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  Regular expression to get html meta description

When we need to process a HTML page source code, we often need to retrieve the meta description of the page besides the links in the page. This description is usually located in <meta> tag of a HTML page. The meta description is very useful for search engine index. How can we retrieve the meta description? If we use a regular expression, we can easily get the meta description. In JavaScript, the regular expression looks like : var pattern = /<meta.*?name="description".*?content="(.*?)"....

   Regular expression,meta description,HTML,JavaScript     2012-07-03 10:09:20

  Open Letter to sites with annoying interfaces

Remember those childhood games where you are given two nearly identical images and your objective was to find some number of subtle differences? Well, I shouldn't have to play that game when I'm using your damn website. I show here two examples of a common practice that is plaguing the modern web. First, a clipping from a project page on github.com.     And now the second image:     See the difference? My question is this: why? That edit button is the only component of...

   Web design,User interface,User friendly,Layout     2011-12-27 09:32:10

  Performance is a Feature

We've always put a heavy emphasis on performance at Stack Overflow and Stack Exchange. Not just because we're performance wonks (guilty!), but because we think speed is a competitive advantage. There's plenty of experimental data proving that the slower your website loads and displays, the less people will use it. [Google found that] the page with 10 results took 0.4 seconds to generate. The page with 30 results took 0.9 seconds. Half a second delay caused a 20% drop in traffic. Half a seco...

   Website,Perfomance,Optimization     2011-07-02 01:52:12

  iPhone 7 may come with following new features

There are all kinds of news that iPhone 7 will be released in the coming September. Now the news seems to be convincing. On 26 August, a Sina Weibo(China's Twitter) user @POPPUR posted an weibo which says that China Telecom, one of the largest telecom vendors in China, has opened the pre-order of iPhone 7. Along with this, a few new features of iPhone 7 are also released. On the photo uploaded, there are a few new features of iPhone 7 displayed. They are : Waterproof No headphone jack Wireless...

   NEW FEATURE,NEWS,IPHONE 7,CHINA TELECOM     2016-08-27 03:50:41

  Using OpenID connect in asp.net for login via Facebook

This post is shared by asp.net development India experts to explain OpenID support and OAuth providers support in asp.net. Through this article, you will learn the best way to use OpenId in asp.net development for login through different accounts including Facebook. Read this article and discover how experts of asp.net do it. Web pages of Asp.Net have support for OpenID and OAuth providers. These providers allow users to log in to the web application with their credentials from Microsoft, Google...

   ASP.NET ,DEVELOPMENT,INDIA     2016-11-07 05:09:58

  Build your own internet search engine - Part 2

After having started to build my own internet search engine as described in a previous blog post, I now have read some papers and books about web search engine architecture and information retrieval to complete my hobby project. Here is a list of papers and books that I highly recommend to anybody who is interested in this topic: 1. Google: data structures and algorithms by Petteri Huuhka 2. The Anatomy of a Large-Scale Hypertextual Web Search Engine by the Google founde...

   Search engine,Paper,Database,Data structure     2011-12-22 08:25:59

  Twitter service down incidents summary

This Thursday, Twitter encountered a global service down incident. This is the second service down incident since last month. Later Twitter updated its website and stated that users might not be able to access Twitter temporarily.Twitter admitted the service down incident and explained that this time's service down was caused by problems of their both data centers.Ok, now lets summarize the service down incidents encountered by Twitter in past few years.in May 2008, Twitter's new engineer team w...

   Twitter,Service down,History     2012-07-28 12:36:39

  Get hostname from a URL using JavaScript

Sometimes we may have strings which contain some UR;s and we may want to retrieve the hostname from the URLs for some statistic use. For example, we may have a URL : http://www.example.com/aboutus.html. We may want to retrieve the www.example.com from the URL. How? Use regular expression. Here I give an example using JavaScript. If you want to check whether a string is a URL or not. Refer to Detect URLs in a Block of Text. In JavaScript, we can have a regular expression like var pattern=/(.+:\/\...

   JavaScript,URL,regular expression, Hostname     2012-06-15 09:16:45

  An alternative way to parse URL in JavaScript

Normally when we need to process URL in JavaScript, we may use the location object. Then we can use location.hostname,location.href,location.port etc to get the information we need. In this post, we will parse an URL with an alternative way. We can use an URL to create a DOM object by calling document.createElement("a"). The complete code is: function parseURL(url) { var a = document.createElement('a'); a.href = url; return { source: url, protocol: a.protocol.replace(':',''), host: a.ho...

   URL,location,parse     2014-03-03 07:05:11

  Google will launch new rendering engine Blink

Google announced new rendering engine Blink derived from the open source WebKit on Chromium project's official blog. This is to speed up the innovation and development process. It will take some time for Chrome to switch from Webkit to Blink.Opera has just switched to WebKit, what will they think about Google's move? Opera's Bruce Lawson said in a blog that Opera browser would use Blink engine and contribute to Blink community.For Google, a powerful rendering engine means that Chrome OS ca...

   Google,Blink,,Webkit,Render engine     2013-04-04 04:11:23

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