I'm trying to enter a javascript competition where the script has to be <= 1kb in size. Minifying and eval is allowed, so I've run it through google's closure compiler (which does slightly better than any others I've tried).
But I've found that if I convert the script to a string, and replace long words like 'function' and 'return' with single chars, I can reduce that even further. Then, by embedding the string in my script, performing the substitution to restore it, and then 'evaling' it, I can get the original behaviour.
So I was wondering if I could generalise this last method. Has anyone seen or written code to compress/decompress strings in this way? Feel like thinking about it?
EDIT To make myslelf clear, I'm asking about compressing and decompressing strings in javascript - not minifying. Eg how to find the most common patterns in a string, and how to write a tiny decompressor in javascript for strings where these occurences have been replaced with single chars.
Thanks.
Do you happen to be looking for http://www.iteral.com/jscrush/ ? I found it useful for the same competition (I assume it is js1k).
Have you considered shortening your code by creating a shortcut for those JavaScript objects and methods that you use a lot in your code:
var d = document; var id = d.getElementById;
And then instead of writing
document.getElementById("foo")
You can write
id("foo");
标记化是压缩脚本的首选方法,因为它与各个关键字和其他名称一起使用。
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