SEARCH KEYWORD -- STRICT COMPARISON
Understand Virtual DOM
With the popularity of React, the internals and implementation of Virtual DOM has becoming top discussed topic in tech communities and interviews. This post will give an introduction of Virtual DOM and how to implement a simple Virtual DOM logic. How to understand Virtual DOM In early days, front end developers would update a webpage view based on the data status change(usually after making AJAX call). But it brings performance penalties when there is frequent update as it would cause page reflo...
JAVASCRIPT,DOM,VIRTUAL DOM 2019-12-07 23:43:04
Display GIF animation while submitting the web form
Internet appears everywhere in our life. Form as a data gathering component is the must have component in a web app. When the page is submitting data to the server, if it takes a relative long time for the backend server to process the data, then the client users will feel lost while waiting for this if he cannot get any indication about what's happening. They may even reclick the button which will cause the data resubmission. This affects the user experience and also the system performance and ...
Backend-as-a-service?
As the list of *-as-a-service’s continues to grow, I thought I’d throw one into the mix. What about the idea of a backend-as-a-service (BaaS)? The recent surge of client side Javascript frameworks along with the attractiveness of simple RESTful APIs has created an environment where server-side interaction can be reduced to simply database interaction (including validation and some computation). But why stop there? What if the server-side of the equation was simply a RESTful, ...
Web design,Backend,Service,BaaS,Client JavaScript 2011-12-29 09:07:38
mysql_fetch_array(),mysql_fetch_assoc() and mysql_fetch_row()
In PHP MySQL mannual. There are three functions which need to be clarified for some users who may get confused when choosing which one to use to get the result. mysql_fetch_array() : by seeting the different parameters, there are three ways to return the result set. MYSQL_ASSOC(Result set with field names as the associative indexs.It means you can use the field name as the index to get value of the specified cell). MYSQL_NUM(Result set with field names as the number indices). Or MYSQL_BOTH(...
PHP,MySQL,resultset,comparison,mysql_fet 2011-08-05 04:53:09
ECMAScript 5 Objects and Properties
ECMAScript 5 is on its way. Rising from the ashes of ECMAScript 4, which got scaled way back and became ECMAScript 3.1, which was then re-named ECMAScript 5 (more details)- comes a new layer of functionality built on top of our lovable ECMAScript 3. Update: I've posted more details on ECMAScript 5 Strict Mode, JSON, and More. There are a few new APIs included in the specification but the most interesting functionality comes into play in the Object/Property code. This new code gives you th...
ECMAScript,Object,Property 2012-01-29 04:38:50
AOL is the biggest winner of Internet Stocks in 2012
At the beginning of 2012, not many people would think that the best Internet stock is AOL(American Online) in 2012. But now there are only four trading days left in 2012, AOL leads the mainstream technology companies with a 99.8% increase in its share price and firmly sits on the throne of the Year Internet Stock. AllthingsD chooses ten technology companies and their stock market performance in 2012 to do a comparison and gets the above figure. AOL has a 99.8% increase in share price which is a...
AOL,Stock market 2012-12-27 11:29:17
Why 0.1+0.2 != 0.3
In programming languages such as JavaScript, c/c++, Java and Matlab, you will find that you will get unexpected result when doing float point calculation. For example, when calculating 0.1 + 0.1, you will not get 0.3: > 0.1 + 0.2 == 0.3 false > 0.1 + 0.2 0.30000000000000004 Don't be surprised of this result, this is the end result of IEEE 754 standard, float point number cannot be accurately represented according to IEEE 754 because: No enough memory is allocated for representing the num...
float point,comparison,JavaScript 2014-11-19 05:32:46
Writing great JavaScript
I probably could have named this post something like “Writing clean, validating and portable JavaScriptâ€, but that would be no where near as catchy. The problem with “great†is it means different things to different people. I am going to show you my idea of great which may differ from many developers views, but I hope it helps someone improve their code. So what’s the point in this, why can’t you just carry on writing JavaScript as you have been for a...
JavaScript,Great,Clean,Tips 2012-03-24 05:18:12
Apple unveils iPad Mini
Apple unveiled iPad family's new product -- iPad Mini, it means that Apple gets into 7 inch tablet PC market now formally. iPad mini, has a 1024*768 resolution 7.9-inch screen, It has the same resolution as iPad 2. As a low-end product of iPad family, iPad mini still retains the front and rear camera, a dual-core A5 processor, battery life time is 10 hours. Apple said that the iPad mini battery is the thinnest and biggest in iPad family. Previously the media said the smallest storage space of iP...
JavaScript to open link in new window without being popup blocked
To ensure security and reduce spamming, modern browsers have implemented very strict rules on when a new window can be opened in a web page. Currently browsers restrict that any new web page to be opened in a new window must be initiated with an user action. The action is usually an user click event. Otherwise, a popup blocker would show on the browser address bar which indicates that something is blocked. To workaround this issue, normally you should implement the window open logic in a click e...
JAVASCRIPT,IFRAME,NEW WINDOW,OPEN LINK 2018-09-22 04:29:30
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