<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>JS对象模拟数组</title></head><body><script>function MyArray() {this.length = arguments.length;for(var i=0; i<arguments.length; i++) {this[i] = arguments[i];}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 i = 0; i<this.length-1; i++){result += this[i];result += j;}result += this[i];return result;}this.sort = function sort(arr, flag=true) {for(var i=0; i<arr.length-1; i++) {for (var j = 0; j < arr.length-i-1; j++) {if(flag) {var swap = arr[j]if (arr[j] > arr[j + 1]) {arr[j] = arr[j + 1];arr[j + 1] = swap;}}else{if (arr[j] < arr[j + 1]) {arr[j] = arr[j + 1];arr[j + 1] = swap;}}}}return arr;}this.max = function arrmax(arr) {var max = arr[0];for(var i=0; i<arr.length; i++) {if(arr[i]>max)max=arr[i];}return max;}this.min = function arrmin(arr) {var min = arr[0];for(var i=0; i<arr.length; i++) {if(arr[i]<min)min=arr[i];}return min;}this.reverse = function() {var result = [];for(var i = 0; i < this.length; i++) {result[result.length] = this[this.length - i - 1];}for(var i = 0; i < result.length; i++) {this[i] = result[i];}return this;}}var arr = new MyArray(1,4,9,3,7)console.log(arr.push("hello"))console.log(arr.push("world"))console.log(arr.toString())console.log(arr.pop())console.log(arr.pop())console.log(arr.sort(arr,true))console.log(arr.max(arr))console.log(arr.min(arr))console.log(arr.reverse())</script></body></html>
数组对象的push与pop方法分别在数组的尾部添加与删除元素。sort() 方法用于对数组的元素进行排序。max()、min()取数组参数中的最大值、最小值
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