-related technologies that shapeinto a binding body. With Ajax,

Problems with HTML wrapping

Sometimes the text is more than the area, but the text is not wrapped automatically.You can use forced line breaksForce no line break div{white-space:nowrap;} Automatic line div{word-wrap:break-word; word-break:normal;} Force English words to break

Graphic using HTML5 popstate How to play the browser history

What is popstate used for?In short, HTML5 's new API to control browser history.Second, how to manipulate the browser history in the past?The Window.history object, which contains two values of length and state, inherits several function functions,

Introduction and examples of CSS3 descendant selectors and sibling selectors

The CSS Selector Level 3 specification defines some connection selectors (or combination selectors) related to the document hierarchy.Divided into descendant selectors (descendant Combinator/child combinators) and sibling selectors (Sibling

CSS implementation picture vertically horizontally centered code instance in Div

CSS implementation picture vertically horizontally centered code example in div:The need to vertically center a picture in an element is still a lot of practical applications, and here's a code example to show you how to do this.The code example is

PHP Simple Delete-and-modify (CRUD) operations on XML

If you have the following XML file:> 55.8 56 40 339 How do I use PHP to crud it? The fact that simple XML files like this use SimpleXML is just as good. You can manipulate it like this:prefertime", " playervalue"

CSS infrastructure markup forms, etc.

1. What is structured markingUpgrade the div used by the layout, depending on the area of the page and the different tags provided. The effect is almost identical to the DivDesigned to build the structure of the website2. Detailed structure marking1.

PHP Only variables can is passed by reference

Recently done the project, found an error only variables can is passed by reference, meaning "only variables can be ' referenced '"is to use a method in the code, the parameter value of this method is referenced by the end method such as PHPThe

Summary of jquery utility functions

One, array and object manipulation1. $.each--traversal $.each (Obj,function (PARAM1,PARAM2))When iterating through an array: param1 is the element ordinal and param2 is the element content;When traversing an object: Param1 is the element

PS-Cut HTML (PS+DIV+CSS)

Today's tutorial, teach you how to use the PSD page DIV+CSS cut into HTML pages, this kind of tutorial, the site has been very few, mostly speaking of some of the more fragmented things, in the future, we will slowly publish more such tutorials for

JS Custom Object

Defining objects: Java: Defining objects using Class JS: Defining objects using a function One: Java-like constructor with parameters//define object function person (name,age) {//define attribute thi   S.name = name;   This.age = age;  Define

JQuery Video Extend

HTML5 Video Expansion Plug-in can add logo Add tag How to use:Download: jquery-video-extend"js/jquery-2.1.4.min.js">script>script src="js/jquery.video-extend.js">script>$ (document). Bind ( ' ready ' , function ()

PHP Installation compile time Configure:error:Cannot find OpenSSL ' s <evp.h>

===============================================Yum Install error:protected multilib versions error===============================================sudo yum downgrade OpenSSL downgradesudo yum install Openssl-devel= = = Additional reference ============

CentOS 6.7 Compile and install PHP7

1. Configure the compilation environment firstYum Yum Upgrade Yum " Development Tools " Yum Install GCC gcc-c++ pcre* openssl* gd-devel* zlib-devel pcre-devel libxml2-devel curl-develDownload and install LibmcryptAddress:

BT9034: Only IE and Opera support the document properties of Htmlframeelement and Htmliframeelement

Standard referenceHtmlframeelement and htmliframeelement do not have the ' document ' attribute, as described in DOM-2.For more information about Htmlframeelement objects, refer to the contents of DOM-2 Interface htmlframeelement.For more

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