nodejs的小demo

参考网站:http://zhuanlan.zhihu.com/FrontendMagazine/19750470

nodejs demo:

var fs = require('fs');
var path = require('path');

function readDir (dir,cb){
	fs.readdir(dir, function(err,files){
		if(err) return cb(err);
		var count = files.length;
		var stats = [];
		files.forEach(function(file,index){
			fs.stat(path.join(dir,file), function(err,stat){
				stat['path'] = path.join(dir,file);
				stats[index] = stat;
				if (--count == 0) {
		          var largest = stats
		            .filter(function (stat) { return stat.isFile() })
		            .reduce(function (prev, next) {
		              if (prev.size > next.size) return prev
		              return next
		            });
		            console.log(files[stats.indexOf(largest)]);
		        }
			});
		});
	});
}

readDir('D:\\Program Files\\nodejs',function(err,response){
	//TODO
});