Skip to main content

Javascript: Convert Strings to Binary (and representing in a nerdy way!)


I follow those GoogleDevelopers Videos. Sometime back, in one of the presentations on GoogleIO, there was this interesting string of dots at the bottom of each page of the presentation. They looked like random big and small dots. A similar bunch of dots were also on the T-shirt of a presenter was wearing in another presentation. While it seemed something in the pattern, I could not find what it was. Finally, another presenter cleared the matter that those dots are just binary representation of "GOOGLEIO" (So much for advertizing Google IO, Impressive!).

So I wanna do it. Takes me back to days of those DSP classes at school. Nerdy me had to churn some old brain cells. I remember those first programming language classes in Pascal and C when you were asked to do fibonacci series and converting a binary string to ascii codes. That *experience* came handy here: Check it out!

Text to Binarize:

For those who came to copy the javascript code to convert string to binary, Here it is:
function toBin(str){
 var st,i,j,d;
 var arr = [];
 var len = str.length;
 for (i = 1; i<=len; i++){
                //reverse so its like a stack
  d = str.charCodeAt(len-i);
  for (j = 0; j < 8; j++) {
   arr.push(d%2);
   d = Math.floor(d/2);
  }
 }
        //reverse all bits again.
 return arr.reverse().join("");
}

Popular posts from this blog

Appcache manifest file issues/caveats

Application cache (appcache) is a powerful feature in HTML5. However, it does come with baggage. Many (see links below) advocated ferociously against it due to tricky issues it comes with. For someone who is just testing waters, these issues may throw them off grid. Knowing them before hand helps reduce some unpredictable effects.

Being a Vegetarian

I am a Proud Vegetarian. I don't eat Meat or Eggs. People say its hard here in US to be one. I beg to differ. The mere fact that I am hail and healthy these 4 years is a definitive proof. Apart from being bullied and trash talked by The Meat-Eaters, There is really nothing that makes this choice of mine any more than a debatable issue at a lunch or dinner. Other things aside, I am writing this blog having watched a PETA Video. Before you click on the play button, I ask you - If you are a vegetarian : Dont watch it. If you are not : Dare to watch it till the end. If you think going veg is just a fashion, think again . Even if you just want to do it for Fashion . Do it. Go Vegetarian. And Feel better asking the waiter for a Vegetarian Entrée in your next lunch.

classpath*: making your Modular Spring Resources

Spring gives multiple options to load XML resources for building contexts. the reference documentation does explain this feature quite well. However, I am taking my shot at explaining the different practical scenarios ( by order of growing modularisation) For Example, A simplest Spring based web Context Loader can be configured with resources like this <context-param> <param-name>contextConfigLocation</param-name> <param-value>applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> You just need to put applicationContext.xml in WEB-INF/ folder of your webapp. However, Typically an application is n-tiered. You can also have multiple files setup and in relative paths. like <param-value> context-files/applicationContext.xml context-files/dao.xml context-files/service.xml </param-value>