Web Develop

The usability of the site (avaliability) describes the features that the site can effectively access.1, the Site usability Measurement and assessmentWeb site unavailable time (failure time) = point in time of failure repair-fault Discovery (report)

Have time to see other people's web page more beautiful, want to give Mr Skinner down, learn to learn. Share one of my favorite sites Mr Skinner commands wgetThis command can be used to download the entire station recursively, and the links in the

1. Background2. Why abandoned permanent generation (PermGen)3. In-depth understanding of meta-space (Metaspace)4. Summary======== Text Split Line =====First, the background 1.1 permanent generation (PermGen) where?According to this, the hotspot JVM

First, IntroductionA process is a run-time activity of a program with independent functionality about a data collection. In other words, when the system is scheduling multiple CPUs, a basic unit of the program. The process is not an unfamiliar

1. It is quicker to use single quotes instead of double quotes to contain strings. Because PHP searches for a variable in a string surrounded by double quotes, the single quotation mark does not2, if the method of the class can be defined as static,

Today suddenly encountered a problem, in the use of JS splicing string generation node encountered in double quotation marks nested single quotation marks, when writing JS did not care, just look at the grammar right also did not care, the results

The substring method is used to extract the character of a string intermediary between two specified subscriptsSUBSTRING (start,end)Start and end position, zero-based indexParameter descriptionStart Required. A nonnegative integer that specifies the

The major search engines for image recognition technology more and more mature, but still did not reach the point of 100% to identify the picture content. Picture optimization in the website need a complete solution, below I take Taiyuan Decoration

Hessian:hessian is a lightweight remoting onhttp tool that provides RMI functionality in a simple way, simpler and faster than Webservice,hessian.The use of the binary RPC protocol, because the use of binary protocol, it is very suitable for sending

When drawing a chart, multiple data backgrounds do not specify a color, so the foreground needs to use a random color, to record a small method:function Randomcolor () { var arr = [' A ', ' B ', ' C ', ' d ', ' e ', ' f ', ' 0 ', ' 1 ', ' 2 ', ' 3

YourberNaming is a very difficult thing, Microsoft this time to make a distinction with asp.net4.6, using the new naming method, ASP. NET Core 1.0, it is a new framework.ASP. NET has been a very good "brand" for the past 15 years. ASP. NET 4.6 is

Reference two JS files: Jquery.js and Jquery.qrcode.min.jsAddress Link: http://pan.baidu.com/s/1qYPkG24JSP page Processing:(1) Set a div for storing two-dimensional code images:(2) Adding content when the page is initialized$ (function () {$ ('. Ewm

jquery can greatly simplify the writing of JavaScript programs.To use jquery, first add a reference to the jquery library in front of the HTML code, such as:Library files can be placed on-premises, or directly use the CDN of a well-known company,

Ngkeydown/ngkeypress/ngkeyupThe instruction executes the specified expression when the key press/Key Press/Key is released.Ngkeydown and ngkeypress slightly different, the current test is ngkeypress for the system button is not valid, and Ngkeydown

Http://blog.csdn.net/huangwenyi1010/article/details/51637427#comments1. First you can go to the official website Ueditor, see the detailed documentation, including how to install to eclipse, related jar package and how to use Ueditor, this article

http://blog.csdn.net/chaofanwei/article/details/27168603Website performance is an objective indicator, can concretely reflect the response time, throughput, concurrency number, performance counters and other technical indicators.1. Performance Test

The use of the AJAX request $.ajax methodUsing jquery's $.ajax method, you can control AJAX requests in more detail. It imposes a fine-grained level of control on the AJAX request.$.ajax method Syntax $.ajax (Options)

Since each of the previous issues is a relatively large knowledge point, the author hopes to be as far as possible one by one detailed answers, if there are insufficient places to welcome you to add and modify, while learning from the cow people

1. first, We define a servlet named getconfigservlet, the real project should be a controller, the same class is loaded back-end configuration file classPackage Com.ay.servlet;import Java.io.ioexception;import Javax.servlet.servletexception;import

var gm = require (' GM ');var ImageMagick = Gm.subclass ({imagemagick:true});var path = require (' path ');var fs= require (' FS ');varImgdir = path.join (process.cwd () + '/public/img '); varResize =function(file) {imageMagick (file). Resize (750, 4