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  Remote form submission

Remote form submission is way of submitting HTML forms from local to a particular remote server. This is used by many advertisers, spammers or even hackers to submit bad data to other websites in order to get what they want. They can write some automation scripts to help them do spamming. How can people do remote form submission and how to prevent this kind of attacks? Since a website can be accessed by almost every one, so one can save a local copy of a HTML form of a website through File->S...

   PHP,Security,Remote form submission     2013-07-14 01:04:49

  Let browser prompt for storing password when doing AJAX login

In Web 2.0 era, more and more web applications are using AJAX to replace the traditional HTML form element to perform user login. This usually provides a better user experience than form submission. But it also brings a side effect to the end users. That is the browser will not prompt the user whether s/he wants to save the password so that s/he no needs to enter the username/password again when visiting the same site next time. Below is the code snippet which does the AJAX login.  <scri...

   AJAX,Browser,Login,Password     2015-06-04 10:02:46

  Why my Website Contact form is not converting enough traffic?

Contact forms are a very common part of any website and anybody can overlook them. Generally people try to choose it as their first solution but they do not realize that they are actually hurting the growth of their business. WordPress currently power more than 66 million websites but it would be good if your website is existing because of one of the most popular Content Management Systems of the world. Everyone starting from blogger to the person sitting next door use this tool for making their...

   website contact form tutorial     2014-11-17 05:04:03

  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 ...

   HTML,Spin,Submit,Form     2013-05-17 11:47:07

  Google will not hold press release in China next week

There is an invitation form spreading around the Chinese internet community which states that Google will hold press release at 1 PM on December 18 (Beijing time). On this press release, Google will announce its return to China and Google China CEO Jony will explain its strategies in China after return. But soon Google China public relation representative said this was a rumor. There is no plan for Google to hold press release next week in China. And there are some apparent suspicious parts ape...

   GOOGLE,CHINA,NEWS,RUMOR     2015-12-13 07:05:39

  SameSite attribute in cookie

Starting from Chrome 51, a new attribute SameSite has been introduced for browser cookie. This attribute is to prevent CSRF attack. Cookie is normally used to store data exchanged between client and server. It frequently stores user login information. If a malicious website can forge a HTTP request with the valid third party website cookie, it may be called a CSRF attack. For example, if a user logins to a bank website your-bank.com, the bank server responds a cookie: Set-Cookie:id=a3fWa; L...

   JAVASCRIPT,COOKIE,SAMESITE,CHROME,CSRF     2019-09-14 04:57:51

  php://input in PHP

When using xml-rpc, server side will get the data from client with php://input method instead of $_POST. Hence today we will discuss php://input. PHP official manual has below explanation to php://input: “php://input allows you to read raw POST data. It is a less memory intensive alternative to $HTTP_RAW_POST_DATA and does not need any special php.ini directives. php://input is not available with enctype=”multipart/form-data”. Here we und...

   php://input, IO, input     2013-02-25 20:43:00

  Name resolution order in JavaScript

To understand what value a variable has in JavaScript, we need to understand some concepts such as scope and name resolution order. JavaScript has two scopes; one is program level and the other one is function level. Unlike in C,C++ or Java, JavaScript has no block level scope. So a variable defined in a if block will still be available outside. For example, the below example: var foo = 1; function bar() { if (true) { var foo = 10; } alert(foo); } bar(); The alert will display 10 since the ...

   JavaScript,Scope,Name resolution     2013-07-10 01:29:28

  How Many C Programs Are There?

If I choose a size S, can you tell me how many valid C programs exist that are no larger than that size? I’m actually interested in the answer — it’ll help me make a point in a paper I’m writing. Shockingly, the Internet (or at least, the part of it that I looked at based on a few searches) does not provide a good answer. Let’s start with a few premises: Since it would be exceedingly difficult to construct the exact answer, we’re looking for a respe...

   C Progra,Number,Statistic,Calculation     2012-02-22 05:18:32

  Using an Image Submit Button within an HTML Web Page Form

If you're using an HTML form on your web site and would like to use an image submit button instead of the boring standard submit button, this HTML code is for you.In order for your form's input box and your image submit button to line up properly, you will need to place it within an HTML table. In addition, unless your image has a transparent background, you will need to set the table background color to the same color as the image background so that it will seamlessly b...

   Submit button,Image,Html     2011-10-02 12:17:01

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