Skip to main content

YUI Compressors

Easy things first! As you know, I have a back log of posts that I have to dump out of my brain into this blog. I will start with the easiest.

YUI Compressor. This is a freeware from YUI. I was looking at the MultiThreading in JS post in infoq.com and found that this Concurrent.Thread.js is around 500KB. Which is quite big for a js file. And imagine the poor vistor of my site from Bugaria on a dialup with 56 Kbps line, This page is as good as a download! So, What can be done? 1. Compress the JS, 2. Then Gzip the data transfer. Well The second option might not be in *your* hands as a developer, the first is always your decision.

Using YUI is absolutely easy. Download the jar file and run
java -jar yuicompressor.jar myjsfile.js

And you got a compressed and obfuscated file (would you not want this! The users can no longer steal your js code!). You can also do this to your CSS files. There are other compressors like dojo, JsMin but this one beats them all.

Popular posts from this blog

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,

MySql Copying Table Structures.

Some times you need to copy only table structures across databases. This article describes two ways of doing it. If the whole database schema need to be exported, mysqldump is very effective. A --nodata flag will dump all tables' schema. Like this. mysqldump --nodata -p -u username databaseName But if you want to copy a specific table, individually, you could use "create table like" feature. You could create it even from a different database. However it must be on the same mysqld instance. Like this. create table newtable like oldtable; --Or from a table in other database create table mytable like otherdatabase.tablename;

Add jquery in Chrome console

Many a time, a page you are debugging doesnot have jquery. This simple js will add(or prompt you to overwrite) jquery to any page from chrome console. javascript:if(!window.jQuery||confirm('Overwrite\x20current\x20version?\x20v'+jQuery.fn.jquery))(function(d,s){s=d.createElement('script');s.src='https://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.js';(d.head||d.documentElement).appendChild(s)})(document);