Author Archives: techno
How to create calculator via JavaScript
This is very basic implementation of calculator using HTML and JavaScript which will only have the division, multiplication, addition, and subtraction operators but you can easily add on more functions… Read more
Technorati Claim Token
Please follow the following steps to verify your blog on Technorati: 1. Make a new post (This is just a temporary post for claim). 2. Paste your claim token on… Read more
Create mixed graphs – Perl GD
You can create a mixed type graph that can have any combination of lines, bars, points, area and linespoints. In this tutorial i will explain how to make graph that… Read more
Rearrange columns of a data frame – R
Here i will explain how can we rearrange the columns of a data frame and also how can we rename columns. I will use the data frame that i used… Read more
Add columns in a data frame – R
If you have a data frame and you wish to add a column then here is how you should do it: Lets say your data frame is > data date_… Read more
How to loop through checkboxes and radio button – JavaScript
Lets say this is my HTML form: <form name="thisForm"><strong> Programming Langauge</strong>:<p> <input type="checkbox" value="PHP" CHECKED>PHP<p> <input type="checkbox" value="Perl">Perl<p> <input type="checkbox" value="Splus">Splus<p> <hr> <strong>Choclates</strong>:<p> <input type="radio" value="Snickers" name="candy" CHECKED>Snickers<p> <input type="radio"… Read more
Block friends from tagging you on Facebook
Facebook does not have any settings which could prevent some one from tagging you in photo, But you can customize your privacy settings to control who can see the photos… Read more
10 Ways to Increase Hard Disk Life and Performance
Performance of hard disk has always been an underrrated aspects of the overall system performance. The hard disk were considered only as a place to store and people paid heed… Read more
Facebook’s new security features
Facebook, with over 500-million members, has added the ability for users to login and surf the site using a more secure encrypted connection, known as HTTPS. The encryption is the… Read more
Create horizontal bar graphs – Perl
Here i am using GD Graphs in Perl to make Horizontal bar graphs. The process is same as you make regular bar graphs but in this case you use GD::Graph::hbars…. Read more
