Implement your own Map object in JavaScript

HashMap plays an irreplaceable and important role in programming. It provides data storage and reading methods such as m.put(key,value); m.get(key);, which is very convenient. But in JavaScript (HTML4.0 version), there is no such object provided. The following code is used to create a Map object. I have used it for many years with good results. It is for reference by friends in need.

1. Map source code

/**  Map is a general map object for storing key value pairs

     *  @param m - default set of properties

    */

var Map =function(m) {

var map;

If (typeof m == 'undefined') map = new Array();

                                                                                          map = m; ();

for (var _i in map){

_keys.push(_i);

}

return _keys;//

                                                                                                                                                                                                                  (key,value) {

                    map[key] = value;

;

                       /**

         * Get a list of the keys to check

        */

This.clear = function() {

Delete map;

map = new Array();

};

}

2. Create Map object

var m=new Map();

m.put("id","1000");

m.put("name","Zhang San");

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