zhangqi
/
shuiwu


			
				
					
						
						
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							<!DOCTYPE html>
<html>
<head>
<script src="naturalSort.js" type="text/javascript"></script>

<script>

/* Mike Grier's fixes on v0.2 http://mgrier.com/code/natsort.optimized.txt */
function naturalSort2(a,b){
	// setup temp-scope variables for comparison evauluation
	var x = a.toString().toLowerCase() || '',
	re=/(-?[0-9.]+)/g,
	y = b.toString().toLowerCase() || '',
	nC = String.fromCharCode(0),
	xN = x.replace( re, nC + '$1' + nC ).split(nC),
	yN = y.replace( re, nC + '$1' + nC ).split(nC),
	xD = (new Date(x)).getTime(),yD;

	if(xD) yD = (new Date(y)).getTime(); //no point in getting yD if xD is not a date

	// natural sorting of dates
	if(yD){ // we already checked if(xD), so if(yD), it's a date, too
		if( xD < yD ) return -1;
		else if( xD > yD ) return 1;
	}

	// natural sorting through split numeric strings and default strings
	var cLoc, numS=Math.max(xN.length,yN.length);
	for(cLoc=0; cLoc<numS; cLoc++){
		// instead of performing these next 6 operations in the if
		// and the same 6 operations in the else if, just do them once
		// so we can reuse results instead of computing twice
		xNcL = xN[cLoc]; // only look up values
		yNcL = yN[cLoc]; // in arrays once
		FxNcL = parseFloat(xNcL);
		FyNcL = parseFloat(yNcL);
		oFxNcL = FxNcL || xNcL;
		oFyNcL = FyNcL || yNcL;

		if(oFxNcL < oFyNcL)return -1;
		else if(oFxNcL > oFyNcL)return 1;
	}
	return 0;
}

/*
 * Natural Sort algorithm for Javascript
 *	Version 0.3
 * Author: Jim Palmer (based on chunking idea from Dave Koelle)
 *	optimizations and safari fix by Mike Grier (mgrier.com)
 * Released under MIT license.
 */
function naturalSort3(a, b){
	// setup temp-scope variables for comparison evauluation
	var re = /(-?[0-9\.]+)/g,
		x = a.toString().toLowerCase() || '',
		y = b.toString().toLowerCase() || '',
		nC = String.fromCharCode(0),
		xN = x.replace( re, nC + '$1' + nC ).split(nC),
		yN = y.replace( re, nC + '$1' + nC ).split(nC),
		xD = (new Date(x)).getTime(),
		yD = xD ? (new Date(y)).getTime() : null;
	// natural sorting of dates
	if ( yD )
		if ( xD < yD ) return -1;
		else if ( xD > yD )	return 1;
	// natural sorting through split numeric strings and default strings
	for( var cLoc = 0, numS = Math.max(xN.length, yN.length); cLoc < numS; cLoc++ ) {
		oFxNcL = parseFloat(xN[cLoc]) || xN[cLoc];
		oFyNcL = parseFloat(yN[cLoc]) || yN[cLoc];
		if (oFxNcL < oFyNcL) return -1;
		else if (oFxNcL > oFyNcL) return 1;
	}
	return 0;
}

var a = [], b = [], c = [];
for ( var i = 0; i < 1000; i++ ) {
	a.push(String.fromCharCode( Math.floor(Math.random() * (90-66)) + 65, Math.floor(Math.random() * (90-66)) + 65, Math.floor(Math.random() * (90-66)) + 65 ));
	b.push(String.fromCharCode( Math.floor(Math.random() * (90-66)) + 65, Math.floor(Math.random() * (90-66)) + 65, Math.floor(Math.random() * (90-66)) + 65 ));
	c.push(String.fromCharCode( Math.floor(Math.random() * (90-66)) + 65, Math.floor(Math.random() * (90-66)) + 65, Math.floor(Math.random() * (90-66)) + 65 ));
}
for ( i = 0; i < 1000; i++ ) {
	a.push(Math.floor(Math.random() * 9).toString() + Math.floor(Math.random() * 9).toString() + Math.floor(Math.random() * 9).toString() );
	b.push(Math.floor(Math.random() * 9).toString() + Math.floor(Math.random() * 9).toString() + Math.floor(Math.random() * 9).toString() );
	c.push(Math.floor(Math.random() * 9).toString() + Math.floor(Math.random() * 9).toString() + Math.floor(Math.random() * 9).toString() );
}
for ( i = 0; i < 1000; i++ ) {
	a.push( (Math.floor(Math.random() * 12) + 1).toString() + '/' + (Math.floor(Math.random() * 28) + 1).toString() + '/' + ( 2009 - Math.floor(Math.random() * 2)) );
	b.push( (Math.floor(Math.random() * 12) + 1).toString() + '/' + (Math.floor(Math.random() * 28) + 1).toString() + '/' + ( 2009 - Math.floor(Math.random() * 2)) );
	c.push( (Math.floor(Math.random() * 12) + 1).toString() + '/' + (Math.floor(Math.random() * 28) + 1).toString() + '/' + ( 2009 - Math.floor(Math.random() * 2)) );
}

var d = new Date();
document.write(a.sort(naturalSort)[0] + ' <BR>[' + ((new Date()).getTime() - d.getTime()) + 'ms]<BR><BR>');
//d = new Date();
//document.write(b.sort(naturalSort2)[0] + ' <BR>[' + ((new Date()).getTime() - d.getTime()) + 'ms]<BR><BR>');
//d = new Date();
//document.write(c.sort(naturalSort3)[0] + ' <BR>[' + ((new Date()).getTime() - d.getTime()) + 'ms]');

</script>
<style>*{font-family:tahoma;font-size:9px;}</style>
</head>
<body></body>
</html>