递归

    function quickSort(arr){
        if(arr.length<1){
            return arr;
        }
        var pivotIndex = Math.floor(arr.length/2);
        var pivot=arr.splice(pivotIndex,1)[0];
        var left=[];
        var right=[];
        for(var i=0; iarr[j+1]){
                    var wrap=arr[j+1];
                    arr[j+1]=arr[j];
                    arr[j]=wrap;
                }
            }
        }
        return arr;
    }
    document.write(sort1(arr));

    var scope="glob";
    function A(){
        var scope="local";
        function f(){
            return scope;
        }
        return f;
    }
    console.log(A());