调用ajax在给后台传参数的时候，如何把2个json合并成一个json:这里用到 $.extend()方法
此处引用jQuery库，请记得先加载jquery
<script type="text/javascript">
var a ={"a":"1","b":"2"}
var b ={"c":"3","d":"4","e":"5"}
var c = $.extend({}, a,b);
console.log(c);//输出结果，{"a":"1","b":"2","c":"3","d":"4","e":"5"}
</script>
