js中Map的key为一个变量

js中，Map的key为一个变量，此时可以通过map[变量]来获取对应的值。
 
var mapList = [{key=111,value=abc},{key=222,value=def}]
var otherMapList = [{111=abc111},{222=def222}]
for(var i in otherMapList){

for(var m in mapList){

      var mapKey= mapList[m].key;
var value = otherMapList[i][mapKey];

       console.info(value);

     }
}