subzey · July 28, 2011 13:30 · tsaniel · Jan 23, 2012
diff --git a/README.md b/README.md
diff --git a/annotated.js b/annotated.js
 function(
 	a, /* (DOM element) object */
 	b, /* (string | regexp) class name */
 	c, /* - placeholder */
 	d, /* - placeholder */
 	e  /* - placeholder */
 ){
 	/* For each class chunk: */
 	for (
 		/* First, create new RegExp: any amount of anything except whitespaces */
 		c = /\S+/g
 	;
 		/* then get className chunks from the className until exec() is exhausted and returns null */

 		/* Thanks to @tsaniel for getting rid of array and saving a lot of extra bytes! */

 		d = c.exec(a.className)
 	;
 		/* {{ empty counting expression }} */
 	)
 		d == (
 			/* If b is regexp ... */
 			/* (bypass: if b is undefined, TypeError is raised here) */
 			b.exec ? 
 				/* ... apply this regexp to class name chunk, */
 				/* test if is an array (not null), */
 				/* and get the 0th item (whole captured string) */

 				/* Thanks to @atk for great reduce and speed-up hint! */

 				(b.exec(d)||0)[0]
 				/* pass this string to comparsion. */
 			:
 				/* If b is not regexp, just pass it to comparsion as is */
 				b
 			)
 		/* So we have compared the class name chunk and a mask. If regexp is matched not fully, this comparsion will fail */
 		/* If string or regexp matches ... */
 		?
 			/* Do nothing, this class chunk must be removed */
 			0
 		:
 			/* Else we need to append it to the resulting string */
 			e = e ?	/* If e is "truthy", that is, not empty string and not undefined... */
 				/* append d to e */
 				e + ' ' + d
 			/* e is "" or undefined ? */
 			:
 				/* let just `e` be `d` */
 				d
 	;
 	/* {{ end of for loop }} */
 	/* Finally, assign a new value to className */
 	/* Assigning to property will trigger .toString() on array */
 	/* If `e` is undefined, `[e]` returns an empty string */
 	a.className = [e];
 }
diff --git a/index.js b/index.js
 function(a,b,c,d,e){for(c=/\S+/g;d=c.exec(a.className);)d==(b.exec?(b.exec(d)||0)[0]:b)?0:e=e?e+' '+d:d;a.className=[e]}
diff --git a/LICENSE.txt b/LICENSE.txt
            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2011 subzey <[email protected]>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.
diff --git a/package.json b/package.json
 {
  "name": "removeClassRegexp",

  "description": "Regular expression capable removeClass",

  "keywords": [
    "removeClass",
    "remove",
    "class",
    "regexp"
  ]
 }
diff --git a/test.html b/test.html
 <!DOCTYPE html> 
 <title>removeClass</title>
 <div>Expected value: <pre><b>foo bar foo-1 foo-bar 42</b><br /><b>bar baz foo-bar 42</b><br /><b>foo bar baz foo-1 foo-bar</b></pre></div>
 <div>Actual value: <pre><b id="ret"></b><br /><b id="ret2"></b><br /><b id="ret3"></b></pre></div>
 <script>
 var removeClass = function(a,b,c,d,e){for(c=/\S+/g;d=c.exec(a.className);)d==(b.exec?(b.exec(d)||0)[0]:b)?0:e=e?e+' '+d:d;a.className=[e]}

 var testElement = document.createElement("div");
 var testClassName = "   foo   \t    bar     baz      foo-1    foo-bar    42     "; /* dirty class string :) */

 testElement.className = testClassName;
 /* remove class named 'baz', just all the removeClass functions does */
 removeClass(testElement, 'baz')
 document.getElementById("ret").innerHTML = testElement.className

 testElement.className = testClassName;
 /* remove all classes matches to regexp */
 /* (strips 'foo' and 'foo-1', but leaves 'foo-bar' ) */
 removeClass(testElement, /foo(-\d+)?/)
 document.getElementById("ret2").innerHTML = testElement.className

 testElement.className = testClassName;
 /* coercion test */
 removeClass(testElement, 42)
 document.getElementById("ret3").innerHTML = testElement.className

 </script>
	function(
	a, /* (DOM element) object */
	b, /* (string \| regexp) class name */
	c, /* - placeholder */
	d, /* - placeholder */
	e /* - placeholder */
	){
	/* For each class chunk: */
	for (
	/* First, create new RegExp: any amount of anything except whitespaces */
	c = /\S+/g
	;
	/* then get className chunks from the className until exec() is exhausted and returns null */

	/* Thanks to @tsaniel for getting rid of array and saving a lot of extra bytes! */

	d = c.exec(a.className)
	;
	/* {{ empty counting expression }} */
	)
	d == (
	/* If b is regexp ... */
	/* (bypass: if b is undefined, TypeError is raised here) */
	b.exec ?
	/* ... apply this regexp to class name chunk, */
	/* test if is an array (not null), */
	/* and get the 0th item (whole captured string) */

	/* Thanks to @atk for great reduce and speed-up hint! */

	(b.exec(d)\|\|0)[0]
	/* pass this string to comparsion. */
	:
	/* If b is not regexp, just pass it to comparsion as is */
	b
	)
	/* So we have compared the class name chunk and a mask. If regexp is matched not fully, this comparsion will fail */
	/* If string or regexp matches ... */
	?
	/* Do nothing, this class chunk must be removed */
	0
	:
	/* Else we need to append it to the resulting string */
	e = e ? /* If e is "truthy", that is, not empty string and not undefined... */
	/* append d to e */
	e + ' ' + d
	/* e is "" or undefined ? */
	:
	/* let just `e` be `d` */
	d
	;
	/* {{ end of for loop }} */
	/* Finally, assign a new value to className */
	/* Assigning to property will trigger .toString() on array */
	/* If `e` is undefined, `[e]` returns an empty string */
	a.className = [e];
	}
	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 subzey <[email protected]>

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

	0. You just DO WHAT THE FUCK YOU WANT TO.
	{
	"name": "removeClassRegexp",

	"description": "Regular expression capable removeClass",

	"keywords": [
	"removeClass",
	"remove",
	"class",
	"regexp"
	]
	}
	<!DOCTYPE html>
	<title>removeClass</title>
	<div>Expected value: <pre><b>foo bar foo-1 foo-bar 42</b><br /><b>bar baz foo-bar 42</b><br /><b>foo bar baz foo-1 foo-bar</b></pre></div>
	<div>Actual value: <pre><b id="ret"></b><br /><b id="ret2"></b><br /><b id="ret3"></b></pre></div>
	<script>
	var removeClass = function(a,b,c,d,e){for(c=/\S+/g;d=c.exec(a.className);)d==(b.exec?(b.exec(d)\|\|0)[0]:b)?0:e=e?e+' '+d:d;a.className=[e]}

	var testElement = document.createElement("div");
	var testClassName = " foo \t bar baz foo-1 foo-bar 42 "; /* dirty class string :) */

	testElement.className = testClassName;
	/* remove class named 'baz', just all the removeClass functions does */
	removeClass(testElement, 'baz')
	document.getElementById("ret").innerHTML = testElement.className

	testElement.className = testClassName;
	/* remove all classes matches to regexp */
	/* (strips 'foo' and 'foo-1', but leaves 'foo-bar' ) */
	removeClass(testElement, /foo(-\d+)?/)
	document.getElementById("ret2").innerHTML = testElement.className

	testElement.className = testClassName;
	/* coercion test */
	removeClass(testElement, 42)
	document.getElementById("ret3").innerHTML = testElement.className

	</script>