A complete instance _javascript technique of Map Collection tool class implemented by JavaScript

This example describes the Map collection tool class for JavaScript implementations. Share to everyone for your reference. as follows:

var Map = function () {//construct Entry entity var Entry = function (key, value) {This.key = key;
  This.value = value;
  } this.entries = new Array (); Constructs the put method to place a entry This.put = function (key, value) {//array in the array does not put in for (var i = 0; i < this.size (); i++)
      {if (This.entries[i].key = = key) {return false;
  } this.entries.push (New Entry (key, value));
  }; Simulate Get method This.get = function (key) {for (var i = 0; i < this.size (); i++) {if (This.entries[i].key = = Ke
      Y) {return this.entries[i].value;
  } return null;
  };
    Lookup Subscript Value This.indexof = function (key) {var index =-1;
        for (var i = 0; i < this.size (); i++) {if (This.entries[i].key = = key) {index = i;
      Break
  } return index;
    //Delete an element this.remove = function (key) {var index = this.indexof (key);
    if (index!=-1) {This.entries.splice (index, 1); }//Get map length This.siZe = function () {return this.entries.length;
  };
    Reset key value to This.setvalue = function (key, value) {var index = this.indexof (key);
    if (index!=-1) {this.entries[i].value = value;
  };
  };
  is an empty map this.isempty = function () {return this.size () <= 0;
  };
  Empty map;
  This.clear = function () {this.entries = [];
  }; Get entry Entity This.getentry = function (index) {if (index >= 0 && Index < this.size ()) {return th
    Is.entries[index];
  return null;
    } this.tostring = function () {var str = ' [';
    for (var i = 0; i < this.size (); i++) {str + + this.getentry (i). Key + "=" + this.getentry (i). Value + ",";
    }//Remove the Last "," str = str.substring (0, str.length-1);
    str = + "]";
  return str;
};

 }

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