function Map() {
var struct = function(key, value) {
this.key = key
this.value = value
}
var put = function(key, value){
for (var i = 0i <this.arr.lengthi++) {
if ( this.arr[i].key === key ) {
this.arr[i].value = value
return
}
}
this.arr[this.arr.length] = new struct(key, value)
}
var get = function(key) {
for (var i = 0i <this.arr.lengthi++) {
if ( this.arr[i].key === key ) {
return this.arr[i].value
}
}
return null
}
var remove = function(key) {
var v
for (var i = 0i <this.arr.lengthi++) {
v = this.arr.pop()
if ( v.key === key ) {
continue
}
this.arr.unshift(v)
}
}
var size = function() {
return this.arr.length
}
var isEmpty = function() {
return this.arr.length <= 0
}
this.arr = new Array()
this.get = get
this.put = put
this.remove = remove
this.size = size
this.isEmpty = isEmpty
}
var map = new HashMap()map.put("a","1")
map.put("b","2")
遍历：
var key = map.keySet()
for (var i in key){
alert(map.get(key[i]))
｝
注：js 中使用map，要先导入一个HashMap.js文件
没要求，引入这个文件之后，可以直接使用hashmap了
有(HashTable）。
用JS实现的数据结构，可在js的项目(前端或nodejs后端)中使用。
具体看可以看npm上的介绍，或github源码。
还有其它常用数据结构，
Stack
Queue
PriorityQueue
LinkedList
DoublyLinkedList
CircleLinkedList
HashTalbe
BinarySearchTree
RedBlackTree
UndirectedGraph
DirectedGraph
---
NPM 包：data-struct-js
>npm install data-struct-js
