JSON object to array using each.

JSON object to array using each.

I have  array of json object stored in ItemsList variable like this : 

ItemsList=[ { ItemID:"1", ItemName: "abc" }, { ItemID: "2", ItemName: "dg" }, { ItemID:"3", ItemName:  "erte"} ];

how do I push them into the array variable with key and value using each function. 

I tried this : 
  1. var arr= new Array();
  2. $.each( ItemsList, function(key, obj){
  3.                     $.each(obj,function(k,value){
  4.                         arr.push(k,value)
  5.                     });
  6.                 });
Does not give me the output I want.