模拟数组pop,push,toString和冒泡排序（sort的使用）

图片展示

代码展示

<script>
       //创建一个对象
       function MaArray(){
            this.length=arguments.length;
            for(var i=0;i<arguments.length;i++){
                this[i]=arguments[i];
            }
            //插入
            this.push=function(s){
                this[this.length]=s;
                this.length++;
                return this.length;
            }
            this.pop=function(){
                var popdata=this[this.length-1];
                delete this[this.length-1];
                this.length--;

                return popdata;
            }
            this.toString=function(){
                var result="";
                var j=',';
                for(var j=0;j<this.length-1;j++){
                    result+=this[j];
                    result+=j;
                }
                result+=this[j];
                return result;
            }
            //最大值
            this.max = function () {
                var max = this[0];
                for (var i = 1; i < this.length; i++) {
                    if (this[i] > max) {
                        max = this[i];
                    }
                }
                return max;
            }
            //最小值
            this.min = function () {
                var min = this[0];
                for (var i = 1; i < this.length; i++) {
                    if (this[i] < min) {
                        min = this[i]
                    }
                }
                return min;
            }
            this.sort=function(){
                //定义x用于替换
                var x=0;
                //外层循环，控制趟数，每一次找到一个最大值
                for(var i=0;i<this.length-1;i++){
                    // 内层循环,控制比较的次数，并且判断两个数的大小
                    for(var j=0;j<this.length-1-i;j++){
                        //从小到大的冒泡排序
                        if(this[j]>this[j+1]){
                            x=this[j];
                            this[j]=this[j+1];
                            this[j+1]=x;
                        }
                    }
                }
                return this;
            }
       }
       var arr=new MaArray(11,3,55,88,99,5,'abc');
       console.log(arr);
       console.log(arr.push('cs'));
       console.log(arr.pop());
       console.log(arr.max());
       console.log(arr.min());
       console.log(arr.sort());
    </script>