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  5 Free Open Source Chat Applications For Developers

A chat application allows users to communicate with others via texting, messaging, video and audio conferencing. While developing a web application web masters always think that they should communicate with their audience directly rather than emails, phone or contact forms, or chat applications can be used in various web applications such as social networking sites, business sites for live support etc.We understand the needs of webmasters and that’s why we searched and explored myriad of Google’s pages to find out these 5 free open source chat applications, webmasters can us...

113,141 0       AJAX OPEN SOURCE WEB PR CHAT CHAT SYSTEM


  A mini guide to HTTP referer

In HTTP header, there is a field named Referer which is to provide the referrer of the current accessed page. In this post, we will introduce the usage of HTTP referer field.On the web, when a user visits a webpage, s/he must be from some place. This place is usually referred a s referer. This information is very important to some website operators and server owners as they want to know where they get the traffic from and this helps them provide better service for potential targeted users.In the request header of a HTTP request, there is a Referer filed which can be set to the referrer URL ind...

110,135 0       REFERRERPOLICY HTTP REFERER HTML


  Meta tag in HTML header

In server response, we can use response.setHeader() to set the meta information in header of a HTML page. The usage is response.setHeader(name,context);meta is used to simulate the response header of HTTP protocol in HTML page. It should be put between the <head> and </head> tag.1. <meta name="Generator" content="" > <!--This is to specify the tool which generates this page such as Microsoft FrontPage 4.0 etc -->2. <meta name="keywords" content=""> <!-- To tell the search engine what keywords your page contains -->3.<meta name="description" content="">...

58,320 0       HTML HTTP META HEAD


  Remove browse button from input type=file

In Web 2.0 era, many websites will ask the user to upload their avatar when creating their profile. In HTML, the input control we should use is input="file". This is a file control provided by the browser vendor and it should be ran in a sandbox for security consideration. Browsers don't provide ways to choose file from local and upload to the remote server without the input="file" control. There is one annoying part about the input="file", which is a default button named "Choose File" or "Browser" will always appear when this control is created. Sometimes, to keep consistent and provide ...

47,018 3       FILE HTML BROWSE REMOVE BROWSE BUTTON


  The danger of target=_blank and opener

When want to open a new page in a new tab on clicking a link on a page, the usual way of achieving this is to use target="_blank" property in a tag. However, the use of this leaves space for phishing website.Backgroundparent and openerBefore talking about the opener object, let's know a bit about parent object when using iframe. HTML provides a parent object which is used to communicate between the parent page and the embedded iframe element. This parent object can be accessed using window.parent. Similar to parent, opener can be used to access the window element of the page which op...

38,835 2       REL NOOPENER TARGET BLANK HTML REL NOREFERRER


  How to check whether a web page can be loaded in iframe

Sometimes you may want to load other website's page in your own website's iframe, but due to some security concerns, other website may have security configurations which prevent you from loading their pages into your iframe. In this case, if you try to load them, you would see a blank page or a text message telling that it's prohibited. Fortunately, you can detect this before you actually decide to load it.To prevent a page from being loaded by an iframe from other site, the response header sent to the browser will contain some options which denies the load. These response header opt...

34,043 2       IFRAME SECURITY X-FRAME-OPTIONS CONTENT-SECURITY-POLICY HTML HTTP


  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 stability.The solution to the above issue is we usually will disable the submit button or hide the s...

33,391 4       HTML FORM SPIN SUBMIT


  asp、php、asp.net、jsp介绍及优缺点比较

现在主流的网站开发语言无外乎asp、php、asp.net、jsp等。网页从开始简单的hmtl到复杂的服务语言，走过了10多个年头，各种技术层出不穷，单个的主流技术也在不断翻新的版本，现在分析下各种语言的区别、优势、劣势、...

30,815 0       WEB SERVER ASP ASP.NET JSP PHP CGI