var arr = [2,4,1,5,3];function handle(arr){	for(var i=0;i<arr.length-1;i++){		for(var j=0;j<arr.length-1-i;j++){			if(arr[j]>arr[j+1]){				var tmp=arr[j];				arr[j] = arr[j+1];				arr[j+1] = tmp;			}		}	}	return arr;}var res = handle(arr);alert(res);