复制代码代码如下：
var map = function（）{
this._entrys = new Array（）;
this.put =函数（键，值）{
if（key == null || key == undefined）{
返回;
}
var index = this._getIndex（key）;
if（index == -1）{
var entry = new Object（）;
entry.key = key;
entry.value = value;
this._entrys [this._entrys.length] = entry;
}别的{
this._entrys [index] .value = value;
}
};
this.get = function（key）{
var index = this._getIndex（key）;
返回（index！= -1）？ this._entrys [index] .value：null;
};
this.remove = function（key）{
var index = this._getIndex（key）;
如果（index！= -1）{
this._entrys.splice（index，1）;
}
};
this.clear = function（）{
this._entrys.length = 0 ;;
};
this.contains = function（key）{
var index = this._getIndex（key）;
返回（index！= -1）？ true：false;
};
this.getCount = function（）{
返回this._entrys.length;
};
this.getEntrys = function（）{
返回this._entrys;
};
this._getIndex = function（key）{
if（key == null || key == undefined）{
返回-1;
}
var _length = this._entrys.length;
for（var i = 0; i <_length; i ++）{
var entry = this._entrys [i];
if（entry == null || entry == undefined）{
继续;
}
if（entry.key ===键）{//等于
返回我；
}
}
返回-1;
};
this._tostring = function（）{
var string =“”;
for（var i = 0; i <this.getEntrys（）。长度; i ++）{
string+= this.getEntrys（）[i] .key+“ ::”+this.getEntrys（）[i] .value;
if（i！= this.getEntrys（）。长度-1）{
字符串 +=“;”;
}
}
返回字符串;
};
};