JS实现合并json对象的方法

var a ={"a":"1","b":"2"}
var b ={"c":"3","d":"4","e":"5"}

var c ={"a":"1","b":"2","c":"3","d":"4","e":"5"}

<script>
function extend(des, src, override){
  if(src instanceof Array){
    for(var i = 0, len = src.length; i < len; i++)
       extend(des, src[i], override);
  }
  for( var i in src){
    if(override || !(i in des)){
      des[i] = src[i];
    }
  }
  return des;
}
var a ={"a":"1","b":"2"}
var b ={"c":"3","d":"4","e":"5"}
var c = extend({}, [a,b]);
console.log(c);
</script>