JS 實現Map

JS 實現Map

function Map() {this.arr = new Array();var struct = function(key, value) {this.key = key;this.value = value;    };this.put = function(key, value){      for (var i = 0; i < this.arr.length; i++) {          if ( this.arr[i].key === key ) {          this.arr[i].value = value;          return;           }      }   this.arr[this.arr.length] = new struct(key, value);};this.get = function(key) {   for (var i = 0; i < this.arr.length; i++) {      if ( this.arr[i].key === key ) {           return this.arr[i].value;  } }  return null; }; this.values=function(){    var value=[]   for (var i = 0; i < this.arr.length; i++) {      value.push(this.arr[i].value);   }   return value.join(","); }; this.remove = function(key) {   var v;   for (var i = 0; i < this.arr.length; i++) {      v = this.arr.pop();      if ( v.key === key ) {       continue;   }   this.arr.unshift(v);  } }; this.size = function() {  return this.arr.length; }; this.isEmpty = function() {     return this.arr.length <= 0; };}var map = new Map();map.put("a","aaaaaaaaaaaaaaa");map.put("b","bbbbbbbbbbb");map.put("c","cccccccccccccc");map.remove("b");console.info(map.values());