JS1k: The JavaScript code golfing competition

// JavaScript Syntax Highlighting & Quine
b=document.body
e=b.children
c=e[1].text
b.innerHTML='<textarea rows=10 cols=80></textarea><br><button onclick=h()>Highlight</button><pre/>'
e[0].value=c
x=[
	/&/g,'&amp;',
	/</g,'&lt;',
	/>/g,'&gt;',
	/\\./g,function(m){return 'r'+p.push(m)+'>'},
	/([\[({=:+,]\s*)\/(?![\/\*])/g,'$1<h/',
	/(\/\*[\s|\S]*?\*\/|\/\/.*)|(<h\/.+?\/\w*)|".*?"|'.*?'/g,function(m,c,x){return 'r'+p.push(s(c?'666':x?'6a0':'719',m))+'>'},
	/((&\w+;|[-\/+*=?:.,;()\[\]{}|%^!])+)/g,s('17b'),
	/\b(break|case|catch|continue|default|delete|do|else|false|finally|for|function|if|in|instanceof|new|return|switch|this|throw|true|try|typeof|var|void|while|with)\b/gi,s('f0b'),
	/\b(0x[\da-f]+|\d+)\b/g,s('d83'),
	/r(\d+)>/g,function(m,n){return p[n-1].replace(x[18],x[19])},
	/<h/g,''
]
function s(c,r){
	return '<span style=color:#'+c+'>'+(r||'$1')+'</span>'
}
function h(){
	p=[]
	v=e[0].value
	for(i=0;i<22;)
		v=v.replace(x[i++],x[i++])
	e[3].innerHTML=v
}
h()

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